dump.c

   1 /*    dump.c
   2  *
   3  *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   4  *    2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
   5  *
   6  *    You may distribute under the terms of either the GNU General Public
   7  *    License or the Artistic License, as specified in the README file.
   8  *
   9  */
  10
  11 /*
  12  *  'You have talked long in your sleep, Frodo,' said Gandalf gently, 'and
  13  *   it has not been hard for me to read your mind and memory.'
  14  *
  15  *     [p.220 of _The Lord of the Rings_, II/i: "Many Meetings"]
  16  */
  17
  18 /* This file contains utility routines to dump the contents of SV and OP
  19  * structures, as used by command-line options like -Dt and -Dx, and
  20  * by Devel::Peek.
  21  *
  22  * It also holds the debugging version of the  runops function.
  23  */
  24
  25 #include "EXTERN.h"
  26 #define PERL_IN_DUMP_C
  27 #include "perl.h"
  28 #include "regcomp.h"
  29
  30
  31 static const char* const svtypenames[SVt_LAST] = {
  32     "NULL",
  33     "BIND",
  34     "IV",
  35     "NV",
  36     "PV",
  37     "PVIV",
  38     "PVNV",
  39     "PVMG",
  40     "REGEXP",
  41     "PVGV",
  42     "PVLV",
  43     "PVAV",
  44     "PVHV",
  45     "PVCV",
  46     "PVFM",
  47     "PVIO"
  48 };
  49
  50
  51 static const char* const svshorttypenames[SVt_LAST] = {
  52     "UNDEF",
  53     "BIND",
  54     "IV",
  55     "NV",
  56     "PV",
  57     "PVIV",
  58     "PVNV",
  59     "PVMG",
  60     "REGEXP",
  61     "GV",
  62     "PVLV",
  63     "AV",
  64     "HV",
  65     "CV",
  66     "FM",
  67     "IO"
  68 };
  69
  70 struct flag_to_name {
  71     U32 flag;
  72     const char *name;
  73 };
  74
  75 static void
  76 S_append_flags(pTHX_ SV *sv, U32 flags, const struct flag_to_name *start,
  77                const struct flag_to_name *const end)
  78 {
  79     do {
  80         if (flags & start->flag)
  81             sv_catpv(sv, start->name);
  82     } while (++start < end);
  83 }
  84
  85 #define append_flags(sv, f, flags) \
  86     S_append_flags(aTHX_ (sv), (f), (flags), C_ARRAY_END(flags))
  87
  88
  89
  90 void
  91 Perl_dump_indent(pTHX_ I32 level, PerlIO *file, const char* pat, ...)
  92 {
  93     va_list args;
  94     PERL_ARGS_ASSERT_DUMP_INDENT;
  95     va_start(args, pat);
  96     dump_vindent(level, file, pat, &args);
  97     va_end(args);
  98 }
  99
 100 void
 101 Perl_dump_vindent(pTHX_ I32 level, PerlIO *file, const char* pat, va_list *args)
 102 {
 103     dVAR;
 104     PERL_ARGS_ASSERT_DUMP_VINDENT;
 105     PerlIO_printf(file, "%*s", (int)(level*PL_dumpindent), "");
 106     PerlIO_vprintf(file, pat, *args);
 107 }
 108
 109 void
 110 Perl_dump_all(pTHX)
 111 {
 112     dump_all_perl(FALSE);
 113 }
 114
 115 void
 116 Perl_dump_all_perl(pTHX_ bool justperl)
 117 {
 118
 119     dVAR;
 120     PerlIO_setlinebuf(Perl_debug_log);
 121     if (PL_main_root)
 122         op_dump(PL_main_root);
 123     dump_packsubs_perl(PL_defstash, justperl);
 124 }
 125
 126 void
 127 Perl_dump_packsubs(pTHX_ const HV *stash)
 128 {
 129     PERL_ARGS_ASSERT_DUMP_PACKSUBS;
 130     dump_packsubs_perl(stash, FALSE);
 131 }
 132
 133 void
 134 Perl_dump_packsubs_perl(pTHX_ const HV *stash, bool justperl)
 135 {
 136     dVAR;
 137     I32 i;
 138
 139     PERL_ARGS_ASSERT_DUMP_PACKSUBS_PERL;
 140
 141     if (!HvARRAY(stash))
 142         return;
 143     for (i = 0; i <= (I32) HvMAX(stash); i++) {
 144         const HE *entry;
 145         for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
 146             const GV * const gv = (const GV *)HeVAL(entry);
 147             if (SvTYPE(gv) != SVt_PVGV || !GvGP(gv))
 148                 continue;
 149             if (GvCVu(gv))
 150                 dump_sub_perl(gv, justperl);
 151             if (GvFORM(gv))
 152                 dump_form(gv);
 153             if (HeKEY(entry)[HeKLEN(entry)-1] == ':') {
 154                 const HV * const hv = GvHV(gv);
 155                 if (hv && (hv != PL_defstash))
 156                     dump_packsubs_perl(hv, justperl); /* nested package */
 157             }
 158         }
 159     }
 160 }
 161
 162 void
 163 Perl_dump_sub(pTHX_ const GV *gv)
 164 {
 165     PERL_ARGS_ASSERT_DUMP_SUB;
 166     dump_sub_perl(gv, FALSE);
 167 }
 168
 169 void
 170 Perl_dump_sub_perl(pTHX_ const GV *gv, bool justperl)
 171 {
 172     SV * sv;
 173
 174     PERL_ARGS_ASSERT_DUMP_SUB_PERL;
 175
 176     if (justperl && (CvISXSUB(GvCV(gv)) || !CvROOT(GvCV(gv))))
 177         return;
 178
 179     sv = sv_newmortal();
 180     gv_fullname3(sv, gv, NULL);
 181     Perl_dump_indent(aTHX_ 0, Perl_debug_log, "\nSUB %s = ", SvPVX_const(sv));
 182     if (CvISXSUB(GvCV(gv)))
 183         Perl_dump_indent(aTHX_ 0, Perl_debug_log, "(xsub 0x%"UVxf" %d)\n",
 184             PTR2UV(CvXSUB(GvCV(gv))),
 185             (int)CvXSUBANY(GvCV(gv)).any_i32);
 186     else if (CvROOT(GvCV(gv)))
 187         op_dump(CvROOT(GvCV(gv)));
 188     else
 189         Perl_dump_indent(aTHX_ 0, Perl_debug_log, "<undef>\n");
 190 }
 191
 192 void
 193 Perl_dump_form(pTHX_ const GV *gv)
 194 {
 195     SV * const sv = sv_newmortal();
 196
 197     PERL_ARGS_ASSERT_DUMP_FORM;
 198
 199     gv_fullname3(sv, gv, NULL);
 200     Perl_dump_indent(aTHX_ 0, Perl_debug_log, "\nFORMAT %s = ", SvPVX_const(sv));
 201     if (CvROOT(GvFORM(gv)))
 202         op_dump(CvROOT(GvFORM(gv)));
 203     else
 204         Perl_dump_indent(aTHX_ 0, Perl_debug_log, "<undef>\n");
 205 }
 206
 207 void
 208 Perl_dump_eval(pTHX)
 209 {
 210     dVAR;
 211     op_dump(PL_eval_root);
 212 }
 213
 214
 215 /*
 216 =for apidoc pv_escape
 217
 218 Escapes at most the first "count" chars of pv and puts the results into
 219 dsv such that the size of the escaped string will not exceed "max" chars
 220 and will not contain any incomplete escape sequences.
 221
 222 If flags contains PERL_PV_ESCAPE_QUOTE then any double quotes in the string
 223 will also be escaped.
 224
 225 Normally the SV will be cleared before the escaped string is prepared,
 226 but when PERL_PV_ESCAPE_NOCLEAR is set this will not occur.
 227
 228 If PERL_PV_ESCAPE_UNI is set then the input string is treated as Unicode,
 229 if PERL_PV_ESCAPE_UNI_DETECT is set then the input string is scanned
 230 using C<is_utf8_string()> to determine if it is Unicode.
 231
 232 If PERL_PV_ESCAPE_ALL is set then all input chars will be output
 233 using C<\x01F1> style escapes, otherwise if PERL_PV_ESCAPE_NONASCII is set, only
 234 chars above 127 will be escaped using this style; otherwise, only chars above
 235 255 will be so escaped; other non printable chars will use octal or
 236 common escaped patterns like C<\n>. Otherwise, if PERL_PV_ESCAPE_NOBACKSLASH
 237 then all chars below 255 will be treated as printable and
 238 will be output as literals.
 239
 240 If PERL_PV_ESCAPE_FIRSTCHAR is set then only the first char of the
 241 string will be escaped, regardless of max. If the output is to be in hex,
 242 then it will be returned as a plain hex
 243 sequence. Thus the output will either be a single char,
 244 an octal escape sequence, a special escape like C<\n> or a hex value.
 245
 246 If PERL_PV_ESCAPE_RE is set then the escape char used will be a '%' and
 247 not a '\\'. This is because regexes very often contain backslashed
 248 sequences, whereas '%' is not a particularly common character in patterns.
 249
 250 Returns a pointer to the escaped text as held by dsv.
 251
 252 =cut
 253 */
 254 #define PV_ESCAPE_OCTBUFSIZE 32
 255
 256 char *
 257 Perl_pv_escape( pTHX_ SV *dsv, char const * const str,
 258                 const STRLEN count, const STRLEN max,
 259                 STRLEN * const escaped, const U32 flags )
 260 {
 261     const char esc = (flags & PERL_PV_ESCAPE_RE) ? '%' : '\\';
 262     const char dq = (flags & PERL_PV_ESCAPE_QUOTE) ? '"' : esc;
 263     char octbuf[PV_ESCAPE_OCTBUFSIZE] = "%123456789ABCDF";
 264     STRLEN wrote = 0;    /* chars written so far */
 265     STRLEN chsize = 0;   /* size of data to be written */
 266     STRLEN readsize = 1; /* size of data just read */
 267     bool isuni= flags & PERL_PV_ESCAPE_UNI ? 1 : 0; /* is this Unicode */
 268     const char *pv  = str;
 269     const char * const end = pv + count; /* end of string */
 270     octbuf[0] = esc;
 271
 272     PERL_ARGS_ASSERT_PV_ESCAPE;
 273
 274     if (!(flags & PERL_PV_ESCAPE_NOCLEAR)) {
 275             /* This won't alter the UTF-8 flag */
 276             sv_setpvs(dsv, "");
 277     }
 278
 279     if ((flags & PERL_PV_ESCAPE_UNI_DETECT) && is_utf8_string((U8*)pv, count))
 280         isuni = 1;
 281
 282     for ( ; (pv < end && (!max || (wrote < max))) ; pv += readsize ) {
 283         const UV u= (isuni) ? utf8_to_uvchr_buf((U8*)pv, (U8*) end, &readsize) : (U8)*pv;
 284         const U8 c = (U8)u & 0xFF;
 285
 286         if ( ( u > 255 )
 287           || (flags & PERL_PV_ESCAPE_ALL)
 288           || (( u > 127 ) && (flags & PERL_PV_ESCAPE_NONASCII)))
 289         {
 290             if (flags & PERL_PV_ESCAPE_FIRSTCHAR)
 291                 chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
 292                                       "%"UVxf, u);
 293             else
 294                 chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
 295                                       "%cx{%"UVxf"}", esc, u);
 296         } else if (flags & PERL_PV_ESCAPE_NOBACKSLASH) {
 297             chsize = 1;
 298         } else {
 299             if ( (c == dq) || (c == esc) || !isPRINT(c) ) {
 300                 chsize = 2;
 301                 switch (c) {
 302
 303                 case '\\' : /* fallthrough */
 304                 case '%'  : if ( c == esc )  {
 305                                 octbuf[1] = esc;
 306                             } else {
 307                                 chsize = 1;
 308                             }
 309                             break;
 310                 case '\v' : octbuf[1] = 'v';  break;
 311                 case '\t' : octbuf[1] = 't';  break;
 312                 case '\r' : octbuf[1] = 'r';  break;
 313                 case '\n' : octbuf[1] = 'n';  break;
 314                 case '\f' : octbuf[1] = 'f';  break;
 315                 case '"'  :
 316                         if ( dq == '"' )
 317                                 octbuf[1] = '"';
 318                         else
 319                             chsize = 1;
 320                         break;
 321                 default:
 322                         if ( (pv+readsize < end) && isDIGIT((U8)*(pv+readsize)) )
 323                             chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
 324                                                   "%c%03o", esc, c);
 325                         else
 326                             chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
 327                                                   "%c%o", esc, c);
 328                 }
 329             } else {
 330                 chsize = 1;
 331             }
 332         }
 333         if ( max && (wrote + chsize > max) ) {
 334             break;
 335         } else if (chsize > 1) {
 336             sv_catpvn(dsv, octbuf, chsize);
 337             wrote += chsize;
 338         } else {
 339             /* If PERL_PV_ESCAPE_NOBACKSLASH is set then bytes in the range
 340                128-255 can be appended raw to the dsv. If dsv happens to be
 341                UTF-8 then we need catpvf to upgrade them for us.
 342                Or add a new API call sv_catpvc(). Think about that name, and
 343                how to keep it clear that it's unlike the s of catpvs, which is
 344                really an array octets, not a string.  */
 345             Perl_sv_catpvf( aTHX_ dsv, "%c", c);
 346             wrote++;
 347         }
 348         if ( flags & PERL_PV_ESCAPE_FIRSTCHAR )
 349             break;
 350     }
 351     if (escaped != NULL)
 352         *escaped= pv - str;
 353     return SvPVX(dsv);
 354 }
 355 /*
 356 =for apidoc pv_pretty
 357
 358 Converts a string into something presentable, handling escaping via
 359 pv_escape() and supporting quoting and ellipses.
 360
 361 If the PERL_PV_PRETTY_QUOTE flag is set then the result will be
 362 double quoted with any double quotes in the string escaped. Otherwise
 363 if the PERL_PV_PRETTY_LTGT flag is set then the result be wrapped in
 364 angle brackets.
 365
 366 If the PERL_PV_PRETTY_ELLIPSES flag is set and not all characters in
 367 string were output then an ellipsis C<...> will be appended to the
 368 string. Note that this happens AFTER it has been quoted.
 369
 370 If start_color is non-null then it will be inserted after the opening
 371 quote (if there is one) but before the escaped text. If end_color
 372 is non-null then it will be inserted after the escaped text but before
 373 any quotes or ellipses.
 374
 375 Returns a pointer to the prettified text as held by dsv.
 376
 377 =cut
 378 */
 379
 380 char *
 381 Perl_pv_pretty( pTHX_ SV *dsv, char const * const str, const STRLEN count,
 382   const STRLEN max, char const * const start_color, char const * const end_color,
 383   const U32 flags )
 384 {
 385     const U8 dq = (flags & PERL_PV_PRETTY_QUOTE) ? '"' : '%';
 386     STRLEN escaped;
 387
 388     PERL_ARGS_ASSERT_PV_PRETTY;
 389
 390     if (!(flags & PERL_PV_PRETTY_NOCLEAR)) {
 391             /* This won't alter the UTF-8 flag */
 392             sv_setpvs(dsv, "");
 393     }
 394
 395     if ( dq == '"' )
 396         sv_catpvs(dsv, "\"");
 397     else if ( flags & PERL_PV_PRETTY_LTGT )
 398         sv_catpvs(dsv, "<");
 399
 400     if ( start_color != NULL )
 401         sv_catpv(dsv, start_color);
 402
 403     pv_escape( dsv, str, count, max, &escaped, flags | PERL_PV_ESCAPE_NOCLEAR );
 404
 405     if ( end_color != NULL )
 406         sv_catpv(dsv, end_color);
 407
 408     if ( dq == '"' )
 409         sv_catpvs( dsv, "\"");
 410     else if ( flags & PERL_PV_PRETTY_LTGT )
 411         sv_catpvs(dsv, ">");
 412
 413     if ( (flags & PERL_PV_PRETTY_ELLIPSES) && ( escaped < count ) )
 414             sv_catpvs(dsv, "...");
 415
 416     return SvPVX(dsv);
 417 }
 418
 419 /*
 420 =for apidoc pv_display
 421
 422 Similar to
 423
 424   pv_escape(dsv,pv,cur,pvlim,PERL_PV_ESCAPE_QUOTE);
 425
 426 except that an additional "\0" will be appended to the string when
 427 len > cur and pv[cur] is "\0".
 428
 429 Note that the final string may be up to 7 chars longer than pvlim.
 430
 431 =cut
 432 */
 433
 434 char *
 435 Perl_pv_display(pTHX_ SV *dsv, const char *pv, STRLEN cur, STRLEN len, STRLEN pvlim)
 436 {
 437     PERL_ARGS_ASSERT_PV_DISPLAY;
 438
 439     pv_pretty( dsv, pv, cur, pvlim, NULL, NULL, PERL_PV_PRETTY_DUMP);
 440     if (len > cur && pv[cur] == '\0')
 441             sv_catpvs( dsv, "\\0");
 442     return SvPVX(dsv);
 443 }
 444
 445 char *
 446 Perl_sv_peek(pTHX_ SV *sv)
 447 {
 448     dVAR;
 449     SV * const t = sv_newmortal();
 450     int unref = 0;
 451     U32 type;
 452
 453     sv_setpvs(t, "");
 454   retry:
 455     if (!sv) {
 456         sv_catpv(t, "VOID");
 457         goto finish;
 458     }
 459     else if (sv == (const SV *)0x55555555 || ((char)SvTYPE(sv)) == 'U') {
 460         /* detect data corruption under memory poisoning */
 461         sv_catpv(t, "WILD");
 462         goto finish;
 463     }
 464     else if (sv == &PL_sv_undef || sv == &PL_sv_no || sv == &PL_sv_yes || sv == &PL_sv_placeholder) {
 465         if (sv == &PL_sv_undef) {
 466             sv_catpv(t, "SV_UNDEF");
 467             if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
 468                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
 469                 SvREADONLY(sv))
 470                 goto finish;
 471         }
 472         else if (sv == &PL_sv_no) {
 473             sv_catpv(t, "SV_NO");
 474             if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
 475                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
 476                 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
 477                                   SVp_POK|SVp_NOK)) &&
 478                 SvCUR(sv) == 0 &&
 479                 SvNVX(sv) == 0.0)
 480                 goto finish;
 481         }
 482         else if (sv == &PL_sv_yes) {
 483             sv_catpv(t, "SV_YES");
 484             if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
 485                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
 486                 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
 487                                   SVp_POK|SVp_NOK)) &&
 488                 SvCUR(sv) == 1 &&
 489                 SvPVX_const(sv) && *SvPVX_const(sv) == '1' &&
 490                 SvNVX(sv) == 1.0)
 491                 goto finish;
 492         }
 493         else {
 494             sv_catpv(t, "SV_PLACEHOLDER");
 495             if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
 496                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
 497                 SvREADONLY(sv))
 498                 goto finish;
 499         }
 500         sv_catpv(t, ":");
 501     }
 502     else if (SvREFCNT(sv) == 0) {
 503         sv_catpv(t, "(");
 504         unref++;
 505     }
 506     else if (DEBUG_R_TEST_) {
 507         int is_tmp = 0;
 508         I32 ix;
 509         /* is this SV on the tmps stack? */
 510         for (ix=PL_tmps_ix; ix>=0; ix--) {
 511             if (PL_tmps_stack[ix] == sv) {
 512                 is_tmp = 1;
 513                 break;
 514             }
 515         }
 516         if (SvREFCNT(sv) > 1)
 517             Perl_sv_catpvf(aTHX_ t, "<%"UVuf"%s>", (UV)SvREFCNT(sv),
 518                     is_tmp ? "T" : "");
 519         else if (is_tmp)
 520             sv_catpv(t, "<T>");
 521     }
 522
 523     if (SvROK(sv)) {
 524         sv_catpv(t, "\\");
 525         if (SvCUR(t) + unref > 10) {
 526             SvCUR_set(t, unref + 3);
 527             *SvEND(t) = '\0';
 528             sv_catpv(t, "...");
 529             goto finish;
 530         }
 531         sv = SvRV(sv);
 532         goto retry;
 533     }
 534     type = SvTYPE(sv);
 535     if (type == SVt_PVCV) {
 536         Perl_sv_catpvf(aTHX_ t, "CV(%s)", CvGV(sv) ? GvNAME(CvGV(sv)) : "");
 537         goto finish;
 538     } else if (type < SVt_LAST) {
 539         sv_catpv(t, svshorttypenames[type]);
 540
 541         if (type == SVt_NULL)
 542             goto finish;
 543     } else {
 544         sv_catpv(t, "FREED");
 545         goto finish;
 546     }
 547
 548     if (SvPOKp(sv)) {
 549         if (!SvPVX_const(sv))
 550             sv_catpv(t, "(null)");
 551         else {
 552             SV * const tmp = newSVpvs("");
 553             sv_catpv(t, "(");
 554             if (SvOOK(sv)) {
 555                 STRLEN delta;
 556                 SvOOK_offset(sv, delta);
 557                 Perl_sv_catpvf(aTHX_ t, "[%s]", pv_display(tmp, SvPVX_const(sv)-delta, delta, 0, 127));
 558             }
 559             Perl_sv_catpvf(aTHX_ t, "%s)", pv_display(tmp, SvPVX_const(sv), SvCUR(sv), SvLEN(sv), 127));
 560             if (SvUTF8(sv))
 561                 Perl_sv_catpvf(aTHX_ t, " [UTF8 \"%s\"]",
 562                                sv_uni_display(tmp, sv, 6 * SvCUR(sv),
 563                                               UNI_DISPLAY_QQ));
 564             SvREFCNT_dec_NN(tmp);
 565         }
 566     }
 567     else if (SvNOKp(sv)) {
 568         STORE_NUMERIC_LOCAL_SET_STANDARD();
 569         Perl_sv_catpvf(aTHX_ t, "(%"NVgf")",SvNVX(sv));
 570         RESTORE_NUMERIC_LOCAL();
 571     }
 572     else if (SvIOKp(sv)) {
 573         if (SvIsUV(sv))
 574             Perl_sv_catpvf(aTHX_ t, "(%"UVuf")", (UV)SvUVX(sv));
 575         else
 576             Perl_sv_catpvf(aTHX_ t, "(%"IVdf")", (IV)SvIVX(sv));
 577     }
 578     else
 579         sv_catpv(t, "()");
 580
 581   finish:
 582     while (unref--)
 583         sv_catpv(t, ")");
 584     if (TAINTING_get && SvTAINTED(sv))
 585         sv_catpv(t, " [tainted]");
 586     return SvPV_nolen(t);
 587 }
 588
 589 void
 590 Perl_do_pmop_dump(pTHX_ I32 level, PerlIO *file, const PMOP *pm)
 591 {
 592     char ch;
 593
 594     PERL_ARGS_ASSERT_DO_PMOP_DUMP;
 595
 596     if (!pm) {
 597         Perl_dump_indent(aTHX_ level, file, "{}\n");
 598         return;
 599     }
 600     Perl_dump_indent(aTHX_ level, file, "{\n");
 601     level++;
 602     if (pm->op_pmflags & PMf_ONCE)
 603         ch = '?';
 604     else
 605         ch = '/';
 606     if (PM_GETRE(pm))
 607         Perl_dump_indent(aTHX_ level, file, "PMf_PRE %c%s%c%s\n",
 608              ch, RX_PRECOMP(PM_GETRE(pm)), ch,
 609              (pm->op_private & OPpRUNTIME) ? " (RUNTIME)" : "");
 610     else
 611         Perl_dump_indent(aTHX_ level, file, "PMf_PRE (RUNTIME)\n");
 612     if (pm->op_type != OP_PUSHRE && pm->op_pmreplrootu.op_pmreplroot) {
 613         Perl_dump_indent(aTHX_ level, file, "PMf_REPL = ");
 614         op_dump(pm->op_pmreplrootu.op_pmreplroot);
 615     }
 616     if (pm->op_code_list) {
 617         if (pm->op_pmflags & PMf_CODELIST_PRIVATE) {
 618             Perl_dump_indent(aTHX_ level, file, "CODE_LIST =\n");
 619             do_op_dump(level, file, pm->op_code_list);
 620         }
 621         else
 622             Perl_dump_indent(aTHX_ level, file, "CODE_LIST = 0x%"UVxf"\n",
 623                                     PTR2UV(pm->op_code_list));
 624     }
 625     if (pm->op_pmflags || (PM_GETRE(pm) && RX_CHECK_SUBSTR(PM_GETRE(pm)))) {
 626         SV * const tmpsv = pm_description(pm);
 627         Perl_dump_indent(aTHX_ level, file, "PMFLAGS = (%s)\n", SvCUR(tmpsv) ? SvPVX_const(tmpsv) + 1 : "");
 628         SvREFCNT_dec_NN(tmpsv);
 629     }
 630
 631     Perl_dump_indent(aTHX_ level-1, file, "}\n");
 632 }
 633
 634 const struct flag_to_name pmflags_flags_names[] = {
 635     {PMf_CONST, ",CONST"},
 636     {PMf_KEEP, ",KEEP"},
 637     {PMf_GLOBAL, ",GLOBAL"},
 638     {PMf_CONTINUE, ",CONTINUE"},
 639     {PMf_RETAINT, ",RETAINT"},
 640     {PMf_EVAL, ",EVAL"},
 641     {PMf_NONDESTRUCT, ",NONDESTRUCT"},
 642     {PMf_HAS_CV, ",HAS_CV"},
 643     {PMf_CODELIST_PRIVATE, ",CODELIST_PRIVATE"},
 644     {PMf_IS_QR, ",IS_QR"}
 645 };
 646
 647 static SV *
 648 S_pm_description(pTHX_ const PMOP *pm)
 649 {
 650     SV * const desc = newSVpvs("");
 651     const REGEXP * const regex = PM_GETRE(pm);
 652     const U32 pmflags = pm->op_pmflags;
 653
 654     PERL_ARGS_ASSERT_PM_DESCRIPTION;
 655
 656     if (pmflags & PMf_ONCE)
 657         sv_catpv(desc, ",ONCE");
 658 #ifdef USE_ITHREADS
 659     if (SvREADONLY(PL_regex_pad[pm->op_pmoffset]))
 660         sv_catpv(desc, ":USED");
 661 #else
 662     if (pmflags & PMf_USED)
 663         sv_catpv(desc, ":USED");
 664 #endif
 665
 666     if (regex) {
 667         if (RX_ISTAINTED(regex))
 668             sv_catpv(desc, ",TAINTED");
 669         if (RX_CHECK_SUBSTR(regex)) {
 670             if (!(RX_EXTFLAGS(regex) & RXf_NOSCAN))
 671                 sv_catpv(desc, ",SCANFIRST");
 672             if (RX_EXTFLAGS(regex) & RXf_CHECK_ALL)
 673                 sv_catpv(desc, ",ALL");
 674         }
 675         if (RX_EXTFLAGS(regex) & RXf_SKIPWHITE)
 676             sv_catpv(desc, ",SKIPWHITE");
 677     }
 678
 679     append_flags(desc, pmflags, pmflags_flags_names);
 680     return desc;
 681 }
 682
 683 void
 684 Perl_pmop_dump(pTHX_ PMOP *pm)
 685 {
 686     do_pmop_dump(0, Perl_debug_log, pm);
 687 }
 688
 689 /* Return a unique integer to represent the address of op o.
 690  * If it already exists in PL_op_sequence, just return it;
 691  * otherwise add it.
 692  *  *** Note that this isn't thread-safe */
 693
 694 STATIC UV
 695 S_sequence_num(pTHX_ const OP *o)
 696 {
 697     dVAR;
 698     SV     *op,
 699           **seq;
 700     const char *key;
 701     STRLEN  len;
 702     if (!o)
 703         return 0;
 704     op = newSVuv(PTR2UV(o));
 705     sv_2mortal(op);
 706     key = SvPV_const(op, len);
 707     if (!PL_op_sequence)
 708         PL_op_sequence = newHV();
 709     seq = hv_fetch(PL_op_sequence, key, len, 0);
 710     if (seq)
 711         return SvUV(*seq);
 712     (void)hv_store(PL_op_sequence, key, len, newSVuv(++PL_op_seq), 0);
 713     return PL_op_seq;
 714 }
 715
 716 const struct flag_to_name op_flags_names[] = {
 717     {OPf_KIDS, ",KIDS"},
 718     {OPf_PARENS, ",PARENS"},
 719     {OPf_REF, ",REF"},
 720     {OPf_MOD, ",MOD"},
 721     {OPf_STACKED, ",STACKED"},
 722     {OPf_SPECIAL, ",SPECIAL"}
 723 };
 724
 725 const struct flag_to_name op_trans_names[] = {
 726     {OPpTRANS_FROM_UTF, ",FROM_UTF"},
 727     {OPpTRANS_TO_UTF, ",TO_UTF"},
 728     {OPpTRANS_IDENTICAL, ",IDENTICAL"},
 729     {OPpTRANS_SQUASH, ",SQUASH"},
 730     {OPpTRANS_COMPLEMENT, ",COMPLEMENT"},
 731     {OPpTRANS_GROWS, ",GROWS"},
 732     {OPpTRANS_DELETE, ",DELETE"}
 733 };
 734
 735 const struct flag_to_name op_entersub_names[] = {
 736     {OPpENTERSUB_DB, ",DB"},
 737     {OPpENTERSUB_HASTARG, ",HASTARG"},
 738     {OPpENTERSUB_AMPER, ",AMPER"},
 739     {OPpENTERSUB_NOPAREN, ",NOPAREN"},
 740     {OPpENTERSUB_INARGS, ",INARGS"}
 741 };
 742
 743 const struct flag_to_name op_const_names[] = {
 744     {OPpCONST_NOVER, ",NOVER"},
 745     {OPpCONST_SHORTCIRCUIT, ",SHORTCIRCUIT"},
 746     {OPpCONST_STRICT, ",STRICT"},
 747     {OPpCONST_ENTERED, ",ENTERED"},
 748     {OPpCONST_FOLDED, ",FOLDED"},
 749     {OPpCONST_BARE, ",BARE"}
 750 };
 751
 752 const struct flag_to_name op_sort_names[] = {
 753     {OPpSORT_NUMERIC, ",NUMERIC"},
 754     {OPpSORT_INTEGER, ",INTEGER"},
 755     {OPpSORT_REVERSE, ",REVERSE"},
 756     {OPpSORT_INPLACE, ",INPLACE"},
 757     {OPpSORT_DESCEND, ",DESCEND"},
 758     {OPpSORT_QSORT, ",QSORT"},
 759     {OPpSORT_STABLE, ",STABLE"}
 760 };
 761
 762 const struct flag_to_name op_open_names[] = {
 763     {OPpOPEN_IN_RAW, ",IN_RAW"},
 764     {OPpOPEN_IN_CRLF, ",IN_CRLF"},
 765     {OPpOPEN_OUT_RAW, ",OUT_RAW"},
 766     {OPpOPEN_OUT_CRLF, ",OUT_CRLF"}
 767 };
 768
 769 const struct flag_to_name op_exit_names[] = {
 770     {OPpEXIT_VMSISH, ",EXIT_VMSISH"},
 771     {OPpHUSH_VMSISH, ",HUSH_VMSISH"}
 772 };
 773
 774 const struct flag_to_name op_sassign_names[] = {
 775     {OPpASSIGN_BACKWARDS, ",BACKWARDS"},
 776     {OPpASSIGN_CV_TO_GV,  ",CV2GV"}
 777 };
 778
 779 #define OP_PRIVATE_ONCE(op, flag, name) \
 780     const struct flag_to_name CAT2(op, _names)[] = {    \
 781         {(flag), (name)} \
 782     }
 783
 784 OP_PRIVATE_ONCE(op_leavesub, OPpREFCOUNTED, ",REFCOUNTED");
 785 OP_PRIVATE_ONCE(op_repeat, OPpREPEAT_DOLIST, ",DOLIST");
 786 OP_PRIVATE_ONCE(op_reverse, OPpREVERSE_INPLACE, ",INPLACE");
 787 OP_PRIVATE_ONCE(op_rv2cv, OPpLVAL_INTRO, ",INTRO");
 788 OP_PRIVATE_ONCE(op_flip, OPpFLIP_LINENUM, ",LINENUM");
 789 OP_PRIVATE_ONCE(op_gv, OPpEARLY_CV, ",EARLY_CV");
 790 OP_PRIVATE_ONCE(op_list, OPpLIST_GUESSED, ",GUESSED");
 791 OP_PRIVATE_ONCE(op_delete, OPpSLICE, ",SLICE");
 792 OP_PRIVATE_ONCE(op_exists, OPpEXISTS_SUB, ",EXISTS_SUB");
 793 OP_PRIVATE_ONCE(op_die, OPpHUSH_VMSISH, ",HUSH_VMSISH");
 794
 795 struct op_private_by_op {
 796     U16 op_type;
 797     U16 len;
 798     const struct flag_to_name *start;
 799 };
 800
 801 const struct op_private_by_op op_private_names[] = {
 802     {OP_LEAVESUB, C_ARRAY_LENGTH(op_leavesub_names), op_leavesub_names },
 803     {OP_LEAVE, C_ARRAY_LENGTH(op_leavesub_names), op_leavesub_names },
 804     {OP_LEAVESUBLV, C_ARRAY_LENGTH(op_leavesub_names), op_leavesub_names },
 805     {OP_LEAVEWRITE, C_ARRAY_LENGTH(op_leavesub_names), op_leavesub_names },
 806     {OP_DIE, C_ARRAY_LENGTH(op_die_names), op_die_names },
 807     {OP_DELETE, C_ARRAY_LENGTH(op_delete_names), op_delete_names },
 808     {OP_EXISTS, C_ARRAY_LENGTH(op_exists_names), op_exists_names },
 809     {OP_EXIT, C_ARRAY_LENGTH(op_exit_names), op_exit_names },
 810     {OP_FLIP, C_ARRAY_LENGTH(op_flip_names), op_flip_names },
 811     {OP_FLOP, C_ARRAY_LENGTH(op_flip_names), op_flip_names },
 812     {OP_GV, C_ARRAY_LENGTH(op_gv_names), op_gv_names },
 813     {OP_LIST, C_ARRAY_LENGTH(op_list_names), op_list_names },
 814     {OP_SASSIGN, C_ARRAY_LENGTH(op_sassign_names), op_sassign_names },
 815     {OP_REPEAT, C_ARRAY_LENGTH(op_repeat_names), op_repeat_names },
 816     {OP_RV2CV, C_ARRAY_LENGTH(op_rv2cv_names), op_rv2cv_names },
 817     {OP_TRANS, C_ARRAY_LENGTH(op_trans_names), op_trans_names },
 818     {OP_CONST, C_ARRAY_LENGTH(op_const_names), op_const_names },
 819     {OP_SORT, C_ARRAY_LENGTH(op_sort_names), op_sort_names },
 820     {OP_OPEN, C_ARRAY_LENGTH(op_open_names), op_open_names },
 821     {OP_BACKTICK, C_ARRAY_LENGTH(op_open_names), op_open_names }
 822 };
 823
 824 static bool
 825 S_op_private_to_names(pTHX_ SV *tmpsv, U32 optype, U32 op_private) {
 826     const struct op_private_by_op *start = op_private_names;
 827     const struct op_private_by_op *const end
 828         = op_private_names + C_ARRAY_LENGTH(op_private_names);
 829
 830     /* This is a linear search, but no worse than the code that it replaced.
 831        It's debugging code - size is more important than speed.  */
 832     do {
 833         if (optype == start->op_type) {
 834             S_append_flags(aTHX_ tmpsv, op_private, start->start,
 835                            start->start + start->len);
 836             return TRUE;
 837         }
 838     } while (++start < end);
 839     return FALSE;
 840 }
 841
 842 #define DUMP_OP_FLAGS(o,xml,level,file)                                 \
 843     if (o->op_flags || o->op_slabbed || o->op_savefree || o->op_static) { \
 844         SV * const tmpsv = newSVpvs("");                                \
 845         switch (o->op_flags & OPf_WANT) {                               \
 846         case OPf_WANT_VOID:                                             \
 847             sv_catpv(tmpsv, ",VOID");                                   \
 848             break;                                                      \
 849         case OPf_WANT_SCALAR:                                           \
 850             sv_catpv(tmpsv, ",SCALAR");                                 \
 851             break;                                                      \
 852         case OPf_WANT_LIST:                                             \
 853             sv_catpv(tmpsv, ",LIST");                                   \
 854             break;                                                      \
 855         default:                                                        \
 856             sv_catpv(tmpsv, ",UNKNOWN");                                \
 857             break;                                                      \
 858         }                                                               \
 859         append_flags(tmpsv, o->op_flags, op_flags_names);               \
 860         if (o->op_slabbed)  sv_catpvs(tmpsv, ",SLABBED");               \
 861         if (o->op_savefree) sv_catpvs(tmpsv, ",SAVEFREE");              \
 862         if (o->op_static)   sv_catpvs(tmpsv, ",STATIC");                \
 863         if (!xml)                                                        \
 864             Perl_dump_indent(aTHX_ level, file, "FLAGS = (%s)\n",       \
 865                             SvCUR(tmpsv) ? SvPVX_const(tmpsv) + 1 : "");\
 866         else                                                            \
 867             PerlIO_printf(file, " flags=\"%s\"",                        \
 868                           SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");        \
 869         SvREFCNT_dec_NN(tmpsv);                                            \
 870     }
 871
 872 #if !defined(PERL_MAD)
 873 # define xmldump_attr1(level, file, pat, arg)
 874 #else
 875 # define xmldump_attr1(level, file, pat, arg) \
 876         S_xmldump_attr(aTHX_ level, file, pat, arg)
 877 #endif
 878
 879 #define DUMP_OP_PRIVATE(o,xml,level,file)                               \
 880     if (o->op_private) {                                                \
 881         U32 optype = o->op_type;                                        \
 882         U32 oppriv = o->op_private;                                     \
 883         SV * const tmpsv = newSVpvs("");                                \
 884         if (PL_opargs[optype] & OA_TARGLEX) {                           \
 885             if (oppriv & OPpTARGET_MY)                                  \
 886                 sv_catpv(tmpsv, ",TARGET_MY");                          \
 887         }                                                               \
 888         else if (optype == OP_ENTERSUB ||                               \
 889                  optype == OP_RV2SV ||                                  \
 890                  optype == OP_GVSV ||                                   \
 891                  optype == OP_RV2AV ||                                  \
 892                  optype == OP_RV2HV ||                                  \
 893                  optype == OP_RV2GV ||                                  \
 894                  optype == OP_AELEM ||                                  \
 895                  optype == OP_HELEM )                                   \
 896         {                                                               \
 897             if (optype == OP_ENTERSUB) {                                \
 898                 append_flags(tmpsv, oppriv, op_entersub_names);         \
 899             }                                                           \
 900             else {                                                      \
 901                 switch (oppriv & OPpDEREF) {                            \
 902                 case OPpDEREF_SV:                                       \
 903                     sv_catpv(tmpsv, ",SV");                             \
 904                     break;                                              \
 905                 case OPpDEREF_AV:                                       \
 906                     sv_catpv(tmpsv, ",AV");                             \
 907                     break;                                              \
 908                 case OPpDEREF_HV:                                       \
 909                     sv_catpv(tmpsv, ",HV");                             \
 910                     break;                                              \
 911                 }                                                       \
 912                 if (oppriv & OPpMAYBE_LVSUB)                            \
 913                     sv_catpv(tmpsv, ",MAYBE_LVSUB");                    \
 914             }                                                           \
 915             if (optype == OP_AELEM || optype == OP_HELEM) {             \
 916                 if (oppriv & OPpLVAL_DEFER)                             \
 917                     sv_catpv(tmpsv, ",LVAL_DEFER");                     \
 918             }                                                           \
 919             else if (optype == OP_RV2HV || optype == OP_PADHV) {        \
 920                 if (oppriv & OPpMAYBE_TRUEBOOL)                         \
 921                     sv_catpvs(tmpsv, ",OPpMAYBE_TRUEBOOL");             \
 922                 if (oppriv & OPpTRUEBOOL)                               \
 923                     sv_catpvs(tmpsv, ",OPpTRUEBOOL");                   \
 924             }                                                           \
 925             else {                                                      \
 926                 if (oppriv & HINT_STRICT_REFS)                          \
 927                     sv_catpv(tmpsv, ",STRICT_REFS");                    \
 928                 if (oppriv & OPpOUR_INTRO)                              \
 929                     sv_catpv(tmpsv, ",OUR_INTRO");                      \
 930             }                                                           \
 931         }                                                               \
 932         else if (S_op_private_to_names(aTHX_ tmpsv, optype, oppriv)) {  \
 933         }                                                               \
 934         else if (OP_IS_FILETEST(o->op_type)) {                          \
 935             if (oppriv & OPpFT_ACCESS)                                  \
 936                 sv_catpv(tmpsv, ",FT_ACCESS");                          \
 937             if (oppriv & OPpFT_STACKED)                                 \
 938                 sv_catpv(tmpsv, ",FT_STACKED");                         \
 939             if (oppriv & OPpFT_STACKING)                                \
 940                 sv_catpv(tmpsv, ",FT_STACKING");                        \
 941             if (oppriv & OPpFT_AFTER_t)                                 \
 942                 sv_catpv(tmpsv, ",AFTER_t");                            \
 943         }                                                               \
 944         else if (o->op_type == OP_AASSIGN) {                            \
 945             if (oppriv & OPpASSIGN_COMMON)                              \
 946                 sv_catpvs(tmpsv, ",COMMON");                            \
 947             if (oppriv & OPpMAYBE_LVSUB)                                \
 948                 sv_catpvs(tmpsv, ",MAYBE_LVSUB");                       \
 949         }                                                               \
 950         if (o->op_flags & OPf_MOD && oppriv & OPpLVAL_INTRO)            \
 951             sv_catpv(tmpsv, ",INTRO");                                  \
 952         if (o->op_type == OP_PADRANGE)                                  \
 953             Perl_sv_catpvf(aTHX_ tmpsv, ",COUNT=%"UVuf,                 \
 954                            (UV)(oppriv & OPpPADRANGE_COUNTMASK));       \
 955         if (SvCUR(tmpsv)) {                                             \
 956             if (xml)                                                    \
 957                 xmldump_attr1(level+1, file, "private=\"%s\"", SvPVX(tmpsv)+1); \
 958             else                                                        \
 959                 Perl_dump_indent(aTHX_ level, file, "PRIVATE = (%s)\n", SvPVX_const(tmpsv) + 1); \
 960         } else if (!xml)                                                \
 961             Perl_dump_indent(aTHX_ level, file, "PRIVATE = (0x%"UVxf")\n", \
 962                              (UV)oppriv);                               \
 963         SvREFCNT_dec_NN(tmpsv);                                         \
 964     }
 965
 966
 967 void
 968 Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, const OP *o)
 969 {
 970     dVAR;
 971     UV      seq;
 972     const OPCODE optype = o->op_type;
 973
 974     PERL_ARGS_ASSERT_DO_OP_DUMP;
 975
 976     Perl_dump_indent(aTHX_ level, file, "{\n");
 977     level++;
 978     seq = sequence_num(o);
 979     if (seq)
 980         PerlIO_printf(file, "%-4"UVuf, seq);
 981     else
 982         PerlIO_printf(file, "????");
 983     PerlIO_printf(file,
 984                   "%*sTYPE = %s  ===> ",
 985                   (int)(PL_dumpindent*level-4), "", OP_NAME(o));
 986     if (o->op_next)
 987         PerlIO_printf(file,
 988                         o->op_type == OP_NULL ? "(%"UVuf")\n" : "%"UVuf"\n",
 989                                 sequence_num(o->op_next));
 990     else
 991         PerlIO_printf(file, "NULL\n");
 992     if (o->op_targ) {
 993         if (optype == OP_NULL) {
 994             Perl_dump_indent(aTHX_ level, file, "  (was %s)\n", PL_op_name[o->op_targ]);
 995             if (o->op_targ == OP_NEXTSTATE) {
 996                 if (CopLINE(cCOPo))
 997                     Perl_dump_indent(aTHX_ level, file, "LINE = %"UVuf"\n",
 998                                      (UV)CopLINE(cCOPo));
 999                 if (CopSTASHPV(cCOPo))
1000                     Perl_dump_indent(aTHX_ level, file, "PACKAGE = \"%s\"\n",
1001                                      CopSTASHPV(cCOPo));
1002                 if (CopLABEL(cCOPo))
1003                     Perl_dump_indent(aTHX_ level, file, "LABEL = \"%s\"\n",
1004                                      CopLABEL(cCOPo));
1005             }
1006         }
1007         else
1008             Perl_dump_indent(aTHX_ level, file, "TARG = %ld\n", (long)o->op_targ);
1009     }
1010 #ifdef DUMPADDR
1011     Perl_dump_indent(aTHX_ level, file, "ADDR = 0x%"UVxf" => 0x%"UVxf"\n", (UV)o, (UV)o->op_next);
1012 #endif
1013
1014     DUMP_OP_FLAGS(o,0,level,file);
1015     DUMP_OP_PRIVATE(o,0,level,file);
1016
1017 #ifdef PERL_MAD
1018     if (PL_madskills && o->op_madprop) {
1019         SV * const tmpsv = newSVpvs("");
1020         MADPROP* mp = o->op_madprop;
1021         Perl_dump_indent(aTHX_ level, file, "MADPROPS = {\n");
1022         level++;
1023         while (mp) {
1024             const char tmp = mp->mad_key;
1025             sv_setpvs(tmpsv,"'");
1026             if (tmp)
1027                 sv_catpvn(tmpsv, &tmp, 1);
1028             sv_catpv(tmpsv, "'=");
1029             switch (mp->mad_type) {
1030             case MAD_NULL:
1031                 sv_catpv(tmpsv, "NULL");
1032                 Perl_dump_indent(aTHX_ level, file, "%s\n", SvPVX(tmpsv));
1033                 break;
1034             case MAD_PV:
1035                 sv_catpv(tmpsv, "<");
1036                 sv_catpvn(tmpsv, (char*)mp->mad_val, mp->mad_vlen);
1037                 sv_catpv(tmpsv, ">");
1038                 Perl_dump_indent(aTHX_ level, file, "%s\n", SvPVX(tmpsv));
1039                 break;
1040             case MAD_OP:
1041                 if ((OP*)mp->mad_val) {
1042                     Perl_dump_indent(aTHX_ level, file, "%s\n", SvPVX(tmpsv));
1043                     do_op_dump(level, file, (OP*)mp->mad_val);
1044                 }
1045                 break;
1046             default:
1047                 sv_catpv(tmpsv, "(UNK)");
1048                 Perl_dump_indent(aTHX_ level, file, "%s\n", SvPVX(tmpsv));
1049                 break;
1050             }
1051             mp = mp->mad_next;
1052         }
1053         level--;
1054         Perl_dump_indent(aTHX_ level, file, "}\n");
1055
1056         SvREFCNT_dec_NN(tmpsv);
1057     }
1058 #endif
1059
1060     switch (optype) {
1061     case OP_AELEMFAST:
1062     case OP_GVSV:
1063     case OP_GV:
1064 #ifdef USE_ITHREADS
1065         Perl_dump_indent(aTHX_ level, file, "PADIX = %" IVdf "\n", (IV)cPADOPo->op_padix);
1066 #else
1067         if ( ! (o->op_flags & OPf_SPECIAL)) { /* not lexical */
1068             if (cSVOPo->op_sv) {
1069                 SV * const tmpsv = newSV(0);
1070                 ENTER;
1071                 SAVEFREESV(tmpsv);
1072 #ifdef PERL_MAD
1073                 /* FIXME - is this making unwarranted assumptions about the
1074                    UTF-8 cleanliness of the dump file handle?  */
1075                 SvUTF8_on(tmpsv);
1076 #endif
1077                 gv_fullname3(tmpsv, MUTABLE_GV(cSVOPo->op_sv), NULL);
1078                 Perl_dump_indent(aTHX_ level, file, "GV = %s\n",
1079                                  SvPV_nolen_const(tmpsv));
1080                 LEAVE;
1081             }
1082             else
1083                 Perl_dump_indent(aTHX_ level, file, "GV = NULL\n");
1084         }
1085 #endif
1086         break;
1087     case OP_CONST:
1088     case OP_HINTSEVAL:
1089     case OP_METHOD_NAMED:
1090 #ifndef USE_ITHREADS
1091         /* with ITHREADS, consts are stored in the pad, and the right pad
1092          * may not be active here, so skip */
1093         Perl_dump_indent(aTHX_ level, file, "SV = %s\n", SvPEEK(cSVOPo_sv));
1094 #endif
1095         break;
1096     case OP_NEXTSTATE:
1097     case OP_DBSTATE:
1098         if (CopLINE(cCOPo))
1099             Perl_dump_indent(aTHX_ level, file, "LINE = %"UVuf"\n",
1100                              (UV)CopLINE(cCOPo));
1101         if (CopSTASHPV(cCOPo))
1102             Perl_dump_indent(aTHX_ level, file, "PACKAGE = \"%s\"\n",
1103                              CopSTASHPV(cCOPo));
1104         if (CopLABEL(cCOPo))
1105             Perl_dump_indent(aTHX_ level, file, "LABEL = \"%s\"\n",
1106                              CopLABEL(cCOPo));
1107         break;
1108     case OP_ENTERLOOP:
1109         Perl_dump_indent(aTHX_ level, file, "REDO ===> ");
1110         if (cLOOPo->op_redoop)
1111             PerlIO_printf(file, "%"UVuf"\n", sequence_num(cLOOPo->op_redoop));
1112         else
1113             PerlIO_printf(file, "DONE\n");
1114         Perl_dump_indent(aTHX_ level, file, "NEXT ===> ");
1115         if (cLOOPo->op_nextop)
1116             PerlIO_printf(file, "%"UVuf"\n", sequence_num(cLOOPo->op_nextop));
1117         else
1118             PerlIO_printf(file, "DONE\n");
1119         Perl_dump_indent(aTHX_ level, file, "LAST ===> ");
1120         if (cLOOPo->op_lastop)
1121             PerlIO_printf(file, "%"UVuf"\n", sequence_num(cLOOPo->op_lastop));
1122         else
1123             PerlIO_printf(file, "DONE\n");
1124         break;
1125     case OP_COND_EXPR:
1126     case OP_RANGE:
1127     case OP_MAPWHILE:
1128     case OP_GREPWHILE:
1129     case OP_OR:
1130     case OP_AND:
1131         Perl_dump_indent(aTHX_ level, file, "OTHER ===> ");
1132         if (cLOGOPo->op_other)
1133             PerlIO_printf(file, "%"UVuf"\n", sequence_num(cLOGOPo->op_other));
1134         else
1135             PerlIO_printf(file, "DONE\n");
1136         break;
1137     case OP_PUSHRE:
1138     case OP_MATCH:
1139     case OP_QR:
1140     case OP_SUBST:
1141         do_pmop_dump(level, file, cPMOPo);
1142         break;
1143     case OP_LEAVE:
1144     case OP_LEAVEEVAL:
1145     case OP_LEAVESUB:
1146     case OP_LEAVESUBLV:
1147     case OP_LEAVEWRITE:
1148     case OP_SCOPE:
1149         if (o->op_private & OPpREFCOUNTED)
1150             Perl_dump_indent(aTHX_ level, file, "REFCNT = %"UVuf"\n", (UV)o->op_targ);
1151         break;
1152     default:
1153         break;
1154     }
1155     if (o->op_flags & OPf_KIDS) {
1156         OP *kid;
1157         for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling)
1158             do_op_dump(level, file, kid);
1159     }
1160     Perl_dump_indent(aTHX_ level-1, file, "}\n");
1161 }
1162
1163 void
1164 Perl_op_dump(pTHX_ const OP *o)
1165 {
1166     PERL_ARGS_ASSERT_OP_DUMP;
1167     do_op_dump(0, Perl_debug_log, o);
1168 }
1169
1170 void
1171 Perl_gv_dump(pTHX_ GV *gv)
1172 {
1173     SV *sv;
1174
1175     PERL_ARGS_ASSERT_GV_DUMP;
1176
1177     if (!gv) {
1178         PerlIO_printf(Perl_debug_log, "{}\n");
1179         return;
1180     }
1181     sv = sv_newmortal();
1182     PerlIO_printf(Perl_debug_log, "{\n");
1183     gv_fullname3(sv, gv, NULL);
1184     Perl_dump_indent(aTHX_ 1, Perl_debug_log, "GV_NAME = %s", SvPVX_const(sv));
1185     if (gv != GvEGV(gv)) {
1186         gv_efullname3(sv, GvEGV(gv), NULL);
1187         Perl_dump_indent(aTHX_ 1, Perl_debug_log, "-> %s", SvPVX_const(sv));
1188     }
1189     PerlIO_putc(Perl_debug_log, '\n');
1190     Perl_dump_indent(aTHX_ 0, Perl_debug_log, "}\n");
1191 }
1192
1193
1194 /* map magic types to the symbolic names
1195  * (with the PERL_MAGIC_ prefixed stripped)
1196  */
1197
1198 static const struct { const char type; const char *name; } magic_names[] = {
1199 #include "mg_names.c"
1200         /* this null string terminates the list */
1201         { 0,                         NULL },
1202 };
1203
1204 void
1205 Perl_do_magic_dump(pTHX_ I32 level, PerlIO *file, const MAGIC *mg, I32 nest, I32 maxnest, bool dumpops, STRLEN pvlim)
1206 {
1207     PERL_ARGS_ASSERT_DO_MAGIC_DUMP;
1208
1209     for (; mg; mg = mg->mg_moremagic) {
1210         Perl_dump_indent(aTHX_ level, file,
1211                          "  MAGIC = 0x%"UVxf"\n", PTR2UV(mg));
1212         if (mg->mg_virtual) {
1213             const MGVTBL * const v = mg->mg_virtual;
1214             if (v >= PL_magic_vtables
1215                 && v < PL_magic_vtables + magic_vtable_max) {
1216                 const U32 i = v - PL_magic_vtables;
1217                 Perl_dump_indent(aTHX_ level, file, "    MG_VIRTUAL = &PL_vtbl_%s\n", PL_magic_vtable_names[i]);
1218             }
1219             else
1220                 Perl_dump_indent(aTHX_ level, file, "    MG_VIRTUAL = 0x%"UVxf"\n", PTR2UV(v));
1221         }
1222         else
1223             Perl_dump_indent(aTHX_ level, file, "    MG_VIRTUAL = 0\n");
1224
1225         if (mg->mg_private)
1226             Perl_dump_indent(aTHX_ level, file, "    MG_PRIVATE = %d\n", mg->mg_private);
1227
1228         {
1229             int n;
1230             const char *name = NULL;
1231             for (n = 0; magic_names[n].name; n++) {
1232                 if (mg->mg_type == magic_names[n].type) {
1233                     name = magic_names[n].name;
1234                     break;
1235                 }
1236             }
1237             if (name)
1238                 Perl_dump_indent(aTHX_ level, file,
1239                                 "    MG_TYPE = PERL_MAGIC_%s\n", name);
1240             else
1241                 Perl_dump_indent(aTHX_ level, file,
1242                                 "    MG_TYPE = UNKNOWN(\\%o)\n", mg->mg_type);
1243         }
1244
1245         if (mg->mg_flags) {
1246             Perl_dump_indent(aTHX_ level, file, "    MG_FLAGS = 0x%02X\n", mg->mg_flags);
1247             if (mg->mg_type == PERL_MAGIC_envelem &&
1248                 mg->mg_flags & MGf_TAINTEDDIR)
1249                 Perl_dump_indent(aTHX_ level, file, "      TAINTEDDIR\n");
1250             if (mg->mg_type == PERL_MAGIC_regex_global &&
1251                 mg->mg_flags & MGf_MINMATCH)
1252                 Perl_dump_indent(aTHX_ level, file, "      MINMATCH\n");
1253             if (mg->mg_flags & MGf_REFCOUNTED)
1254                 Perl_dump_indent(aTHX_ level, file, "      REFCOUNTED\n");
1255             if (mg->mg_flags & MGf_GSKIP)
1256                 Perl_dump_indent(aTHX_ level, file, "      GSKIP\n");
1257             if (mg->mg_flags & MGf_COPY)
1258                 Perl_dump_indent(aTHX_ level, file, "      COPY\n");
1259             if (mg->mg_flags & MGf_DUP)
1260                 Perl_dump_indent(aTHX_ level, file, "      DUP\n");
1261             if (mg->mg_flags & MGf_LOCAL)
1262                 Perl_dump_indent(aTHX_ level, file, "      LOCAL\n");
1263         }
1264         if (mg->mg_obj) {
1265             Perl_dump_indent(aTHX_ level, file, "    MG_OBJ = 0x%"UVxf"\n",
1266                 PTR2UV(mg->mg_obj));
1267             if (mg->mg_type == PERL_MAGIC_qr) {
1268                 REGEXP* const re = (REGEXP *)mg->mg_obj;
1269                 SV * const dsv = sv_newmortal();
1270                 const char * const s
1271                     = pv_pretty(dsv, RX_WRAPPED(re), RX_WRAPLEN(re),
1272                     60, NULL, NULL,
1273                     ( PERL_PV_PRETTY_QUOTE | PERL_PV_ESCAPE_RE | PERL_PV_PRETTY_ELLIPSES |
1274                     (RX_UTF8(re) ? PERL_PV_ESCAPE_UNI : 0))
1275                 );
1276                 Perl_dump_indent(aTHX_ level+1, file, "    PAT = %s\n", s);
1277                 Perl_dump_indent(aTHX_ level+1, file, "    REFCNT = %"IVdf"\n",
1278                         (IV)RX_REFCNT(re));
1279             }
1280             if (mg->mg_flags & MGf_REFCOUNTED)
1281                 do_sv_dump(level+2, file, mg->mg_obj, nest+1, maxnest, dumpops, pvlim); /* MG is already +1 */
1282         }
1283         if (mg->mg_len)
1284             Perl_dump_indent(aTHX_ level, file, "    MG_LEN = %ld\n", (long)mg->mg_len);
1285         if (mg->mg_ptr) {
1286             Perl_dump_indent(aTHX_ level, file, "    MG_PTR = 0x%"UVxf, PTR2UV(mg->mg_ptr));
1287             if (mg->mg_len >= 0) {
1288                 if (mg->mg_type != PERL_MAGIC_utf8) {
1289                     SV * const sv = newSVpvs("");
1290                     PerlIO_printf(file, " %s", pv_display(sv, mg->mg_ptr, mg->mg_len, 0, pvlim));
1291                     SvREFCNT_dec_NN(sv);
1292                 }
1293             }
1294             else if (mg->mg_len == HEf_SVKEY) {
1295                 PerlIO_puts(file, " => HEf_SVKEY\n");
1296                 do_sv_dump(level+2, file, MUTABLE_SV(((mg)->mg_ptr)), nest+1,
1297                            maxnest, dumpops, pvlim); /* MG is already +1 */
1298                 continue;
1299             }
1300             else if (mg->mg_len == -1 && mg->mg_type == PERL_MAGIC_utf8);
1301             else
1302                 PerlIO_puts(
1303                   file,
1304                  " ???? - " __FILE__
1305                  " does not know how to handle this MG_LEN"
1306                 );
1307             PerlIO_putc(file, '\n');
1308         }
1309         if (mg->mg_type == PERL_MAGIC_utf8) {
1310             const STRLEN * const cache = (STRLEN *) mg->mg_ptr;
1311             if (cache) {
1312                 IV i;
1313                 for (i = 0; i < PERL_MAGIC_UTF8_CACHESIZE; i++)
1314                     Perl_dump_indent(aTHX_ level, file,
1315                                      "      %2"IVdf": %"UVuf" -> %"UVuf"\n",
1316                                      i,
1317                                      (UV)cache[i * 2],
1318                                      (UV)cache[i * 2 + 1]);
1319             }
1320         }
1321     }
1322 }
1323
1324 void
1325 Perl_magic_dump(pTHX_ const MAGIC *mg)
1326 {
1327     do_magic_dump(0, Perl_debug_log, mg, 0, 0, FALSE, 0);
1328 }
1329
1330 void
1331 Perl_do_hv_dump(pTHX_ I32 level, PerlIO *file, const char *name, HV *sv)
1332 {
1333     const char *hvname;
1334
1335     PERL_ARGS_ASSERT_DO_HV_DUMP;
1336
1337     Perl_dump_indent(aTHX_ level, file, "%s = 0x%"UVxf, name, PTR2UV(sv));
1338     if (sv && (hvname = HvNAME_get(sv)))
1339     {
1340         /* we have to use pv_display and HvNAMELEN_get() so that we display the real package
1341            name which quite legally could contain insane things like tabs, newlines, nulls or
1342            other scary crap - this should produce sane results - except maybe for unicode package
1343            names - but we will wait for someone to file a bug on that - demerphq */
1344         SV * const tmpsv = newSVpvs("");
1345         PerlIO_printf(file, "\t%s\n", pv_display(tmpsv, hvname, HvNAMELEN_get(sv), 0, 1024));
1346     }
1347     else
1348         PerlIO_putc(file, '\n');
1349 }
1350
1351 void
1352 Perl_do_gv_dump(pTHX_ I32 level, PerlIO *file, const char *name, GV *sv)
1353 {
1354     PERL_ARGS_ASSERT_DO_GV_DUMP;
1355
1356     Perl_dump_indent(aTHX_ level, file, "%s = 0x%"UVxf, name, PTR2UV(sv));
1357     if (sv && GvNAME(sv))
1358         PerlIO_printf(file, "\t\"%s\"\n", GvNAME(sv));
1359     else
1360         PerlIO_putc(file, '\n');
1361 }
1362
1363 void
1364 Perl_do_gvgv_dump(pTHX_ I32 level, PerlIO *file, const char *name, GV *sv)
1365 {
1366     PERL_ARGS_ASSERT_DO_GVGV_DUMP;
1367
1368     Perl_dump_indent(aTHX_ level, file, "%s = 0x%"UVxf, name, PTR2UV(sv));
1369     if (sv && GvNAME(sv)) {
1370         const char *hvname;
1371         PerlIO_printf(file, "\t\"");
1372         if (GvSTASH(sv) && (hvname = HvNAME_get(GvSTASH(sv))))
1373             PerlIO_printf(file, "%s\" :: \"", hvname);
1374         PerlIO_printf(file, "%s\"\n", GvNAME(sv));
1375     }
1376     else
1377         PerlIO_putc(file, '\n');
1378 }
1379
1380 const struct flag_to_name first_sv_flags_names[] = {
1381     {SVs_TEMP, "TEMP,"},
1382     {SVs_OBJECT, "OBJECT,"},
1383     {SVs_GMG, "GMG,"},
1384     {SVs_SMG, "SMG,"},
1385     {SVs_RMG, "RMG,"},
1386     {SVf_IOK, "IOK,"},
1387     {SVf_NOK, "NOK,"},
1388     {SVf_POK, "POK,"}
1389 };
1390
1391 const struct flag_to_name second_sv_flags_names[] = {
1392     {SVf_OOK, "OOK,"},
1393     {SVf_FAKE, "FAKE,"},
1394     {SVf_READONLY, "READONLY,"},
1395     {SVf_IsCOW, "IsCOW,"},
1396     {SVf_BREAK, "BREAK,"},
1397     {SVf_AMAGIC, "OVERLOAD,"},
1398     {SVp_IOK, "pIOK,"},
1399     {SVp_NOK, "pNOK,"},
1400     {SVp_POK, "pPOK,"}
1401 };
1402
1403 const struct flag_to_name cv_flags_names[] = {
1404     {CVf_ANON, "ANON,"},
1405     {CVf_UNIQUE, "UNIQUE,"},
1406     {CVf_CLONE, "CLONE,"},
1407     {CVf_CLONED, "CLONED,"},
1408     {CVf_CONST, "CONST,"},
1409     {CVf_NODEBUG, "NODEBUG,"},
1410     {CVf_LVALUE, "LVALUE,"},
1411     {CVf_METHOD, "METHOD,"},
1412     {CVf_WEAKOUTSIDE, "WEAKOUTSIDE,"},
1413     {CVf_CVGV_RC, "CVGV_RC,"},
1414     {CVf_DYNFILE, "DYNFILE,"},
1415     {CVf_AUTOLOAD, "AUTOLOAD,"},
1416     {CVf_HASEVAL, "HASEVAL"},
1417     {CVf_SLABBED, "SLABBED,"},
1418     {CVf_ISXSUB, "ISXSUB,"}
1419 };
1420
1421 const struct flag_to_name hv_flags_names[] = {
1422     {SVphv_SHAREKEYS, "SHAREKEYS,"},
1423     {SVphv_LAZYDEL, "LAZYDEL,"},
1424     {SVphv_HASKFLAGS, "HASKFLAGS,"},
1425     {SVphv_CLONEABLE, "CLONEABLE,"}
1426 };
1427
1428 const struct flag_to_name gp_flags_names[] = {
1429     {GVf_INTRO, "INTRO,"},
1430     {GVf_MULTI, "MULTI,"},
1431     {GVf_ASSUMECV, "ASSUMECV,"},
1432     {GVf_IN_PAD, "IN_PAD,"}
1433 };
1434
1435 const struct flag_to_name gp_flags_imported_names[] = {
1436     {GVf_IMPORTED_SV, " SV"},
1437     {GVf_IMPORTED_AV, " AV"},
1438     {GVf_IMPORTED_HV, " HV"},
1439     {GVf_IMPORTED_CV, " CV"},
1440 };
1441
1442 const struct flag_to_name regexp_flags_names[] = {
1443     {RXf_PMf_MULTILINE,   "PMf_MULTILINE,"},
1444     {RXf_PMf_SINGLELINE,  "PMf_SINGLELINE,"},
1445     {RXf_PMf_FOLD,        "PMf_FOLD,"},
1446     {RXf_PMf_EXTENDED,    "PMf_EXTENDED,"},
1447     {RXf_PMf_KEEPCOPY,    "PMf_KEEPCOPY,"},
1448     {RXf_ANCH_BOL,        "ANCH_BOL,"},
1449     {RXf_ANCH_MBOL,       "ANCH_MBOL,"},
1450     {RXf_ANCH_SBOL,       "ANCH_SBOL,"},
1451     {RXf_ANCH_GPOS,       "ANCH_GPOS,"},
1452     {RXf_GPOS_SEEN,       "GPOS_SEEN,"},
1453     {RXf_GPOS_FLOAT,      "GPOS_FLOAT,"},
1454     {RXf_NO_INPLACE_SUBST, "NO_INPLACE_SUBST,"},
1455     {RXf_EVAL_SEEN,       "EVAL_SEEN,"},
1456     {RXf_CANY_SEEN,       "CANY_SEEN,"},
1457     {RXf_NOSCAN,          "NOSCAN,"},
1458     {RXf_CHECK_ALL,       "CHECK_ALL,"},
1459     {RXf_MATCH_UTF8,      "MATCH_UTF8,"},
1460     {RXf_USE_INTUIT_NOML, "USE_INTUIT_NOML,"},
1461     {RXf_USE_INTUIT_ML,   "USE_INTUIT_ML,"},
1462     {RXf_INTUIT_TAIL,     "INTUIT_TAIL,"},
1463     {RXf_SPLIT,           "SPLIT,"},
1464     {RXf_COPY_DONE,       "COPY_DONE,"},
1465     {RXf_TAINTED_SEEN,    "TAINTED_SEEN,"},
1466     {RXf_TAINTED,         "TAINTED,"},
1467     {RXf_START_ONLY,      "START_ONLY,"},
1468     {RXf_SKIPWHITE,       "SKIPWHITE,"},
1469     {RXf_WHITE,           "WHITE,"},
1470     {RXf_NULL,            "NULL,"},
1471 };
1472
1473 void
1474 Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bool dumpops, STRLEN pvlim)
1475 {
1476     dVAR;
1477     SV *d;
1478     const char *s;
1479     U32 flags;
1480     U32 type;
1481
1482     PERL_ARGS_ASSERT_DO_SV_DUMP;
1483
1484     if (!sv) {
1485         Perl_dump_indent(aTHX_ level, file, "SV = 0\n");
1486         return;
1487     }
1488
1489     flags = SvFLAGS(sv);
1490     type = SvTYPE(sv);
1491
1492     /* process general SV flags */
1493
1494     d = Perl_newSVpvf(aTHX_
1495                    "(0x%"UVxf") at 0x%"UVxf"\n%*s  REFCNT = %"IVdf"\n%*s  FLAGS = (",
1496                    PTR2UV(SvANY(sv)), PTR2UV(sv),
1497                    (int)(PL_dumpindent*level), "", (IV)SvREFCNT(sv),
1498                    (int)(PL_dumpindent*level), "");
1499
1500     if (!((flags & SVpad_NAME) == SVpad_NAME
1501           && (type == SVt_PVMG || type == SVt_PVNV))) {
1502         if ((flags & SVs_PADMY) && (flags & SVs_PADSTALE))
1503             sv_catpv(d, "PADSTALE,");
1504     }
1505     if (!((flags & SVpad_NAME) == SVpad_NAME && type == SVt_PVMG)) {
1506         if (!(flags & SVs_PADMY) && (flags & SVs_PADTMP))
1507             sv_catpv(d, "PADTMP,");
1508         if (flags & SVs_PADMY)  sv_catpv(d, "PADMY,");
1509     }
1510     append_flags(d, flags, first_sv_flags_names);
1511     if (flags & SVf_ROK)  {
1512                                 sv_catpv(d, "ROK,");
1513         if (SvWEAKREF(sv))      sv_catpv(d, "WEAKREF,");
1514     }
1515     append_flags(d, flags, second_sv_flags_names);
1516     if (flags & SVp_SCREAM && type != SVt_PVHV && !isGV_with_GP(sv)) {
1517         if (SvPCS_IMPORTED(sv))
1518                                 sv_catpv(d, "PCS_IMPORTED,");
1519         else
1520                                 sv_catpv(d, "SCREAM,");
1521     }
1522
1523     /* process type-specific SV flags */
1524
1525     switch (type) {
1526     case SVt_PVCV:
1527     case SVt_PVFM:
1528         append_flags(d, CvFLAGS(sv), cv_flags_names);
1529         break;
1530     case SVt_PVHV:
1531         append_flags(d, flags, hv_flags_names);
1532         break;
1533     case SVt_PVGV:
1534     case SVt_PVLV:
1535         if (isGV_with_GP(sv)) {
1536             append_flags(d, GvFLAGS(sv), gp_flags_names);
1537         }
1538         if (isGV_with_GP(sv) && GvIMPORTED(sv)) {
1539             sv_catpv(d, "IMPORT");
1540             if (GvIMPORTED(sv) == GVf_IMPORTED)
1541                 sv_catpv(d, "ALL,");
1542             else {
1543                 sv_catpv(d, "(");
1544                 append_flags(d, GvFLAGS(sv), gp_flags_imported_names);
1545                 sv_catpv(d, " ),");
1546             }
1547         }
1548         /* FALL THROUGH */
1549     default:
1550     evaled_or_uv:
1551         if (SvEVALED(sv))       sv_catpv(d, "EVALED,");
1552         if (SvIsUV(sv) && !(flags & SVf_ROK))   sv_catpv(d, "IsUV,");
1553         break;
1554     case SVt_PVMG:
1555         if (SvTAIL(sv))         sv_catpv(d, "TAIL,");
1556         if (SvVALID(sv))        sv_catpv(d, "VALID,");
1557         if (SvPAD_TYPED(sv))    sv_catpv(d, "TYPED,");
1558         if (SvPAD_OUR(sv))      sv_catpv(d, "OUR,");
1559         /* FALL THROUGH */
1560     case SVt_PVNV:
1561         if (SvPAD_STATE(sv))    sv_catpv(d, "STATE,");
1562         goto evaled_or_uv;
1563     case SVt_PVAV:
1564         break;
1565     }
1566     /* SVphv_SHAREKEYS is also 0x20000000 */
1567     if ((type != SVt_PVHV) && SvUTF8(sv))
1568         sv_catpv(d, "UTF8");
1569
1570     if (*(SvEND(d) - 1) == ',') {
1571         SvCUR_set(d, SvCUR(d) - 1);
1572         SvPVX(d)[SvCUR(d)] = '\0';
1573     }
1574     sv_catpv(d, ")");
1575     s = SvPVX_const(d);
1576
1577     /* dump initial SV details */
1578
1579 #ifdef DEBUG_LEAKING_SCALARS
1580     Perl_dump_indent(aTHX_ level, file,
1581         "ALLOCATED at %s:%d %s %s (parent 0x%"UVxf"); serial %"UVuf"\n",
1582         sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1583         sv->sv_debug_line,
1584         sv->sv_debug_inpad ? "for" : "by",
1585         sv->sv_debug_optype ? PL_op_name[sv->sv_debug_optype]: "(none)",
1586         PTR2UV(sv->sv_debug_parent),
1587         sv->sv_debug_serial
1588     );
1589 #endif
1590     Perl_dump_indent(aTHX_ level, file, "SV = ");
1591
1592     /* Dump SV type */
1593
1594     if (type < SVt_LAST) {
1595         PerlIO_printf(file, "%s%s\n", svtypenames[type], s);
1596
1597         if (type ==  SVt_NULL) {
1598             SvREFCNT_dec_NN(d);
1599             return;
1600         }
1601     } else {
1602         PerlIO_printf(file, "UNKNOWN(0x%"UVxf") %s\n", (UV)type, s);
1603         SvREFCNT_dec_NN(d);
1604         return;
1605     }
1606
1607     /* Dump general SV fields */
1608
1609     if ((type >= SVt_PVIV && type != SVt_PVAV && type != SVt_PVHV
1610          && type != SVt_PVCV && type != SVt_PVFM && type != SVt_PVIO
1611          && type != SVt_REGEXP && !isGV_with_GP(sv) && !SvVALID(sv))
1612         || (type == SVt_IV && !SvROK(sv))) {
1613         if (SvIsUV(sv)
1614 #ifdef PERL_OLD_COPY_ON_WRITE
1615                        || SvIsCOW(sv)
1616 #endif
1617                                      )
1618             Perl_dump_indent(aTHX_ level, file, "  UV = %"UVuf, (UV)SvUVX(sv));
1619         else
1620             Perl_dump_indent(aTHX_ level, file, "  IV = %"IVdf, (IV)SvIVX(sv));
1621 #ifdef PERL_OLD_COPY_ON_WRITE
1622         if (SvIsCOW_shared_hash(sv))
1623             PerlIO_printf(file, "  (HASH)");
1624         else if (SvIsCOW_normal(sv))
1625             PerlIO_printf(file, "  (COW from 0x%"UVxf")", (UV)SvUVX(sv));
1626 #endif
1627         PerlIO_putc(file, '\n');
1628     }
1629
1630     if ((type == SVt_PVNV || type == SVt_PVMG)
1631         && (SvFLAGS(sv) & SVpad_NAME) == SVpad_NAME) {
1632         Perl_dump_indent(aTHX_ level, file, "  COP_LOW = %"UVuf"\n",
1633                          (UV) COP_SEQ_RANGE_LOW(sv));
1634         Perl_dump_indent(aTHX_ level, file, "  COP_HIGH = %"UVuf"\n",
1635                          (UV) COP_SEQ_RANGE_HIGH(sv));
1636     } else if ((type >= SVt_PVNV && type != SVt_PVAV && type != SVt_PVHV
1637                 && type != SVt_PVCV && type != SVt_PVFM  && type != SVt_REGEXP
1638                 && type != SVt_PVIO && !isGV_with_GP(sv) && !SvVALID(sv))
1639                || type == SVt_NV) {
1640         STORE_NUMERIC_LOCAL_SET_STANDARD();
1641         /* %Vg doesn't work? --jhi */
1642 #ifdef USE_LONG_DOUBLE
1643         Perl_dump_indent(aTHX_ level, file, "  NV = %.*" PERL_PRIgldbl "\n", LDBL_DIG, SvNVX(sv));
1644 #else
1645         Perl_dump_indent(aTHX_ level, file, "  NV = %.*g\n", DBL_DIG, SvNVX(sv));
1646 #endif
1647         RESTORE_NUMERIC_LOCAL();
1648     }
1649
1650     if (SvROK(sv)) {
1651         Perl_dump_indent(aTHX_ level, file, "  RV = 0x%"UVxf"\n", PTR2UV(SvRV(sv)));
1652         if (nest < maxnest)
1653             do_sv_dump(level+1, file, SvRV(sv), nest+1, maxnest, dumpops, pvlim);
1654     }
1655
1656     if (type < SVt_PV) {
1657         SvREFCNT_dec_NN(d);
1658         return;
1659     }
1660
1661     if (type <= SVt_PVLV && !isGV_with_GP(sv)) {
1662         const bool re = isREGEXP(sv);
1663         const char * const ptr =
1664             re ? RX_WRAPPED((REGEXP*)sv) : SvPVX_const(sv);
1665         if (ptr) {
1666             STRLEN delta;
1667             if (SvOOK(sv)) {
1668                 SvOOK_offset(sv, delta);
1669                 Perl_dump_indent(aTHX_ level, file,"  OFFSET = %"UVuf"\n",
1670                                  (UV) delta);
1671             } else {
1672                 delta = 0;
1673             }
1674             Perl_dump_indent(aTHX_ level, file,"  PV = 0x%"UVxf" ", PTR2UV(ptr));
1675             if (SvOOK(sv)) {
1676                 PerlIO_printf(file, "( %s . ) ",
1677                               pv_display(d, ptr - delta, delta, 0,
1678                                          pvlim));
1679             }
1680             PerlIO_printf(file, "%s", pv_display(d, ptr, SvCUR(sv),
1681                                                  re ? 0 : SvLEN(sv),
1682                                                  pvlim));
1683             if (SvUTF8(sv)) /* the 6?  \x{....} */
1684                 PerlIO_printf(file, " [UTF8 \"%s\"]", sv_uni_display(d, sv, 6 * SvCUR(sv), UNI_DISPLAY_QQ));
1685             PerlIO_printf(file, "\n");
1686             Perl_dump_indent(aTHX_ level, file, "  CUR = %"IVdf"\n", (IV)SvCUR(sv));
1687             if (!re)
1688                 Perl_dump_indent(aTHX_ level, file, "  LEN = %"IVdf"\n",
1689                                        (IV)SvLEN(sv));
1690 #ifdef PERL_NEW_COPY_ON_WRITE
1691             if (SvIsCOW(sv) && SvLEN(sv))
1692                 Perl_dump_indent(aTHX_ level, file, "  COW_REFCNT = %d\n",
1693                                        CowREFCNT(sv));
1694 #endif
1695         }
1696         else
1697             Perl_dump_indent(aTHX_ level, file, "  PV = 0\n");
1698     }
1699
1700     if (type >= SVt_PVMG) {
1701         if (type == SVt_PVMG && SvPAD_OUR(sv)) {
1702             HV * const ost = SvOURSTASH(sv);
1703             if (ost)
1704                 do_hv_dump(level, file, "  OURSTASH", ost);
1705         } else {
1706             if (SvMAGIC(sv))
1707                 do_magic_dump(level, file, SvMAGIC(sv), nest+1, maxnest, dumpops, pvlim);
1708         }
1709         if (SvSTASH(sv))
1710             do_hv_dump(level, file, "  STASH", SvSTASH(sv));
1711
1712         if ((type == SVt_PVMG || type == SVt_PVLV) && SvVALID(sv)) {
1713             Perl_dump_indent(aTHX_ level, file, "  RARE = %u\n", (U8)BmRARE(sv));
1714             Perl_dump_indent(aTHX_ level, file, "  PREVIOUS = %"UVuf"\n", (UV)BmPREVIOUS(sv));
1715             Perl_dump_indent(aTHX_ level, file, "  USEFUL = %"IVdf"\n", (IV)BmUSEFUL(sv));
1716         }
1717     }
1718
1719     /* Dump type-specific SV fields */
1720
1721     switch (type) {
1722     case SVt_PVAV:
1723         Perl_dump_indent(aTHX_ level, file, "  ARRAY = 0x%"UVxf, PTR2UV(AvARRAY(sv)));
1724         if (AvARRAY(sv) != AvALLOC(sv)) {
1725             PerlIO_printf(file, " (offset=%"IVdf")\n", (IV)(AvARRAY(sv) - AvALLOC(sv)));
1726             Perl_dump_indent(aTHX_ level, file, "  ALLOC = 0x%"UVxf"\n", PTR2UV(AvALLOC(sv)));
1727         }
1728         else
1729             PerlIO_putc(file, '\n');
1730         Perl_dump_indent(aTHX_ level, file, "  FILL = %"IVdf"\n", (IV)AvFILLp(sv));
1731         Perl_dump_indent(aTHX_ level, file, "  MAX = %"IVdf"\n", (IV)AvMAX(sv));
1732         Perl_dump_indent(aTHX_ level, file, "  ARYLEN = 0x%"UVxf"\n", SvMAGIC(sv) ? PTR2UV(AvARYLEN(sv)) : 0);
1733         sv_setpvs(d, "");
1734         if (AvREAL(sv)) sv_catpv(d, ",REAL");
1735         if (AvREIFY(sv))        sv_catpv(d, ",REIFY");
1736         Perl_dump_indent(aTHX_ level, file, "  FLAGS = (%s)\n",
1737                          SvCUR(d) ? SvPVX_const(d) + 1 : "");
1738         if (nest < maxnest && av_len(MUTABLE_AV(sv)) >= 0) {
1739             int count;
1740             for (count = 0; count <=  av_len(MUTABLE_AV(sv)) && count < maxnest; count++) {
1741                 SV** const elt = av_fetch(MUTABLE_AV(sv),count,0);
1742
1743                 Perl_dump_indent(aTHX_ level + 1, file, "Elt No. %"IVdf"\n", (IV)count);
1744                 if (elt)
1745                     do_sv_dump(level+1, file, *elt, nest+1, maxnest, dumpops, pvlim);
1746             }
1747         }
1748         break;
1749     case SVt_PVHV:
1750         Perl_dump_indent(aTHX_ level, file, "  ARRAY = 0x%"UVxf, PTR2UV(HvARRAY(sv)));
1751         if (HvARRAY(sv) && HvUSEDKEYS(sv)) {
1752             /* Show distribution of HEs in the ARRAY */
1753             int freq[200];
1754 #define FREQ_MAX ((int)(sizeof freq / sizeof freq[0] - 1))
1755             int i;
1756             int max = 0;
1757             U32 pow2 = 2, keys = HvUSEDKEYS(sv);
1758             NV theoret, sum = 0;
1759
1760             PerlIO_printf(file, "  (");
1761             Zero(freq, FREQ_MAX + 1, int);
1762             for (i = 0; (STRLEN)i <= HvMAX(sv); i++) {
1763                 HE* h;
1764                 int count = 0;
1765                 for (h = HvARRAY(sv)[i]; h; h = HeNEXT(h))
1766                     count++;
1767                 if (count > FREQ_MAX)
1768                     count = FREQ_MAX;
1769                 freq[count]++;
1770                 if (max < count)
1771                     max = count;
1772             }
1773             for (i = 0; i <= max; i++) {
1774                 if (freq[i]) {
1775                     PerlIO_printf(file, "%d%s:%d", i,
1776                                   (i == FREQ_MAX) ? "+" : "",
1777                                   freq[i]);
1778                     if (i != max)
1779                         PerlIO_printf(file, ", ");
1780                 }
1781             }
1782             PerlIO_putc(file, ')');
1783             /* The "quality" of a hash is defined as the total number of
1784                comparisons needed to access every element once, relative
1785                to the expected number needed for a random hash.
1786
1787                The total number of comparisons is equal to the sum of
1788                the squares of the number of entries in each bucket.
1789                For a random hash of n keys into k buckets, the expected
1790                value is
1791                                 n + n(n-1)/2k
1792             */
1793
1794             for (i = max; i > 0; i--) { /* Precision: count down. */
1795                 sum += freq[i] * i * i;
1796             }
1797             while ((keys = keys >> 1))
1798                 pow2 = pow2 << 1;
1799             theoret = HvUSEDKEYS(sv);
1800             theoret += theoret * (theoret-1)/pow2;
1801             PerlIO_putc(file, '\n');
1802             Perl_dump_indent(aTHX_ level, file, "  hash quality = %.1"NVff"%%", theoret/sum*100);
1803         }
1804         PerlIO_putc(file, '\n');
1805         Perl_dump_indent(aTHX_ level, file, "  KEYS = %"IVdf"\n", (IV)HvUSEDKEYS(sv));
1806         Perl_dump_indent(aTHX_ level, file, "  FILL = %"IVdf"\n", (IV)HvFILL(sv));
1807         Perl_dump_indent(aTHX_ level, file, "  MAX = %"IVdf"\n", (IV)HvMAX(sv));
1808         if (SvOOK(sv)) {
1809             Perl_dump_indent(aTHX_ level, file, "  RITER = %"IVdf"\n", (IV)HvRITER_get(sv));
1810             Perl_dump_indent(aTHX_ level, file, "  EITER = 0x%"UVxf"\n", PTR2UV(HvEITER_get(sv)));
1811             Perl_dump_indent(aTHX_ level, file, "  RAND = 0x%"UVxf, (UV)HvRAND_get(sv));
1812             if (HvRAND_get(sv) != HvLASTRAND_get(sv) && HvRITER_get(sv) != -1 ) {
1813                 PerlIO_printf(file, " (LAST = 0x%"UVxf")\n", (UV)HvLASTRAND_get(sv));
1814             } else {
1815                 PerlIO_putc(file, '\n');
1816             }
1817         }
1818         {
1819             MAGIC * const mg = mg_find(sv, PERL_MAGIC_symtab);
1820             if (mg && mg->mg_obj) {
1821                 Perl_dump_indent(aTHX_ level, file, "  PMROOT = 0x%"UVxf"\n", PTR2UV(mg->mg_obj));
1822             }
1823         }
1824         {
1825             const char * const hvname = HvNAME_get(sv);
1826             if (hvname)
1827                 Perl_dump_indent(aTHX_ level, file, "  NAME = \"%s\"\n", hvname);
1828         }
1829         if (SvOOK(sv)) {
1830             AV * const backrefs
1831                 = *Perl_hv_backreferences_p(aTHX_ MUTABLE_HV(sv));
1832             struct mro_meta * const meta = HvAUX(sv)->xhv_mro_meta;
1833             if (HvAUX(sv)->xhv_name_count)
1834                 Perl_dump_indent(aTHX_
1835                  level, file, "  NAMECOUNT = %"IVdf"\n",
1836                  (IV)HvAUX(sv)->xhv_name_count
1837                 );
1838             if (HvAUX(sv)->xhv_name_u.xhvnameu_name && HvENAME_HEK_NN(sv)) {
1839                 const I32 count = HvAUX(sv)->xhv_name_count;
1840                 if (count) {
1841                     SV * const names = newSVpvs_flags("", SVs_TEMP);
1842                     /* The starting point is the first element if count is
1843                        positive and the second element if count is negative. */
1844                     HEK *const *hekp = HvAUX(sv)->xhv_name_u.xhvnameu_names
1845                         + (count < 0 ? 1 : 0);
1846                     HEK *const *const endp = HvAUX(sv)->xhv_name_u.xhvnameu_names
1847                         + (count < 0 ? -count : count);
1848                     while (hekp < endp) {
1849                         if (*hekp) {
1850                             sv_catpvs(names, ", \"");
1851                             sv_catpvn(names, HEK_KEY(*hekp), HEK_LEN(*hekp));
1852                             sv_catpvs(names, "\"");
1853                         } else {
1854                             /* This should never happen. */
1855                             sv_catpvs(names, ", (null)");
1856                         }
1857                         ++hekp;
1858                     }
1859                     Perl_dump_indent(aTHX_
1860                      level, file, "  ENAME = %s\n", SvPV_nolen(names)+2
1861                     );
1862                 }
1863                 else
1864                     Perl_dump_indent(aTHX_
1865                      level, file, "  ENAME = \"%s\"\n", HvENAME_get(sv)
1866                     );
1867             }
1868             if (backrefs) {
1869                 Perl_dump_indent(aTHX_ level, file, "  BACKREFS = 0x%"UVxf"\n",
1870                                  PTR2UV(backrefs));
1871                 do_sv_dump(level+1, file, MUTABLE_SV(backrefs), nest+1, maxnest,
1872                            dumpops, pvlim);
1873             }
1874             if (meta) {
1875                 /* FIXME - mro_algs kflags can signal a UTF-8 name.  */
1876                 Perl_dump_indent(aTHX_ level, file, "  MRO_WHICH = \"%.*s\" (0x%"UVxf")\n",
1877                                  (int)meta->mro_which->length,
1878                                  meta->mro_which->name,
1879                                  PTR2UV(meta->mro_which));
1880                 Perl_dump_indent(aTHX_ level, file, "  CACHE_GEN = 0x%"UVxf"\n",
1881                                  (UV)meta->cache_gen);
1882                 Perl_dump_indent(aTHX_ level, file, "  PKG_GEN = 0x%"UVxf"\n",
1883                                  (UV)meta->pkg_gen);
1884                 if (meta->mro_linear_all) {
1885                     Perl_dump_indent(aTHX_ level, file, "  MRO_LINEAR_ALL = 0x%"UVxf"\n",
1886                                  PTR2UV(meta->mro_linear_all));
1887                 do_sv_dump(level+1, file, MUTABLE_SV(meta->mro_linear_all), nest+1, maxnest,
1888                            dumpops, pvlim);
1889                 }
1890                 if (meta->mro_linear_current) {
1891                     Perl_dump_indent(aTHX_ level, file, "  MRO_LINEAR_CURRENT = 0x%"UVxf"\n",
1892                                  PTR2UV(meta->mro_linear_current));
1893                 do_sv_dump(level+1, file, MUTABLE_SV(meta->mro_linear_current), nest+1, maxnest,
1894                            dumpops, pvlim);
1895                 }
1896                 if (meta->mro_nextmethod) {
1897                     Perl_dump_indent(aTHX_ level, file, "  MRO_NEXTMETHOD = 0x%"UVxf"\n",
1898                                  PTR2UV(meta->mro_nextmethod));
1899                 do_sv_dump(level+1, file, MUTABLE_SV(meta->mro_nextmethod), nest+1, maxnest,
1900                            dumpops, pvlim);
1901                 }
1902                 if (meta->isa) {
1903                     Perl_dump_indent(aTHX_ level, file, "  ISA = 0x%"UVxf"\n",
1904                                  PTR2UV(meta->isa));
1905                 do_sv_dump(level+1, file, MUTABLE_SV(meta->isa), nest+1, maxnest,
1906                            dumpops, pvlim);
1907                 }
1908             }
1909         }
1910         if (nest < maxnest) {
1911             HV * const hv = MUTABLE_HV(sv);
1912             STRLEN i;
1913             HE *he;
1914
1915             if (HvARRAY(hv)) {
1916                 int count = maxnest - nest;
1917                 for (i=0; i <= HvMAX(hv); i++) {
1918                     for (he = HvARRAY(hv)[i]; he; he = HeNEXT(he)) {
1919                         U32 hash;
1920                         SV * keysv;
1921                         const char * keypv;
1922                         SV * elt;
1923                         STRLEN len;
1924
1925                         if (count-- <= 0) goto DONEHV;
1926
1927                         hash = HeHASH(he);
1928                         keysv = hv_iterkeysv(he);
1929                         keypv = SvPV_const(keysv, len);
1930                         elt = HeVAL(he);
1931
1932                         Perl_dump_indent(aTHX_ level+1, file, "Elt %s ", pv_display(d, keypv, len, 0, pvlim));
1933                         if (SvUTF8(keysv))
1934                             PerlIO_printf(file, "[UTF8 \"%s\"] ", sv_uni_display(d, keysv, 6 * SvCUR(keysv), UNI_DISPLAY_QQ));
1935                         if (HvEITER_get(hv) == he)
1936                             PerlIO_printf(file, "[CURRENT] ");
1937                         PerlIO_printf(file, "HASH = 0x%"UVxf"\n", (UV) hash);
1938                         do_sv_dump(level+1, file, elt, nest+1, maxnest, dumpops, pvlim);
1939                     }
1940                 }
1941               DONEHV:;
1942             }
1943         }
1944         break;
1945
1946     case SVt_PVCV:
1947         if (CvAUTOLOAD(sv)) {
1948             STRLEN len;
1949             const char *const name =  SvPV_const(sv, len);
1950             Perl_dump_indent(aTHX_ level, file, "  AUTOLOAD = \"%.*s\"\n",
1951                              (int) len, name);
1952         }
1953         if (SvPOK(sv)) {
1954             Perl_dump_indent(aTHX_ level, file, "  PROTOTYPE = \"%.*s\"\n",
1955                              (int) CvPROTOLEN(sv), CvPROTO(sv));
1956         }
1957         /* FALL THROUGH */
1958     case SVt_PVFM:
1959         do_hv_dump(level, file, "  COMP_STASH", CvSTASH(sv));
1960         if (!CvISXSUB(sv)) {
1961             if (CvSTART(sv)) {
1962                 Perl_dump_indent(aTHX_ level, file,
1963                                  "  START = 0x%"UVxf" ===> %"IVdf"\n",
1964                                  PTR2UV(CvSTART(sv)),
1965                                  (IV)sequence_num(CvSTART(sv)));
1966             }
1967             Perl_dump_indent(aTHX_ level, file, "  ROOT = 0x%"UVxf"\n",
1968                              PTR2UV(CvROOT(sv)));
1969             if (CvROOT(sv) && dumpops) {
1970                 do_op_dump(level+1, file, CvROOT(sv));
1971             }
1972         } else {
1973             SV * const constant = cv_const_sv((const CV *)sv);
1974
1975             Perl_dump_indent(aTHX_ level, file, "  XSUB = 0x%"UVxf"\n", PTR2UV(CvXSUB(sv)));
1976
1977             if (constant) {
1978                 Perl_dump_indent(aTHX_ level, file, "  XSUBANY = 0x%"UVxf
1979                                  " (CONST SV)\n",
1980                                  PTR2UV(CvXSUBANY(sv).any_ptr));
1981                 do_sv_dump(level+1, file, constant, nest+1, maxnest, dumpops,
1982                            pvlim);
1983             } else {
1984                 Perl_dump_indent(aTHX_ level, file, "  XSUBANY = %"IVdf"\n",
1985                                  (IV)CvXSUBANY(sv).any_i32);
1986             }
1987         }
1988         if (CvNAMED(sv))
1989             Perl_dump_indent(aTHX_ level, file, "  NAME = \"%s\"\n",
1990                                    HEK_KEY(CvNAME_HEK((CV *)sv)));
1991         else do_gvgv_dump(level, file, "  GVGV::GV", CvGV(sv));
1992         Perl_dump_indent(aTHX_ level, file, "  FILE = \"%s\"\n", CvFILE(sv));
1993         Perl_dump_indent(aTHX_ level, file, "  DEPTH = %"IVdf"\n", (IV)CvDEPTH(sv));
1994         Perl_dump_indent(aTHX_ level, file, "  FLAGS = 0x%"UVxf"\n", (UV)CvFLAGS(sv));
1995         Perl_dump_indent(aTHX_ level, file, "  OUTSIDE_SEQ = %"UVuf"\n", (UV)CvOUTSIDE_SEQ(sv));
1996         Perl_dump_indent(aTHX_ level, file, "  PADLIST = 0x%"UVxf"\n", PTR2UV(CvPADLIST(sv)));
1997         if (nest < maxnest) {
1998             do_dump_pad(level+1, file, CvPADLIST(sv), 0);
1999         }
2000         {
2001             const CV * const outside = CvOUTSIDE(sv);
2002             Perl_dump_indent(aTHX_ level, file, "  OUTSIDE = 0x%"UVxf" (%s)\n",
2003                         PTR2UV(outside),
2004                         (!outside ? "null"
2005                          : CvANON(outside) ? "ANON"
2006                          : (outside == PL_main_cv) ? "MAIN"
2007                          : CvUNIQUE(outside) ? "UNIQUE"
2008                          : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED"));
2009         }
2010         if (nest < maxnest && (CvCLONE(sv) || CvCLONED(sv)))
2011             do_sv_dump(level+1, file, MUTABLE_SV(CvOUTSIDE(sv)), nest+1, maxnest, dumpops, pvlim);
2012         break;
2013
2014     case SVt_PVGV:
2015     case SVt_PVLV:
2016         if (type == SVt_PVLV) {
2017             Perl_dump_indent(aTHX_ level, file, "  TYPE = %c\n", LvTYPE(sv));
2018             Perl_dump_indent(aTHX_ level, file, "  TARGOFF = %"IVdf"\n", (IV)LvTARGOFF(sv));
2019             Perl_dump_indent(aTHX_ level, file, "  TARGLEN = %"IVdf"\n", (IV)LvTARGLEN(sv));
2020             Perl_dump_indent(aTHX_ level, file, "  TARG = 0x%"UVxf"\n", PTR2UV(LvTARG(sv)));
2021             Perl_dump_indent(aTHX_ level, file, "  FLAGS = %"IVdf"\n", (IV)LvFLAGS(sv));
2022             if (LvTYPE(sv) != 't' && LvTYPE(sv) != 'T')
2023                 do_sv_dump(level+1, file, LvTARG(sv), nest+1, maxnest,
2024                     dumpops, pvlim);
2025         }
2026         if (isREGEXP(sv)) goto dumpregexp;
2027         if (!isGV_with_GP(sv))
2028             break;
2029         Perl_dump_indent(aTHX_ level, file, "  NAME = \"%s\"\n", GvNAME(sv));
2030         Perl_dump_indent(aTHX_ level, file, "  NAMELEN = %"IVdf"\n", (IV)GvNAMELEN(sv));
2031         do_hv_dump (level, file, "  GvSTASH", GvSTASH(sv));
2032         Perl_dump_indent(aTHX_ level, file, "  GP = 0x%"UVxf"\n", PTR2UV(GvGP(sv)));
2033         if (!GvGP(sv))
2034             break;
2035         Perl_dump_indent(aTHX_ level, file, "    SV = 0x%"UVxf"\n", PTR2UV(GvSV(sv)));
2036         Perl_dump_indent(aTHX_ level, file, "    REFCNT = %"IVdf"\n", (IV)GvREFCNT(sv));
2037         Perl_dump_indent(aTHX_ level, file, "    IO = 0x%"UVxf"\n", PTR2UV(GvIOp(sv)));
2038         Perl_dump_indent(aTHX_ level, file, "    FORM = 0x%"UVxf"  \n", PTR2UV(GvFORM(sv)));
2039         Perl_dump_indent(aTHX_ level, file, "    AV = 0x%"UVxf"\n", PTR2UV(GvAV(sv)));
2040         Perl_dump_indent(aTHX_ level, file, "    HV = 0x%"UVxf"\n", PTR2UV(GvHV(sv)));
2041         Perl_dump_indent(aTHX_ level, file, "    CV = 0x%"UVxf"\n", PTR2UV(GvCV(sv)));
2042         Perl_dump_indent(aTHX_ level, file, "    CVGEN = 0x%"UVxf"\n", (UV)GvCVGEN(sv));
2043         Perl_dump_indent(aTHX_ level, file, "    LINE = %"IVdf"\n", (IV)GvLINE(sv));
2044         Perl_dump_indent(aTHX_ level, file, "    FILE = \"%s\"\n", GvFILE(sv));
2045         Perl_dump_indent(aTHX_ level, file, "    FLAGS = 0x%"UVxf"\n", (UV)GvFLAGS(sv));
2046         do_gv_dump (level, file, "    EGV", GvEGV(sv));
2047         break;
2048     case SVt_PVIO:
2049         Perl_dump_indent(aTHX_ level, file, "  IFP = 0x%"UVxf"\n", PTR2UV(IoIFP(sv)));
2050         Perl_dump_indent(aTHX_ level, file, "  OFP = 0x%"UVxf"\n", PTR2UV(IoOFP(sv)));
2051         Perl_dump_indent(aTHX_ level, file, "  DIRP = 0x%"UVxf"\n", PTR2UV(IoDIRP(sv)));
2052         Perl_dump_indent(aTHX_ level, file, "  LINES = %"IVdf"\n", (IV)IoLINES(sv));
2053         Perl_dump_indent(aTHX_ level, file, "  PAGE = %"IVdf"\n", (IV)IoPAGE(sv));
2054         Perl_dump_indent(aTHX_ level, file, "  PAGE_LEN = %"IVdf"\n", (IV)IoPAGE_LEN(sv));
2055         Perl_dump_indent(aTHX_ level, file, "  LINES_LEFT = %"IVdf"\n", (IV)IoLINES_LEFT(sv));
2056         if (IoTOP_NAME(sv))
2057             Perl_dump_indent(aTHX_ level, file, "  TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
2058         if (!IoTOP_GV(sv) || SvTYPE(IoTOP_GV(sv)) == SVt_PVGV)
2059             do_gv_dump (level, file, "  TOP_GV", IoTOP_GV(sv));
2060         else {
2061             Perl_dump_indent(aTHX_ level, file, "  TOP_GV = 0x%"UVxf"\n",
2062                              PTR2UV(IoTOP_GV(sv)));
2063             do_sv_dump (level+1, file, MUTABLE_SV(IoTOP_GV(sv)), nest+1,
2064                         maxnest, dumpops, pvlim);
2065         }
2066         /* Source filters hide things that are not GVs in these three, so let's
2067            be careful out there.  */
2068         if (IoFMT_NAME(sv))
2069             Perl_dump_indent(aTHX_ level, file, "  FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
2070         if (!IoFMT_GV(sv) || SvTYPE(IoFMT_GV(sv)) == SVt_PVGV)
2071             do_gv_dump (level, file, "  FMT_GV", IoFMT_GV(sv));
2072         else {
2073             Perl_dump_indent(aTHX_ level, file, "  FMT_GV = 0x%"UVxf"\n",
2074                              PTR2UV(IoFMT_GV(sv)));
2075             do_sv_dump (level+1, file, MUTABLE_SV(IoFMT_GV(sv)), nest+1,
2076                         maxnest, dumpops, pvlim);
2077         }
2078         if (IoBOTTOM_NAME(sv))
2079             Perl_dump_indent(aTHX_ level, file, "  BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
2080         if (!IoBOTTOM_GV(sv) || SvTYPE(IoBOTTOM_GV(sv)) == SVt_PVGV)
2081             do_gv_dump (level, file, "  BOTTOM_GV", IoBOTTOM_GV(sv));
2082         else {
2083             Perl_dump_indent(aTHX_ level, file, "  BOTTOM_GV = 0x%"UVxf"\n",
2084                              PTR2UV(IoBOTTOM_GV(sv)));
2085             do_sv_dump (level+1, file, MUTABLE_SV(IoBOTTOM_GV(sv)), nest+1,
2086                         maxnest, dumpops, pvlim);
2087         }
2088         if (isPRINT(IoTYPE(sv)))
2089             Perl_dump_indent(aTHX_ level, file, "  TYPE = '%c'\n", IoTYPE(sv));
2090         else
2091             Perl_dump_indent(aTHX_ level, file, "  TYPE = '\\%o'\n", IoTYPE(sv));
2092         Perl_dump_indent(aTHX_ level, file, "  FLAGS = 0x%"UVxf"\n", (UV)IoFLAGS(sv));
2093         break;
2094     case SVt_REGEXP:
2095       dumpregexp:
2096         {
2097             struct regexp * const r = ReANY((REGEXP*)sv);
2098 #define SV_SET_STRINGIFY_REGEXP_FLAGS(d,flags) STMT_START { \
2099             sv_setpv(d,"");                                 \
2100             append_flags(d, flags, regexp_flags_names);     \
2101             if (SvCUR(d) > 0 && *(SvEND(d) - 1) == ',') {       \
2102                 SvCUR_set(d, SvCUR(d) - 1);                 \
2103                 SvPVX(d)[SvCUR(d)] = '\0';                  \
2104             }                                               \
2105 } STMT_END
2106             SV_SET_STRINGIFY_REGEXP_FLAGS(d,r->compflags);
2107             Perl_dump_indent(aTHX_ level, file, "  COMPFLAGS = 0x%"UVxf" (%s)\n",
2108                                 (UV)(r->compflags), SvPVX_const(d));
2109
2110             SV_SET_STRINGIFY_REGEXP_FLAGS(d,r->extflags);
2111             Perl_dump_indent(aTHX_ level, file, "  EXTFLAGS = 0x%"UVxf" (%s)\n",
2112                                 (UV)(r->extflags), SvPVX_const(d));
2113 #undef SV_SET_STRINGIFY_REGEXP_FLAGS
2114
2115             Perl_dump_indent(aTHX_ level, file, "  INTFLAGS = 0x%"UVxf"\n",
2116                                 (UV)(r->intflags));
2117             Perl_dump_indent(aTHX_ level, file, "  NPARENS = %"UVuf"\n",
2118                                 (UV)(r->nparens));
2119             Perl_dump_indent(aTHX_ level, file, "  LASTPAREN = %"UVuf"\n",
2120                                 (UV)(r->lastparen));
2121             Perl_dump_indent(aTHX_ level, file, "  LASTCLOSEPAREN = %"UVuf"\n",
2122                                 (UV)(r->lastcloseparen));
2123             Perl_dump_indent(aTHX_ level, file, "  MINLEN = %"IVdf"\n",
2124                                 (IV)(r->minlen));
2125             Perl_dump_indent(aTHX_ level, file, "  MINLENRET = %"IVdf"\n",
2126                                 (IV)(r->minlenret));
2127             Perl_dump_indent(aTHX_ level, file, "  GOFS = %"UVuf"\n",
2128                                 (UV)(r->gofs));
2129             Perl_dump_indent(aTHX_ level, file, "  PRE_PREFIX = %"UVuf"\n",
2130                                 (UV)(r->pre_prefix));
2131             Perl_dump_indent(aTHX_ level, file, "  SUBLEN = %"IVdf"\n",
2132                                 (IV)(r->sublen));
2133             Perl_dump_indent(aTHX_ level, file, "  SUBOFFSET = %"IVdf"\n",
2134                                 (IV)(r->suboffset));
2135             Perl_dump_indent(aTHX_ level, file, "  SUBCOFFSET = %"IVdf"\n",
2136                                 (IV)(r->subcoffset));
2137             if (r->subbeg)
2138                 Perl_dump_indent(aTHX_ level, file, "  SUBBEG = 0x%"UVxf" %s\n",
2139                             PTR2UV(r->subbeg),
2140                             pv_display(d, r->subbeg, r->sublen, 50, pvlim));
2141             else
2142                 Perl_dump_indent(aTHX_ level, file, "  SUBBEG = 0x0\n");
2143             Perl_dump_indent(aTHX_ level, file, "  ENGINE = 0x%"UVxf"\n",
2144                                 PTR2UV(r->engine));
2145             Perl_dump_indent(aTHX_ level, file, "  MOTHER_RE = 0x%"UVxf"\n",
2146                                 PTR2UV(r->mother_re));
2147             Perl_dump_indent(aTHX_ level, file, "  PAREN_NAMES = 0x%"UVxf"\n",
2148                                 PTR2UV(r->paren_names));
2149             Perl_dump_indent(aTHX_ level, file, "  SUBSTRS = 0x%"UVxf"\n",
2150                                 PTR2UV(r->substrs));
2151             Perl_dump_indent(aTHX_ level, file, "  PPRIVATE = 0x%"UVxf"\n",
2152                                 PTR2UV(r->pprivate));
2153             Perl_dump_indent(aTHX_ level, file, "  OFFS = 0x%"UVxf"\n",
2154                                 PTR2UV(r->offs));
2155             Perl_dump_indent(aTHX_ level, file, "  QR_ANONCV = 0x%"UVxf"\n",
2156                                 PTR2UV(r->qr_anoncv));
2157 #ifdef PERL_ANY_COW
2158             Perl_dump_indent(aTHX_ level, file, "  SAVED_COPY = 0x%"UVxf"\n",
2159                                 PTR2UV(r->saved_copy));
2160 #endif
2161         }
2162         break;
2163     }
2164     SvREFCNT_dec_NN(d);
2165 }
2166
2167 void
2168 Perl_sv_dump(pTHX_ SV *sv)
2169 {
2170     dVAR;
2171
2172     PERL_ARGS_ASSERT_SV_DUMP;
2173
2174     if (SvROK(sv))
2175         do_sv_dump(0, Perl_debug_log, sv, 0, 4, 0, 0);
2176     else
2177         do_sv_dump(0, Perl_debug_log, sv, 0, 0, 0, 0);
2178 }
2179
2180 int
2181 Perl_runops_debug(pTHX)
2182 {
2183     dVAR;
2184     if (!PL_op) {
2185         Perl_ck_warner_d(aTHX_ packWARN(WARN_DEBUGGING), "NULL OP IN RUN");
2186         return 0;
2187     }
2188
2189     DEBUG_l(Perl_deb(aTHX_ "Entering new RUNOPS level\n"));
2190     do {
2191         if (PL_debug) {
2192             if (PL_watchaddr && (*PL_watchaddr != PL_watchok))
2193                 PerlIO_printf(Perl_debug_log,
2194                               "WARNING: %"UVxf" changed from %"UVxf" to %"UVxf"\n",
2195                               PTR2UV(PL_watchaddr), PTR2UV(PL_watchok),
2196                               PTR2UV(*PL_watchaddr));
2197             if (DEBUG_s_TEST_) {
2198                 if (DEBUG_v_TEST_) {
2199                     PerlIO_printf(Perl_debug_log, "\n");
2200                     deb_stack_all();
2201                 }
2202                 else
2203                     debstack();
2204             }
2205
2206
2207             if (DEBUG_t_TEST_) debop(PL_op);
2208             if (DEBUG_P_TEST_) debprof(PL_op);
2209         }
2210
2211         OP_ENTRY_PROBE(OP_NAME(PL_op));
2212     } while ((PL_op = PL_op->op_ppaddr(aTHX)));
2213     DEBUG_l(Perl_deb(aTHX_ "leaving RUNOPS level\n"));
2214
2215     TAINT_NOT;
2216     return 0;
2217 }
2218
2219 I32
2220 Perl_debop(pTHX_ const OP *o)
2221 {
2222     dVAR;
2223
2224     PERL_ARGS_ASSERT_DEBOP;
2225
2226     if (CopSTASH_eq(PL_curcop, PL_debstash) && !DEBUG_J_TEST_)
2227         return 0;
2228
2229     Perl_deb(aTHX_ "%s", OP_NAME(o));
2230     switch (o->op_type) {
2231     case OP_CONST:
2232     case OP_HINTSEVAL:
2233         /* With ITHREADS, consts are stored in the pad, and the right pad
2234          * may not be active here, so check.
2235          * Looks like only during compiling the pads are illegal.
2236          */
2237 #ifdef USE_ITHREADS
2238         if ((((SVOP*)o)->op_sv) || !IN_PERL_COMPILETIME)
2239 #endif
2240             PerlIO_printf(Perl_debug_log, "(%s)", SvPEEK(cSVOPo_sv));
2241         break;
2242     case OP_GVSV:
2243     case OP_GV:
2244         if (cGVOPo_gv) {
2245             SV * const sv = newSV(0);
2246 #ifdef PERL_MAD
2247             /* FIXME - is this making unwarranted assumptions about the
2248                UTF-8 cleanliness of the dump file handle?  */
2249             SvUTF8_on(sv);
2250 #endif
2251             gv_fullname3(sv, cGVOPo_gv, NULL);
2252             PerlIO_printf(Perl_debug_log, "(%s)", SvPV_nolen_const(sv));
2253             SvREFCNT_dec_NN(sv);
2254         }
2255         else
2256             PerlIO_printf(Perl_debug_log, "(NULL)");
2257         break;
2258
2259     {
2260         int count;
2261
2262     case OP_PADSV:
2263     case OP_PADAV:
2264     case OP_PADHV:
2265         count = 1;
2266         goto dump_padop;
2267     case OP_PADRANGE:
2268         count = o->op_private & OPpPADRANGE_COUNTMASK;
2269     dump_padop:
2270         /* print the lexical's name */
2271         {
2272             CV * const cv = deb_curcv(cxstack_ix);
2273             SV *sv;
2274             PAD * comppad = NULL;
2275             int i;
2276
2277             if (cv) {
2278                 PADLIST * const padlist = CvPADLIST(cv);
2279                 comppad = *PadlistARRAY(padlist);
2280             }
2281             PerlIO_printf(Perl_debug_log, "(");
2282             for (i = 0; i < count; i++) {
2283                 if (comppad &&
2284                         (sv = *av_fetch(comppad, o->op_targ + i, FALSE)))
2285                     PerlIO_printf(Perl_debug_log, "%s", SvPV_nolen_const(sv));
2286                 else
2287                     PerlIO_printf(Perl_debug_log, "[%"UVuf"]",
2288                             (UV)o->op_targ+i);
2289                 if (i < count-1)
2290                     PerlIO_printf(Perl_debug_log, ",");
2291             }
2292             PerlIO_printf(Perl_debug_log, ")");
2293         }
2294         break;
2295     }
2296
2297     default:
2298         break;
2299     }
2300     PerlIO_printf(Perl_debug_log, "\n");
2301     return 0;
2302 }
2303
2304 STATIC CV*
2305 S_deb_curcv(pTHX_ const I32 ix)
2306 {
2307     dVAR;
2308     const PERL_CONTEXT * const cx = &cxstack[ix];
2309     if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT)
2310         return cx->blk_sub.cv;
2311     else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
2312         return cx->blk_eval.cv;
2313     else if (ix == 0 && PL_curstackinfo->si_type == PERLSI_MAIN)
2314         return PL_main_cv;
2315     else if (ix <= 0)
2316         return NULL;
2317     else
2318         return deb_curcv(ix - 1);
2319 }
2320
2321 void
2322 Perl_watch(pTHX_ char **addr)
2323 {
2324     dVAR;
2325
2326     PERL_ARGS_ASSERT_WATCH;
2327
2328     PL_watchaddr = addr;
2329     PL_watchok = *addr;
2330     PerlIO_printf(Perl_debug_log, "WATCHING, %"UVxf" is currently %"UVxf"\n",
2331         PTR2UV(PL_watchaddr), PTR2UV(PL_watchok));
2332 }
2333
2334 STATIC void
2335 S_debprof(pTHX_ const OP *o)
2336 {
2337     dVAR;
2338
2339     PERL_ARGS_ASSERT_DEBPROF;
2340
2341     if (!DEBUG_J_TEST_ && CopSTASH_eq(PL_curcop, PL_debstash))
2342         return;
2343     if (!PL_profiledata)
2344         Newxz(PL_profiledata, MAXO, U32);
2345     ++PL_profiledata[o->op_type];
2346 }
2347
2348 void
2349 Perl_debprofdump(pTHX)
2350 {
2351     dVAR;
2352     unsigned i;
2353     if (!PL_profiledata)
2354         return;
2355     for (i = 0; i < MAXO; i++) {
2356         if (PL_profiledata[i])
2357             PerlIO_printf(Perl_debug_log,
2358                           "%5lu %s\n", (unsigned long)PL_profiledata[i],
2359                                        PL_op_name[i]);
2360     }
2361 }
2362
2363 #ifdef PERL_MAD
2364 /*
2365  *    XML variants of most of the above routines
2366  */
2367
2368 STATIC void
2369 S_xmldump_attr(pTHX_ I32 level, PerlIO *file, const char* pat, ...)
2370 {
2371     va_list args;
2372
2373     PERL_ARGS_ASSERT_XMLDUMP_ATTR;
2374
2375     PerlIO_printf(file, "\n    ");
2376     va_start(args, pat);
2377     xmldump_vindent(level, file, pat, &args);
2378     va_end(args);
2379 }
2380
2381
2382 void
2383 Perl_xmldump_indent(pTHX_ I32 level, PerlIO *file, const char* pat, ...)
2384 {
2385     va_list args;
2386     PERL_ARGS_ASSERT_XMLDUMP_INDENT;
2387     va_start(args, pat);
2388     xmldump_vindent(level, file, pat, &args);
2389     va_end(args);
2390 }
2391
2392 void
2393 Perl_xmldump_vindent(pTHX_ I32 level, PerlIO *file, const char* pat, va_list *args)
2394 {
2395     PERL_ARGS_ASSERT_XMLDUMP_VINDENT;
2396
2397     PerlIO_printf(file, "%*s", (int)(level*PL_dumpindent), "");
2398     PerlIO_vprintf(file, pat, *args);
2399 }
2400
2401 void
2402 Perl_xmldump_all(pTHX)
2403 {
2404     xmldump_all_perl(FALSE);
2405 }
2406
2407 void
2408 Perl_xmldump_all_perl(pTHX_ bool justperl PERL_UNUSED_DECL)
2409 {
2410     PerlIO_setlinebuf(PL_xmlfp);
2411     if (PL_main_root)
2412         op_xmldump(PL_main_root);
2413     /* someday we might call this, when it outputs XML: */
2414     /* xmldump_packsubs_perl(PL_defstash, justperl); */
2415     if (PL_xmlfp != (PerlIO*)PerlIO_stdout())
2416         PerlIO_close(PL_xmlfp);
2417     PL_xmlfp = 0;
2418 }
2419
2420 void
2421 Perl_xmldump_packsubs(pTHX_ const HV *stash)
2422 {
2423     PERL_ARGS_ASSERT_XMLDUMP_PACKSUBS;
2424     xmldump_packsubs_perl(stash, FALSE);
2425 }
2426
2427 void
2428 Perl_xmldump_packsubs_perl(pTHX_ const HV *stash, bool justperl)
2429 {
2430     I32 i;
2431     HE  *entry;
2432
2433     PERL_ARGS_ASSERT_XMLDUMP_PACKSUBS_PERL;
2434
2435     if (!HvARRAY(stash))
2436         return;
2437     for (i = 0; i <= (I32) HvMAX(stash); i++) {
2438         for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
2439             GV *gv = MUTABLE_GV(HeVAL(entry));
2440             HV *hv;
2441             if (SvTYPE(gv) != SVt_PVGV || !GvGP(gv))
2442                 continue;
2443             if (GvCVu(gv))
2444                 xmldump_sub_perl(gv, justperl);
2445             if (GvFORM(gv))
2446                 xmldump_form(gv);
2447             if (HeKEY(entry)[HeKLEN(entry)-1] == ':'
2448                 && (hv = GvHV(gv)) && hv != PL_defstash)
2449                 xmldump_packsubs_perl(hv, justperl);    /* nested package */
2450         }
2451     }
2452 }
2453
2454 void
2455 Perl_xmldump_sub(pTHX_ const GV *gv)
2456 {
2457     PERL_ARGS_ASSERT_XMLDUMP_SUB;
2458     xmldump_sub_perl(gv, FALSE);
2459 }
2460
2461 void
2462 Perl_xmldump_sub_perl(pTHX_ const GV *gv, bool justperl)
2463 {
2464     SV * sv;
2465
2466     PERL_ARGS_ASSERT_XMLDUMP_SUB_PERL;
2467
2468     if (justperl && (CvISXSUB(GvCV(gv)) || !CvROOT(GvCV(gv))))
2469         return;
2470
2471     sv = sv_newmortal();
2472     gv_fullname3(sv, gv, NULL);
2473     Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "\nSUB %s = ", SvPVX(sv));
2474     if (CvXSUB(GvCV(gv)))
2475         Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "(xsub 0x%"UVxf" %d)\n",
2476             PTR2UV(CvXSUB(GvCV(gv))),
2477             (int)CvXSUBANY(GvCV(gv)).any_i32);
2478     else if (CvROOT(GvCV(gv)))
2479         op_xmldump(CvROOT(GvCV(gv)));
2480     else
2481         Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "<undef>\n");
2482 }
2483
2484 void
2485 Perl_xmldump_form(pTHX_ const GV *gv)
2486 {
2487     SV * const sv = sv_newmortal();
2488
2489     PERL_ARGS_ASSERT_XMLDUMP_FORM;
2490
2491     gv_fullname3(sv, gv, NULL);
2492     Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "\nFORMAT %s = ", SvPVX(sv));
2493     if (CvROOT(GvFORM(gv)))
2494         op_xmldump(CvROOT(GvFORM(gv)));
2495     else
2496         Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "<undef>\n");
2497 }
2498
2499 void
2500 Perl_xmldump_eval(pTHX)
2501 {
2502     op_xmldump(PL_eval_root);
2503 }
2504
2505 char *
2506 Perl_sv_catxmlsv(pTHX_ SV *dsv, SV *ssv)
2507 {
2508     PERL_ARGS_ASSERT_SV_CATXMLSV;
2509     return sv_catxmlpvn(dsv, SvPVX(ssv), SvCUR(ssv), SvUTF8(ssv));
2510 }
2511
2512 char *
2513 Perl_sv_catxmlpv(pTHX_ SV *dsv, const char *pv, int utf8)
2514 {
2515     PERL_ARGS_ASSERT_SV_CATXMLPV;
2516     return sv_catxmlpvn(dsv, pv, strlen(pv), utf8);
2517 }
2518
2519 char *
2520 Perl_sv_catxmlpvn(pTHX_ SV *dsv, const char *pv, STRLEN len, int utf8)
2521 {
2522     unsigned int c;
2523     const char * const e = pv + len;
2524     const char * const start = pv;
2525     STRLEN dsvcur;
2526     STRLEN cl;
2527
2528     PERL_ARGS_ASSERT_SV_CATXMLPVN;
2529
2530     sv_catpvs(dsv,"");
2531     dsvcur = SvCUR(dsv);        /* in case we have to restart */
2532
2533   retry:
2534     while (pv < e) {
2535         if (utf8) {
2536             c = utf8_to_uvchr_buf((U8*)pv, (U8*)e, &cl);
2537             if (cl == 0) {
2538                 SvCUR(dsv) = dsvcur;
2539                 pv = start;
2540                 utf8 = 0;
2541                 goto retry;
2542             }
2543         }
2544         else
2545             c = (*pv & 255);
2546
2547         switch (c) {
2548         case 0x00:
2549         case 0x01:
2550         case 0x02:
2551         case 0x03:
2552         case 0x04:
2553         case 0x05:
2554         case 0x06:
2555         case 0x07:
2556         case 0x08:
2557         case 0x0b:
2558         case 0x0c:
2559         case 0x0e:
2560         case 0x0f:
2561         case 0x10:
2562         case 0x11:
2563         case 0x12:
2564         case 0x13:
2565         case 0x14:
2566         case 0x15:
2567         case 0x16:
2568         case 0x17:
2569         case 0x18:
2570         case 0x19:
2571         case 0x1a:
2572         case 0x1b:
2573         case 0x1c:
2574         case 0x1d:
2575         case 0x1e:
2576         case 0x1f:
2577         case 0x7f:
2578         case 0x80:
2579         case 0x81:
2580         case 0x82:
2581         case 0x83:
2582         case 0x84:
2583         case 0x86:
2584         case 0x87:
2585         case 0x88:
2586         case 0x89:
2587         case 0x90:
2588         case 0x91:
2589         case 0x92:
2590         case 0x93:
2591         case 0x94:
2592         case 0x95:
2593         case 0x96:
2594         case 0x97:
2595         case 0x98:
2596         case 0x99:
2597         case 0x9a:
2598         case 0x9b:
2599         case 0x9c:
2600         case 0x9d:
2601         case 0x9e:
2602         case 0x9f:
2603             Perl_sv_catpvf(aTHX_ dsv, "STUPIDXML(#x%X)", c);
2604             break;
2605         case '<':
2606             sv_catpvs(dsv, "&lt;");
2607             break;
2608         case '>':
2609             sv_catpvs(dsv, "&gt;");
2610             break;
2611         case '&':
2612             sv_catpvs(dsv, "&amp;");
2613             break;
2614         case '"':
2615             sv_catpvs(dsv, "&#34;");
2616             break;
2617         default:
2618             if (c < 0xD800) {
2619                 if (c < 32 || c > 127) {
2620                     Perl_sv_catpvf(aTHX_ dsv, "&#x%X;", c);
2621                 }
2622                 else {
2623                     const char string = (char) c;
2624                     sv_catpvn(dsv, &string, 1);
2625                 }
2626                 break;
2627             }
2628             if ((c >= 0xD800 && c <= 0xDB7F) ||
2629                 (c >= 0xDC00 && c <= 0xDFFF) ||
2630                 (c >= 0xFFF0 && c <= 0xFFFF) ||
2631                  c > 0x10ffff)
2632                 Perl_sv_catpvf(aTHX_ dsv, "STUPIDXML(#x%X)", c);
2633             else
2634                 Perl_sv_catpvf(aTHX_ dsv, "&#x%X;", c);
2635         }
2636
2637         if (utf8)
2638             pv += UTF8SKIP(pv);
2639         else
2640             pv++;
2641     }
2642
2643     return SvPVX(dsv);
2644 }
2645
2646 char *
2647 Perl_sv_xmlpeek(pTHX_ SV *sv)
2648 {
2649     SV * const t = sv_newmortal();
2650     STRLEN n_a;
2651     int unref = 0;
2652
2653     PERL_ARGS_ASSERT_SV_XMLPEEK;
2654
2655     sv_utf8_upgrade(t);
2656     sv_setpvs(t, "");
2657     /* retry: */
2658     if (!sv) {
2659         sv_catpv(t, "VOID=\"\"");
2660         goto finish;
2661     }
2662     else if (sv == (const SV *)0x55555555 || SvTYPE(sv) == 'U') {
2663         sv_catpv(t, "WILD=\"\"");
2664         goto finish;
2665     }
2666     else if (sv == &PL_sv_undef || sv == &PL_sv_no || sv == &PL_sv_yes || sv == &PL_sv_placeholder) {
2667         if (sv == &PL_sv_undef) {
2668             sv_catpv(t, "SV_UNDEF=\"1\"");
2669             if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
2670                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
2671                 SvREADONLY(sv))
2672                 goto finish;
2673         }
2674         else if (sv == &PL_sv_no) {
2675             sv_catpv(t, "SV_NO=\"1\"");
2676             if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
2677                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
2678                 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
2679                                   SVp_POK|SVp_NOK)) &&
2680                 SvCUR(sv) == 0 &&
2681                 SvNVX(sv) == 0.0)
2682                 goto finish;
2683         }
2684         else if (sv == &PL_sv_yes) {
2685             sv_catpv(t, "SV_YES=\"1\"");
2686             if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
2687                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
2688                 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
2689                                   SVp_POK|SVp_NOK)) &&
2690                 SvCUR(sv) == 1 &&
2691                 SvPVX(sv) && *SvPVX(sv) == '1' &&
2692                 SvNVX(sv) == 1.0)
2693                 goto finish;
2694         }
2695         else {
2696             sv_catpv(t, "SV_PLACEHOLDER=\"1\"");
2697             if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
2698                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
2699                 SvREADONLY(sv))
2700                 goto finish;
2701         }
2702         sv_catpv(t, " XXX=\"\" ");
2703     }
2704     else if (SvREFCNT(sv) == 0) {
2705         sv_catpv(t, " refcnt=\"0\"");
2706         unref++;
2707     }
2708     else if (DEBUG_R_TEST_) {
2709         int is_tmp = 0;
2710         I32 ix;
2711         /* is this SV on the tmps stack? */
2712         for (ix=PL_tmps_ix; ix>=0; ix--) {
2713             if (PL_tmps_stack[ix] == sv) {
2714                 is_tmp = 1;
2715                 break;
2716             }
2717         }
2718         if (SvREFCNT(sv) > 1)
2719             Perl_sv_catpvf(aTHX_ t, " DRT=\"<%"UVuf"%s>\"", (UV)SvREFCNT(sv),
2720                     is_tmp ? "T" : "");
2721         else if (is_tmp)
2722             sv_catpv(t, " DRT=\"<T>\"");
2723     }
2724
2725     if (SvROK(sv)) {
2726         sv_catpv(t, " ROK=\"\"");
2727     }
2728     switch (SvTYPE(sv)) {
2729     default:
2730         sv_catpv(t, " FREED=\"1\"");
2731         goto finish;
2732
2733     case SVt_NULL:
2734         sv_catpv(t, " UNDEF=\"1\"");
2735         goto finish;
2736     case SVt_IV:
2737         sv_catpv(t, " IV=\"");
2738         break;
2739     case SVt_NV:
2740         sv_catpv(t, " NV=\"");
2741         break;
2742     case SVt_PV:
2743         sv_catpv(t, " PV=\"");
2744         break;
2745     case SVt_PVIV:
2746         sv_catpv(t, " PVIV=\"");
2747         break;
2748     case SVt_PVNV:
2749         sv_catpv(t, " PVNV=\"");
2750         break;
2751     case SVt_PVMG:
2752         sv_catpv(t, " PVMG=\"");
2753         break;
2754     case SVt_PVLV:
2755         sv_catpv(t, " PVLV=\"");
2756         break;
2757     case SVt_PVAV:
2758         sv_catpv(t, " AV=\"");
2759         break;
2760     case SVt_PVHV:
2761         sv_catpv(t, " HV=\"");
2762         break;
2763     case SVt_PVCV:
2764         if (CvGV(sv))
2765             Perl_sv_catpvf(aTHX_ t, " CV=\"(%s)\"", GvNAME(CvGV(sv)));
2766         else
2767             sv_catpv(t, " CV=\"()\"");
2768         goto finish;
2769     case SVt_PVGV:
2770         sv_catpv(t, " GV=\"");
2771         break;
2772     case SVt_BIND:
2773         sv_catpv(t, " BIND=\"");
2774         break;
2775     case SVt_REGEXP:
2776         sv_catpv(t, " REGEXP=\"");
2777         break;
2778     case SVt_PVFM:
2779         sv_catpv(t, " FM=\"");
2780         break;
2781     case SVt_PVIO:
2782         sv_catpv(t, " IO=\"");
2783         break;
2784     }
2785
2786     if (SvPOKp(sv)) {
2787         if (SvPVX(sv)) {
2788             sv_catxmlsv(t, sv);
2789         }
2790     }
2791     else if (SvNOKp(sv)) {
2792         STORE_NUMERIC_LOCAL_SET_STANDARD();
2793         Perl_sv_catpvf(aTHX_ t, "%"NVgf"",SvNVX(sv));
2794         RESTORE_NUMERIC_LOCAL();
2795     }
2796     else if (SvIOKp(sv)) {
2797         if (SvIsUV(sv))
2798             Perl_sv_catpvf(aTHX_ t, "%"UVuf"", (UV)SvUVX(sv));
2799         else
2800             Perl_sv_catpvf(aTHX_ t, "%"IVdf"", (IV)SvIVX(sv));
2801     }
2802     else
2803         sv_catpv(t, "");
2804     sv_catpv(t, "\"");
2805
2806   finish:
2807     while (unref--)
2808         sv_catpv(t, ")");
2809     return SvPV(t, n_a);
2810 }
2811
2812 void
2813 Perl_do_pmop_xmldump(pTHX_ I32 level, PerlIO *file, const PMOP *pm)
2814 {
2815     PERL_ARGS_ASSERT_DO_PMOP_XMLDUMP;
2816
2817     if (!pm) {
2818         Perl_xmldump_indent(aTHX_ level, file, "<pmop/>\n");
2819         return;
2820     }
2821     Perl_xmldump_indent(aTHX_ level, file, "<pmop \n");
2822     level++;
2823     if (PM_GETRE(pm)) {
2824         REGEXP *const r = PM_GETRE(pm);
2825         SV * const tmpsv = newSVpvn_utf8("", 0, TRUE);
2826         sv_catxmlsv(tmpsv, MUTABLE_SV(r));
2827         Perl_xmldump_indent(aTHX_ level, file, "pre=\"%s\"\n",
2828              SvPVX(tmpsv));
2829         SvREFCNT_dec_NN(tmpsv);
2830         Perl_xmldump_indent(aTHX_ level, file, "when=\"%s\"\n",
2831              (pm->op_private & OPpRUNTIME) ? "RUN" : "COMP");
2832     }
2833     else
2834         Perl_xmldump_indent(aTHX_ level, file, "pre=\"\" when=\"RUN\"\n");
2835     if (pm->op_pmflags || (PM_GETRE(pm) && RX_CHECK_SUBSTR(PM_GETRE(pm)))) {
2836         SV * const tmpsv = pm_description(pm);
2837         Perl_xmldump_indent(aTHX_ level, file, "pmflags=\"%s\"\n", SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");
2838         SvREFCNT_dec_NN(tmpsv);
2839     }
2840
2841     level--;
2842     if (pm->op_type != OP_PUSHRE && pm->op_pmreplrootu.op_pmreplroot) {
2843         Perl_xmldump_indent(aTHX_ level, file, ">\n");
2844         Perl_xmldump_indent(aTHX_ level+1, file, "<pm_repl>\n");
2845         do_op_xmldump(level+2, file, pm->op_pmreplrootu.op_pmreplroot);
2846         Perl_xmldump_indent(aTHX_ level+1, file, "</pm_repl>\n");
2847         Perl_xmldump_indent(aTHX_ level, file, "</pmop>\n");
2848     }
2849     else
2850         Perl_xmldump_indent(aTHX_ level, file, "/>\n");
2851 }
2852
2853 void
2854 Perl_pmop_xmldump(pTHX_ const PMOP *pm)
2855 {
2856     do_pmop_xmldump(0, PL_xmlfp, pm);
2857 }
2858
2859 void
2860 Perl_do_op_xmldump(pTHX_ I32 level, PerlIO *file, const OP *o)
2861 {
2862     UV      seq;
2863     int     contents = 0;
2864     const OPCODE optype = o->op_type;
2865
2866     PERL_ARGS_ASSERT_DO_OP_XMLDUMP;
2867
2868     if (!o)
2869         return;
2870     seq = sequence_num(o);
2871     Perl_xmldump_indent(aTHX_ level, file,
2872         "<op_%s seq=\"%"UVuf" -> ",
2873              OP_NAME(o),
2874                       seq);
2875     level++;
2876     if (o->op_next)
2877         PerlIO_printf(file, seq ? "%"UVuf"\"" : "(%"UVuf")\"",
2878                       sequence_num(o->op_next));
2879     else
2880         PerlIO_printf(file, "DONE\"");
2881
2882     if (o->op_targ) {
2883         if (optype == OP_NULL)
2884         {
2885             PerlIO_printf(file, " was=\"%s\"", PL_op_name[o->op_targ]);
2886             if (o->op_targ == OP_NEXTSTATE)
2887             {
2888                 if (CopLINE(cCOPo))
2889                     PerlIO_printf(file, " line=\"%"UVuf"\"",
2890                                      (UV)CopLINE(cCOPo));
2891                 if (CopSTASHPV(cCOPo))
2892                     PerlIO_printf(file, " package=\"%s\"",
2893                                      CopSTASHPV(cCOPo));
2894                 if (CopLABEL(cCOPo))
2895                     PerlIO_printf(file, " label=\"%s\"",
2896                                      CopLABEL(cCOPo));
2897             }
2898         }
2899         else
2900             PerlIO_printf(file, " targ=\"%ld\"", (long)o->op_targ);
2901     }
2902 #ifdef DUMPADDR
2903     PerlIO_printf(file, " addr=\"0x%"UVxf" => 0x%"UVxf"\"", (UV)o, (UV)o->op_next);
2904 #endif
2905
2906     DUMP_OP_FLAGS(o,1,0,file);
2907     DUMP_OP_PRIVATE(o,1,0,file);
2908
2909     switch (optype) {
2910     case OP_AELEMFAST:
2911         if (o->op_flags & OPf_SPECIAL) {
2912             break;
2913         }
2914     case OP_GVSV:
2915     case OP_GV:
2916 #ifdef USE_ITHREADS
2917         S_xmldump_attr(aTHX_ level, file, "padix=\"%" IVdf "\"", (IV)cPADOPo->op_padix);
2918 #else
2919         if (cSVOPo->op_sv) {
2920             SV * const tmpsv1 = newSVpvn_utf8(NULL, 0, TRUE);
2921             SV * const tmpsv2 = newSVpvn_utf8("", 0, TRUE);
2922             char *s;
2923             STRLEN len;
2924             ENTER;
2925             SAVEFREESV(tmpsv1);
2926             SAVEFREESV(tmpsv2);
2927             gv_fullname3(tmpsv1, MUTABLE_GV(cSVOPo->op_sv), NULL);
2928             s = SvPV(tmpsv1,len);
2929             sv_catxmlpvn(tmpsv2, s, len, 1);
2930             S_xmldump_attr(aTHX_ level, file, "gv=\"%s\"", SvPV(tmpsv2, len));
2931             LEAVE;
2932         }
2933         else
2934             S_xmldump_attr(aTHX_ level, file, "gv=\"NULL\"");
2935 #endif
2936         break;
2937     case OP_CONST:
2938     case OP_HINTSEVAL:
2939     case OP_METHOD_NAMED:
2940 #ifndef USE_ITHREADS
2941         /* with ITHREADS, consts are stored in the pad, and the right pad
2942          * may not be active here, so skip */
2943         S_xmldump_attr(aTHX_ level, file, "%s", sv_xmlpeek(cSVOPo_sv));
2944 #endif
2945         break;
2946     case OP_ANONCODE:
2947         if (!contents) {
2948             contents = 1;
2949             PerlIO_printf(file, ">\n");
2950         }
2951         do_op_xmldump(level+1, file, CvROOT(cSVOPo_sv));
2952         break;
2953     case OP_NEXTSTATE:
2954     case OP_DBSTATE:
2955         if (CopLINE(cCOPo))
2956             S_xmldump_attr(aTHX_ level, file, "line=\"%"UVuf"\"",
2957                              (UV)CopLINE(cCOPo));
2958         if (CopSTASHPV(cCOPo))
2959             S_xmldump_attr(aTHX_ level, file, "package=\"%s\"",
2960                              CopSTASHPV(cCOPo));
2961         if (CopLABEL(cCOPo))
2962             S_xmldump_attr(aTHX_ level, file, "label=\"%s\"",
2963                              CopLABEL(cCOPo));
2964         break;
2965     case OP_ENTERLOOP:
2966         S_xmldump_attr(aTHX_ level, file, "redo=\"");
2967         if (cLOOPo->op_redoop)
2968             PerlIO_printf(file, "%"UVuf"\"", sequence_num(cLOOPo->op_redoop));
2969         else
2970             PerlIO_printf(file, "DONE\"");
2971         S_xmldump_attr(aTHX_ level, file, "next=\"");
2972         if (cLOOPo->op_nextop)
2973             PerlIO_printf(file, "%"UVuf"\"", sequence_num(cLOOPo->op_nextop));
2974         else
2975             PerlIO_printf(file, "DONE\"");
2976         S_xmldump_attr(aTHX_ level, file, "last=\"");
2977         if (cLOOPo->op_lastop)
2978             PerlIO_printf(file, "%"UVuf"\"", sequence_num(cLOOPo->op_lastop));
2979         else
2980             PerlIO_printf(file, "DONE\"");
2981         break;
2982     case OP_COND_EXPR:
2983     case OP_RANGE:
2984     case OP_MAPWHILE:
2985     case OP_GREPWHILE:
2986     case OP_OR:
2987     case OP_AND:
2988         S_xmldump_attr(aTHX_ level, file, "other=\"");
2989         if (cLOGOPo->op_other)
2990             PerlIO_printf(file, "%"UVuf"\"", sequence_num(cLOGOPo->op_other));
2991         else
2992             PerlIO_printf(file, "DONE\"");
2993         break;
2994     case OP_LEAVE:
2995     case OP_LEAVEEVAL:
2996     case OP_LEAVESUB:
2997     case OP_LEAVESUBLV:
2998     case OP_LEAVEWRITE:
2999     case OP_SCOPE:
3000         if (o->op_private & OPpREFCOUNTED)
3001             S_xmldump_attr(aTHX_ level, file, "refcnt=\"%"UVuf"\"", (UV)o->op_targ);
3002         break;
3003     default:
3004         break;
3005     }
3006
3007     if (PL_madskills && o->op_madprop) {
3008         char prevkey = '\0';
3009         SV * const tmpsv = newSVpvn_utf8("", 0, TRUE);
3010         const MADPROP* mp = o->op_madprop;
3011
3012         if (!contents) {
3013             contents = 1;
3014             PerlIO_printf(file, ">\n");
3015         }
3016         Perl_xmldump_indent(aTHX_ level, file, "<madprops>\n");
3017         level++;
3018         while (mp) {
3019             char tmp = mp->mad_key;
3020             sv_setpvs(tmpsv,"\"");
3021             if (tmp)
3022                 sv_catxmlpvn(tmpsv, &tmp, 1, 0);
3023             if ((tmp == '_') || (tmp == '#')) /* '_' '#' whitespace belong to the previous token. */
3024                 sv_catxmlpvn(tmpsv, &prevkey, 1, 0);
3025             else
3026                 prevkey = tmp;
3027             sv_catpv(tmpsv, "\"");
3028             switch (mp->mad_type) {
3029             case MAD_NULL:
3030                 sv_catpv(tmpsv, "NULL");
3031                 Perl_xmldump_indent(aTHX_ level, file, "<mad_null key=%s/>\n", SvPVX(tmpsv));
3032                 break;
3033             case MAD_PV:
3034                 sv_catpv(tmpsv, " val=\"");
3035                 sv_catxmlpvn(tmpsv, (char*)mp->mad_val, mp->mad_vlen,1);
3036                 sv_catpv(tmpsv, "\"");
3037                 Perl_xmldump_indent(aTHX_ level, file, "<mad_pv key=%s/>\n", SvPVX(tmpsv));
3038                 break;
3039             case MAD_SV:
3040                 sv_catpv(tmpsv, " val=\"");
3041                 sv_catxmlsv(tmpsv, MUTABLE_SV(mp->mad_val));
3042                 sv_catpv(tmpsv, "\"");
3043                 Perl_xmldump_indent(aTHX_ level, file, "<mad_sv key=%s/>\n", SvPVX(tmpsv));
3044                 break;
3045             case MAD_OP:
3046                 if ((OP*)mp->mad_val) {
3047                     Perl_xmldump_indent(aTHX_ level, file, "<mad_op key=%s>\n", SvPVX(tmpsv));
3048                     do_op_xmldump(level+1, file, (OP*)mp->mad_val);
3049                     Perl_xmldump_indent(aTHX_ level, file, "</mad_op>\n");
3050                 }
3051                 break;
3052             default:
3053                 Perl_xmldump_indent(aTHX_ level, file, "<mad_unk key=%s/>\n", SvPVX(tmpsv));
3054                 break;
3055             }
3056             mp = mp->mad_next;
3057         }
3058         level--;
3059         Perl_xmldump_indent(aTHX_ level, file, "</madprops>\n");
3060
3061         SvREFCNT_dec_NN(tmpsv);
3062     }
3063
3064     switch (optype) {
3065     case OP_PUSHRE:
3066     case OP_MATCH:
3067     case OP_QR:
3068     case OP_SUBST:
3069         if (!contents) {
3070             contents = 1;
3071             PerlIO_printf(file, ">\n");
3072         }
3073         do_pmop_xmldump(level, file, cPMOPo);
3074         break;
3075     default:
3076         break;
3077     }
3078
3079     if (o->op_flags & OPf_KIDS) {
3080         OP *kid;
3081         if (!contents) {
3082             contents = 1;
3083             PerlIO_printf(file, ">\n");
3084         }
3085         for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling)
3086             do_op_xmldump(level, file, kid);
3087     }
3088
3089     if (contents)
3090         Perl_xmldump_indent(aTHX_ level-1, file, "</op_%s>\n", OP_NAME(o));
3091     else
3092         PerlIO_printf(file, " />\n");
3093 }
3094
3095 void
3096 Perl_op_xmldump(pTHX_ const OP *o)
3097 {
3098     PERL_ARGS_ASSERT_OP_XMLDUMP;
3099
3100     do_op_xmldump(0, PL_xmlfp, o);
3101 }
3102 #endif
3103
3104 /*
3105  * Local variables:
3106  * c-indentation-style: bsd
3107  * c-basic-offset: 4
3108  * indent-tabs-mode: nil
3109  * End:
3110  *
3111  * ex: set ts=8 sts=4 sw=4 et:
3112  */