rework split() special case interaction with regex engine
[perl.git] / 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             flags = r->compflags;
2099             sv_setpv(d,"");
2100             append_flags(d, flags, regexp_flags_names);
2101             if (*(SvEND(d) - 1) == ',') {
2102                 SvCUR_set(d, SvCUR(d) - 1);
2103                 SvPVX(d)[SvCUR(d)] = '\0';
2104             }
2105             Perl_dump_indent(aTHX_ level, file, "  COMPFLAGS = 0x%"UVxf" (%s)\n",
2106                                 (UV)(r->compflags), SvPVX_const(d));
2107
2108             flags = r->extflags;
2109             sv_setpv(d,"");
2110             append_flags(d, flags, regexp_flags_names);
2111             if (*(SvEND(d) - 1) == ',') {
2112                 SvCUR_set(d, SvCUR(d) - 1);
2113                 SvPVX(d)[SvCUR(d)] = '\0';
2114             }
2115             Perl_dump_indent(aTHX_ level, file, "  EXTFLAGS = 0x%"UVxf" (%s)\n",
2116                                 (UV)(r->extflags), SvPVX_const(d));
2117
2118             Perl_dump_indent(aTHX_ level, file, "  INTFLAGS = 0x%"UVxf"\n",
2119                                 (UV)(r->intflags));
2120             Perl_dump_indent(aTHX_ level, file, "  NPARENS = %"UVuf"\n",
2121                                 (UV)(r->nparens));
2122             Perl_dump_indent(aTHX_ level, file, "  LASTPAREN = %"UVuf"\n",
2123                                 (UV)(r->lastparen));
2124             Perl_dump_indent(aTHX_ level, file, "  LASTCLOSEPAREN = %"UVuf"\n",
2125                                 (UV)(r->lastcloseparen));
2126             Perl_dump_indent(aTHX_ level, file, "  MINLEN = %"IVdf"\n",
2127                                 (IV)(r->minlen));
2128             Perl_dump_indent(aTHX_ level, file, "  MINLENRET = %"IVdf"\n",
2129                                 (IV)(r->minlenret));
2130             Perl_dump_indent(aTHX_ level, file, "  GOFS = %"UVuf"\n",
2131                                 (UV)(r->gofs));
2132             Perl_dump_indent(aTHX_ level, file, "  PRE_PREFIX = %"UVuf"\n",
2133                                 (UV)(r->pre_prefix));
2134             Perl_dump_indent(aTHX_ level, file, "  SUBLEN = %"IVdf"\n",
2135                                 (IV)(r->sublen));
2136             Perl_dump_indent(aTHX_ level, file, "  SUBOFFSET = %"IVdf"\n",
2137                                 (IV)(r->suboffset));
2138             Perl_dump_indent(aTHX_ level, file, "  SUBCOFFSET = %"IVdf"\n",
2139                                 (IV)(r->subcoffset));
2140             if (r->subbeg)
2141                 Perl_dump_indent(aTHX_ level, file, "  SUBBEG = 0x%"UVxf" %s\n",
2142                             PTR2UV(r->subbeg),
2143                             pv_display(d, r->subbeg, r->sublen, 50, pvlim));
2144             else
2145                 Perl_dump_indent(aTHX_ level, file, "  SUBBEG = 0x0\n");
2146             Perl_dump_indent(aTHX_ level, file, "  ENGINE = 0x%"UVxf"\n",
2147                                 PTR2UV(r->engine));
2148             Perl_dump_indent(aTHX_ level, file, "  MOTHER_RE = 0x%"UVxf"\n",
2149                                 PTR2UV(r->mother_re));
2150             Perl_dump_indent(aTHX_ level, file, "  PAREN_NAMES = 0x%"UVxf"\n",
2151                                 PTR2UV(r->paren_names));
2152             Perl_dump_indent(aTHX_ level, file, "  SUBSTRS = 0x%"UVxf"\n",
2153                                 PTR2UV(r->substrs));
2154             Perl_dump_indent(aTHX_ level, file, "  PPRIVATE = 0x%"UVxf"\n",
2155                                 PTR2UV(r->pprivate));
2156             Perl_dump_indent(aTHX_ level, file, "  OFFS = 0x%"UVxf"\n",
2157                                 PTR2UV(r->offs));
2158             Perl_dump_indent(aTHX_ level, file, "  QR_ANONCV = 0x%"UVxf"\n",
2159                                 PTR2UV(r->qr_anoncv));
2160 #ifdef PERL_ANY_COW
2161             Perl_dump_indent(aTHX_ level, file, "  SAVED_COPY = 0x%"UVxf"\n",
2162                                 PTR2UV(r->saved_copy));
2163 #endif
2164         }
2165         break;
2166     }
2167     SvREFCNT_dec_NN(d);
2168 }
2169
2170 void
2171 Perl_sv_dump(pTHX_ SV *sv)
2172 {
2173     dVAR;
2174
2175     PERL_ARGS_ASSERT_SV_DUMP;
2176
2177     if (SvROK(sv))
2178         do_sv_dump(0, Perl_debug_log, sv, 0, 4, 0, 0);
2179     else
2180         do_sv_dump(0, Perl_debug_log, sv, 0, 0, 0, 0);
2181 }
2182
2183 int
2184 Perl_runops_debug(pTHX)
2185 {
2186     dVAR;
2187     if (!PL_op) {
2188         Perl_ck_warner_d(aTHX_ packWARN(WARN_DEBUGGING), "NULL OP IN RUN");
2189         return 0;
2190     }
2191
2192     DEBUG_l(Perl_deb(aTHX_ "Entering new RUNOPS level\n"));
2193     do {
2194         if (PL_debug) {
2195             if (PL_watchaddr && (*PL_watchaddr != PL_watchok))
2196                 PerlIO_printf(Perl_debug_log,
2197                               "WARNING: %"UVxf" changed from %"UVxf" to %"UVxf"\n",
2198                               PTR2UV(PL_watchaddr), PTR2UV(PL_watchok),
2199                               PTR2UV(*PL_watchaddr));
2200             if (DEBUG_s_TEST_) {
2201                 if (DEBUG_v_TEST_) {
2202                     PerlIO_printf(Perl_debug_log, "\n");
2203                     deb_stack_all();
2204                 }
2205                 else
2206                     debstack();
2207             }
2208
2209
2210             if (DEBUG_t_TEST_) debop(PL_op);
2211             if (DEBUG_P_TEST_) debprof(PL_op);
2212         }
2213
2214         OP_ENTRY_PROBE(OP_NAME(PL_op));
2215     } while ((PL_op = PL_op->op_ppaddr(aTHX)));
2216     DEBUG_l(Perl_deb(aTHX_ "leaving RUNOPS level\n"));
2217
2218     TAINT_NOT;
2219     return 0;
2220 }
2221
2222 I32
2223 Perl_debop(pTHX_ const OP *o)
2224 {
2225     dVAR;
2226
2227     PERL_ARGS_ASSERT_DEBOP;
2228
2229     if (CopSTASH_eq(PL_curcop, PL_debstash) && !DEBUG_J_TEST_)
2230         return 0;
2231
2232     Perl_deb(aTHX_ "%s", OP_NAME(o));
2233     switch (o->op_type) {
2234     case OP_CONST:
2235     case OP_HINTSEVAL:
2236         /* With ITHREADS, consts are stored in the pad, and the right pad
2237          * may not be active here, so check.
2238          * Looks like only during compiling the pads are illegal.
2239          */
2240 #ifdef USE_ITHREADS
2241         if ((((SVOP*)o)->op_sv) || !IN_PERL_COMPILETIME)
2242 #endif
2243             PerlIO_printf(Perl_debug_log, "(%s)", SvPEEK(cSVOPo_sv));
2244         break;
2245     case OP_GVSV:
2246     case OP_GV:
2247         if (cGVOPo_gv) {
2248             SV * const sv = newSV(0);
2249 #ifdef PERL_MAD
2250             /* FIXME - is this making unwarranted assumptions about the
2251                UTF-8 cleanliness of the dump file handle?  */
2252             SvUTF8_on(sv);
2253 #endif
2254             gv_fullname3(sv, cGVOPo_gv, NULL);
2255             PerlIO_printf(Perl_debug_log, "(%s)", SvPV_nolen_const(sv));
2256             SvREFCNT_dec_NN(sv);
2257         }
2258         else
2259             PerlIO_printf(Perl_debug_log, "(NULL)");
2260         break;
2261
2262     {
2263         int count;
2264
2265     case OP_PADSV:
2266     case OP_PADAV:
2267     case OP_PADHV:
2268         count = 1;
2269         goto dump_padop;
2270     case OP_PADRANGE:
2271         count = o->op_private & OPpPADRANGE_COUNTMASK;
2272     dump_padop:
2273         /* print the lexical's name */
2274         {
2275             CV * const cv = deb_curcv(cxstack_ix);
2276             SV *sv;
2277             PAD * comppad = NULL;
2278             int i;
2279
2280             if (cv) {
2281                 PADLIST * const padlist = CvPADLIST(cv);
2282                 comppad = *PadlistARRAY(padlist);
2283             }
2284             PerlIO_printf(Perl_debug_log, "(");
2285             for (i = 0; i < count; i++) {
2286                 if (comppad &&
2287                         (sv = *av_fetch(comppad, o->op_targ + i, FALSE)))
2288                     PerlIO_printf(Perl_debug_log, "%s", SvPV_nolen_const(sv));
2289                 else
2290                     PerlIO_printf(Perl_debug_log, "[%"UVuf"]",
2291                             (UV)o->op_targ+i);
2292                 if (i < count-1)
2293                     PerlIO_printf(Perl_debug_log, ",");
2294             }
2295             PerlIO_printf(Perl_debug_log, ")");
2296         }
2297         break;
2298     }
2299
2300     default:
2301         break;
2302     }
2303     PerlIO_printf(Perl_debug_log, "\n");
2304     return 0;
2305 }
2306
2307 STATIC CV*
2308 S_deb_curcv(pTHX_ const I32 ix)
2309 {
2310     dVAR;
2311     const PERL_CONTEXT * const cx = &cxstack[ix];
2312     if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT)
2313         return cx->blk_sub.cv;
2314     else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
2315         return cx->blk_eval.cv;
2316     else if (ix == 0 && PL_curstackinfo->si_type == PERLSI_MAIN)
2317         return PL_main_cv;
2318     else if (ix <= 0)
2319         return NULL;
2320     else
2321         return deb_curcv(ix - 1);
2322 }
2323
2324 void
2325 Perl_watch(pTHX_ char **addr)
2326 {
2327     dVAR;
2328
2329     PERL_ARGS_ASSERT_WATCH;
2330
2331     PL_watchaddr = addr;
2332     PL_watchok = *addr;
2333     PerlIO_printf(Perl_debug_log, "WATCHING, %"UVxf" is currently %"UVxf"\n",
2334         PTR2UV(PL_watchaddr), PTR2UV(PL_watchok));
2335 }
2336
2337 STATIC void
2338 S_debprof(pTHX_ const OP *o)
2339 {
2340     dVAR;
2341
2342     PERL_ARGS_ASSERT_DEBPROF;
2343
2344     if (!DEBUG_J_TEST_ && CopSTASH_eq(PL_curcop, PL_debstash))
2345         return;
2346     if (!PL_profiledata)
2347         Newxz(PL_profiledata, MAXO, U32);
2348     ++PL_profiledata[o->op_type];
2349 }
2350
2351 void
2352 Perl_debprofdump(pTHX)
2353 {
2354     dVAR;
2355     unsigned i;
2356     if (!PL_profiledata)
2357         return;
2358     for (i = 0; i < MAXO; i++) {
2359         if (PL_profiledata[i])
2360             PerlIO_printf(Perl_debug_log,
2361                           "%5lu %s\n", (unsigned long)PL_profiledata[i],
2362                                        PL_op_name[i]);
2363     }
2364 }
2365
2366 #ifdef PERL_MAD
2367 /*
2368  *    XML variants of most of the above routines
2369  */
2370
2371 STATIC void
2372 S_xmldump_attr(pTHX_ I32 level, PerlIO *file, const char* pat, ...)
2373 {
2374     va_list args;
2375
2376     PERL_ARGS_ASSERT_XMLDUMP_ATTR;
2377
2378     PerlIO_printf(file, "\n    ");
2379     va_start(args, pat);
2380     xmldump_vindent(level, file, pat, &args);
2381     va_end(args);
2382 }
2383
2384
2385 void
2386 Perl_xmldump_indent(pTHX_ I32 level, PerlIO *file, const char* pat, ...)
2387 {
2388     va_list args;
2389     PERL_ARGS_ASSERT_XMLDUMP_INDENT;
2390     va_start(args, pat);
2391     xmldump_vindent(level, file, pat, &args);
2392     va_end(args);
2393 }
2394
2395 void
2396 Perl_xmldump_vindent(pTHX_ I32 level, PerlIO *file, const char* pat, va_list *args)
2397 {
2398     PERL_ARGS_ASSERT_XMLDUMP_VINDENT;
2399
2400     PerlIO_printf(file, "%*s", (int)(level*PL_dumpindent), "");
2401     PerlIO_vprintf(file, pat, *args);
2402 }
2403
2404 void
2405 Perl_xmldump_all(pTHX)
2406 {
2407     xmldump_all_perl(FALSE);
2408 }
2409
2410 void
2411 Perl_xmldump_all_perl(pTHX_ bool justperl PERL_UNUSED_DECL)
2412 {
2413     PerlIO_setlinebuf(PL_xmlfp);
2414     if (PL_main_root)
2415         op_xmldump(PL_main_root);
2416     /* someday we might call this, when it outputs XML: */
2417     /* xmldump_packsubs_perl(PL_defstash, justperl); */
2418     if (PL_xmlfp != (PerlIO*)PerlIO_stdout())
2419         PerlIO_close(PL_xmlfp);
2420     PL_xmlfp = 0;
2421 }
2422
2423 void
2424 Perl_xmldump_packsubs(pTHX_ const HV *stash)
2425 {
2426     PERL_ARGS_ASSERT_XMLDUMP_PACKSUBS;
2427     xmldump_packsubs_perl(stash, FALSE);
2428 }
2429
2430 void
2431 Perl_xmldump_packsubs_perl(pTHX_ const HV *stash, bool justperl)
2432 {
2433     I32 i;
2434     HE  *entry;
2435
2436     PERL_ARGS_ASSERT_XMLDUMP_PACKSUBS_PERL;
2437
2438     if (!HvARRAY(stash))
2439         return;
2440     for (i = 0; i <= (I32) HvMAX(stash); i++) {
2441         for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
2442             GV *gv = MUTABLE_GV(HeVAL(entry));
2443             HV *hv;
2444             if (SvTYPE(gv) != SVt_PVGV || !GvGP(gv))
2445                 continue;
2446             if (GvCVu(gv))
2447                 xmldump_sub_perl(gv, justperl);
2448             if (GvFORM(gv))
2449                 xmldump_form(gv);
2450             if (HeKEY(entry)[HeKLEN(entry)-1] == ':'
2451                 && (hv = GvHV(gv)) && hv != PL_defstash)
2452                 xmldump_packsubs_perl(hv, justperl);    /* nested package */
2453         }
2454     }
2455 }
2456
2457 void
2458 Perl_xmldump_sub(pTHX_ const GV *gv)
2459 {
2460     PERL_ARGS_ASSERT_XMLDUMP_SUB;
2461     xmldump_sub_perl(gv, FALSE);
2462 }
2463
2464 void
2465 Perl_xmldump_sub_perl(pTHX_ const GV *gv, bool justperl)
2466 {
2467     SV * sv;
2468
2469     PERL_ARGS_ASSERT_XMLDUMP_SUB_PERL;
2470
2471     if (justperl && (CvISXSUB(GvCV(gv)) || !CvROOT(GvCV(gv))))
2472         return;
2473
2474     sv = sv_newmortal();
2475     gv_fullname3(sv, gv, NULL);
2476     Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "\nSUB %s = ", SvPVX(sv));
2477     if (CvXSUB(GvCV(gv)))
2478         Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "(xsub 0x%"UVxf" %d)\n",
2479             PTR2UV(CvXSUB(GvCV(gv))),
2480             (int)CvXSUBANY(GvCV(gv)).any_i32);
2481     else if (CvROOT(GvCV(gv)))
2482         op_xmldump(CvROOT(GvCV(gv)));
2483     else
2484         Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "<undef>\n");
2485 }
2486
2487 void
2488 Perl_xmldump_form(pTHX_ const GV *gv)
2489 {
2490     SV * const sv = sv_newmortal();
2491
2492     PERL_ARGS_ASSERT_XMLDUMP_FORM;
2493
2494     gv_fullname3(sv, gv, NULL);
2495     Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "\nFORMAT %s = ", SvPVX(sv));
2496     if (CvROOT(GvFORM(gv)))
2497         op_xmldump(CvROOT(GvFORM(gv)));
2498     else
2499         Perl_xmldump_indent(aTHX_ 0, PL_xmlfp, "<undef>\n");
2500 }
2501
2502 void
2503 Perl_xmldump_eval(pTHX)
2504 {
2505     op_xmldump(PL_eval_root);
2506 }
2507
2508 char *
2509 Perl_sv_catxmlsv(pTHX_ SV *dsv, SV *ssv)
2510 {
2511     PERL_ARGS_ASSERT_SV_CATXMLSV;
2512     return sv_catxmlpvn(dsv, SvPVX(ssv), SvCUR(ssv), SvUTF8(ssv));
2513 }
2514
2515 char *
2516 Perl_sv_catxmlpv(pTHX_ SV *dsv, const char *pv, int utf8)
2517 {
2518     PERL_ARGS_ASSERT_SV_CATXMLPV;
2519     return sv_catxmlpvn(dsv, pv, strlen(pv), utf8);
2520 }
2521
2522 char *
2523 Perl_sv_catxmlpvn(pTHX_ SV *dsv, const char *pv, STRLEN len, int utf8)
2524 {
2525     unsigned int c;
2526     const char * const e = pv + len;
2527     const char * const start = pv;
2528     STRLEN dsvcur;
2529     STRLEN cl;
2530
2531     PERL_ARGS_ASSERT_SV_CATXMLPVN;
2532
2533     sv_catpvs(dsv,"");
2534     dsvcur = SvCUR(dsv);        /* in case we have to restart */
2535
2536   retry:
2537     while (pv < e) {
2538         if (utf8) {
2539             c = utf8_to_uvchr_buf((U8*)pv, (U8*)e, &cl);
2540             if (cl == 0) {
2541                 SvCUR(dsv) = dsvcur;
2542                 pv = start;
2543                 utf8 = 0;
2544                 goto retry;
2545             }
2546         }
2547         else
2548             c = (*pv & 255);
2549
2550         switch (c) {
2551         case 0x00:
2552         case 0x01:
2553         case 0x02:
2554         case 0x03:
2555         case 0x04:
2556         case 0x05:
2557         case 0x06:
2558         case 0x07:
2559         case 0x08:
2560         case 0x0b:
2561         case 0x0c:
2562         case 0x0e:
2563         case 0x0f:
2564         case 0x10:
2565         case 0x11:
2566         case 0x12:
2567         case 0x13:
2568         case 0x14:
2569         case 0x15:
2570         case 0x16:
2571         case 0x17:
2572         case 0x18:
2573         case 0x19:
2574         case 0x1a:
2575         case 0x1b:
2576         case 0x1c:
2577         case 0x1d:
2578         case 0x1e:
2579         case 0x1f:
2580         case 0x7f:
2581         case 0x80:
2582         case 0x81:
2583         case 0x82:
2584         case 0x83:
2585         case 0x84:
2586         case 0x86:
2587         case 0x87:
2588         case 0x88:
2589         case 0x89:
2590         case 0x90:
2591         case 0x91:
2592         case 0x92:
2593         case 0x93:
2594         case 0x94:
2595         case 0x95:
2596         case 0x96:
2597         case 0x97:
2598         case 0x98:
2599         case 0x99:
2600         case 0x9a:
2601         case 0x9b:
2602         case 0x9c:
2603         case 0x9d:
2604         case 0x9e:
2605         case 0x9f:
2606             Perl_sv_catpvf(aTHX_ dsv, "STUPIDXML(#x%X)", c);
2607             break;
2608         case '<':
2609             sv_catpvs(dsv, "&lt;");
2610             break;
2611         case '>':
2612             sv_catpvs(dsv, "&gt;");
2613             break;
2614         case '&':
2615             sv_catpvs(dsv, "&amp;");
2616             break;
2617         case '"':
2618             sv_catpvs(dsv, "&#34;");
2619             break;
2620         default:
2621             if (c < 0xD800) {
2622                 if (c < 32 || c > 127) {
2623                     Perl_sv_catpvf(aTHX_ dsv, "&#x%X;", c);
2624                 }
2625                 else {
2626                     const char string = (char) c;
2627                     sv_catpvn(dsv, &string, 1);
2628                 }
2629                 break;
2630             }
2631             if ((c >= 0xD800 && c <= 0xDB7F) ||
2632                 (c >= 0xDC00 && c <= 0xDFFF) ||
2633                 (c >= 0xFFF0 && c <= 0xFFFF) ||
2634                  c > 0x10ffff)
2635                 Perl_sv_catpvf(aTHX_ dsv, "STUPIDXML(#x%X)", c);
2636             else
2637                 Perl_sv_catpvf(aTHX_ dsv, "&#x%X;", c);
2638         }
2639
2640         if (utf8)
2641             pv += UTF8SKIP(pv);
2642         else
2643             pv++;
2644     }
2645
2646     return SvPVX(dsv);
2647 }
2648
2649 char *
2650 Perl_sv_xmlpeek(pTHX_ SV *sv)
2651 {
2652     SV * const t = sv_newmortal();
2653     STRLEN n_a;
2654     int unref = 0;
2655
2656     PERL_ARGS_ASSERT_SV_XMLPEEK;
2657
2658     sv_utf8_upgrade(t);
2659     sv_setpvs(t, "");
2660     /* retry: */
2661     if (!sv) {
2662         sv_catpv(t, "VOID=\"\"");
2663         goto finish;
2664     }
2665     else if (sv == (const SV *)0x55555555 || SvTYPE(sv) == 'U') {
2666         sv_catpv(t, "WILD=\"\"");
2667         goto finish;
2668     }
2669     else if (sv == &PL_sv_undef || sv == &PL_sv_no || sv == &PL_sv_yes || sv == &PL_sv_placeholder) {
2670         if (sv == &PL_sv_undef) {
2671             sv_catpv(t, "SV_UNDEF=\"1\"");
2672             if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
2673                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
2674                 SvREADONLY(sv))
2675                 goto finish;
2676         }
2677         else if (sv == &PL_sv_no) {
2678             sv_catpv(t, "SV_NO=\"1\"");
2679             if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
2680                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
2681                 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
2682                                   SVp_POK|SVp_NOK)) &&
2683                 SvCUR(sv) == 0 &&
2684                 SvNVX(sv) == 0.0)
2685                 goto finish;
2686         }
2687         else if (sv == &PL_sv_yes) {
2688             sv_catpv(t, "SV_YES=\"1\"");
2689             if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
2690                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
2691                 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
2692                                   SVp_POK|SVp_NOK)) &&
2693                 SvCUR(sv) == 1 &&
2694                 SvPVX(sv) && *SvPVX(sv) == '1' &&
2695                 SvNVX(sv) == 1.0)
2696                 goto finish;
2697         }
2698         else {
2699             sv_catpv(t, "SV_PLACEHOLDER=\"1\"");
2700             if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
2701                                  SVs_GMG|SVs_SMG|SVs_RMG)) &&
2702                 SvREADONLY(sv))
2703                 goto finish;
2704         }
2705         sv_catpv(t, " XXX=\"\" ");
2706     }
2707     else if (SvREFCNT(sv) == 0) {
2708         sv_catpv(t, " refcnt=\"0\"");
2709         unref++;
2710     }
2711     else if (DEBUG_R_TEST_) {
2712         int is_tmp = 0;
2713         I32 ix;
2714         /* is this SV on the tmps stack? */
2715         for (ix=PL_tmps_ix; ix>=0; ix--) {
2716             if (PL_tmps_stack[ix] == sv) {
2717                 is_tmp = 1;
2718                 break;
2719             }
2720         }
2721         if (SvREFCNT(sv) > 1)
2722             Perl_sv_catpvf(aTHX_ t, " DRT=\"<%"UVuf"%s>\"", (UV)SvREFCNT(sv),
2723                     is_tmp ? "T" : "");
2724         else if (is_tmp)
2725             sv_catpv(t, " DRT=\"<T>\"");
2726     }
2727
2728     if (SvROK(sv)) {
2729         sv_catpv(t, " ROK=\"\"");
2730     }
2731     switch (SvTYPE(sv)) {
2732     default:
2733         sv_catpv(t, " FREED=\"1\"");
2734         goto finish;
2735
2736     case SVt_NULL:
2737         sv_catpv(t, " UNDEF=\"1\"");
2738         goto finish;
2739     case SVt_IV:
2740         sv_catpv(t, " IV=\"");
2741         break;
2742     case SVt_NV:
2743         sv_catpv(t, " NV=\"");
2744         break;
2745     case SVt_PV:
2746         sv_catpv(t, " PV=\"");
2747         break;
2748     case SVt_PVIV:
2749         sv_catpv(t, " PVIV=\"");
2750         break;
2751     case SVt_PVNV:
2752         sv_catpv(t, " PVNV=\"");
2753         break;
2754     case SVt_PVMG:
2755         sv_catpv(t, " PVMG=\"");
2756         break;
2757     case SVt_PVLV:
2758         sv_catpv(t, " PVLV=\"");
2759         break;
2760     case SVt_PVAV:
2761         sv_catpv(t, " AV=\"");
2762         break;
2763     case SVt_PVHV:
2764         sv_catpv(t, " HV=\"");
2765         break;
2766     case SVt_PVCV:
2767         if (CvGV(sv))
2768             Perl_sv_catpvf(aTHX_ t, " CV=\"(%s)\"", GvNAME(CvGV(sv)));
2769         else
2770             sv_catpv(t, " CV=\"()\"");
2771         goto finish;
2772     case SVt_PVGV:
2773         sv_catpv(t, " GV=\"");
2774         break;
2775     case SVt_BIND:
2776         sv_catpv(t, " BIND=\"");
2777         break;
2778     case SVt_REGEXP:
2779         sv_catpv(t, " REGEXP=\"");
2780         break;
2781     case SVt_PVFM:
2782         sv_catpv(t, " FM=\"");
2783         break;
2784     case SVt_PVIO:
2785         sv_catpv(t, " IO=\"");
2786         break;
2787     }
2788
2789     if (SvPOKp(sv)) {
2790         if (SvPVX(sv)) {
2791             sv_catxmlsv(t, sv);
2792         }
2793     }
2794     else if (SvNOKp(sv)) {
2795         STORE_NUMERIC_LOCAL_SET_STANDARD();
2796         Perl_sv_catpvf(aTHX_ t, "%"NVgf"",SvNVX(sv));
2797         RESTORE_NUMERIC_LOCAL();
2798     }
2799     else if (SvIOKp(sv)) {
2800         if (SvIsUV(sv))
2801             Perl_sv_catpvf(aTHX_ t, "%"UVuf"", (UV)SvUVX(sv));
2802         else
2803             Perl_sv_catpvf(aTHX_ t, "%"IVdf"", (IV)SvIVX(sv));
2804     }
2805     else
2806         sv_catpv(t, "");
2807     sv_catpv(t, "\"");
2808
2809   finish:
2810     while (unref--)
2811         sv_catpv(t, ")");
2812     return SvPV(t, n_a);
2813 }
2814
2815 void
2816 Perl_do_pmop_xmldump(pTHX_ I32 level, PerlIO *file, const PMOP *pm)
2817 {
2818     PERL_ARGS_ASSERT_DO_PMOP_XMLDUMP;
2819
2820     if (!pm) {
2821         Perl_xmldump_indent(aTHX_ level, file, "<pmop/>\n");
2822         return;
2823     }
2824     Perl_xmldump_indent(aTHX_ level, file, "<pmop \n");
2825     level++;
2826     if (PM_GETRE(pm)) {
2827         REGEXP *const r = PM_GETRE(pm);
2828         SV * const tmpsv = newSVpvn_utf8("", 0, TRUE);
2829         sv_catxmlsv(tmpsv, MUTABLE_SV(r));
2830         Perl_xmldump_indent(aTHX_ level, file, "pre=\"%s\"\n",
2831              SvPVX(tmpsv));
2832         SvREFCNT_dec_NN(tmpsv);
2833         Perl_xmldump_indent(aTHX_ level, file, "when=\"%s\"\n",
2834              (pm->op_private & OPpRUNTIME) ? "RUN" : "COMP");
2835     }
2836     else
2837         Perl_xmldump_indent(aTHX_ level, file, "pre=\"\" when=\"RUN\"\n");
2838     if (pm->op_pmflags || (PM_GETRE(pm) && RX_CHECK_SUBSTR(PM_GETRE(pm)))) {
2839         SV * const tmpsv = pm_description(pm);
2840         Perl_xmldump_indent(aTHX_ level, file, "pmflags=\"%s\"\n", SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");
2841         SvREFCNT_dec_NN(tmpsv);
2842     }
2843
2844     level--;
2845     if (pm->op_type != OP_PUSHRE && pm->op_pmreplrootu.op_pmreplroot) {
2846         Perl_xmldump_indent(aTHX_ level, file, ">\n");
2847         Perl_xmldump_indent(aTHX_ level+1, file, "<pm_repl>\n");
2848         do_op_xmldump(level+2, file, pm->op_pmreplrootu.op_pmreplroot);
2849         Perl_xmldump_indent(aTHX_ level+1, file, "</pm_repl>\n");
2850         Perl_xmldump_indent(aTHX_ level, file, "</pmop>\n");
2851     }
2852     else
2853         Perl_xmldump_indent(aTHX_ level, file, "/>\n");
2854 }
2855
2856 void
2857 Perl_pmop_xmldump(pTHX_ const PMOP *pm)
2858 {
2859     do_pmop_xmldump(0, PL_xmlfp, pm);
2860 }
2861
2862 void
2863 Perl_do_op_xmldump(pTHX_ I32 level, PerlIO *file, const OP *o)
2864 {
2865     UV      seq;
2866     int     contents = 0;
2867     const OPCODE optype = o->op_type;
2868
2869     PERL_ARGS_ASSERT_DO_OP_XMLDUMP;
2870
2871     if (!o)
2872         return;
2873     seq = sequence_num(o);
2874     Perl_xmldump_indent(aTHX_ level, file,
2875         "<op_%s seq=\"%"UVuf" -> ",
2876              OP_NAME(o),
2877                       seq);
2878     level++;
2879     if (o->op_next)
2880         PerlIO_printf(file, seq ? "%"UVuf"\"" : "(%"UVuf")\"",
2881                       sequence_num(o->op_next));
2882     else
2883         PerlIO_printf(file, "DONE\"");
2884
2885     if (o->op_targ) {
2886         if (optype == OP_NULL)
2887         {
2888             PerlIO_printf(file, " was=\"%s\"", PL_op_name[o->op_targ]);
2889             if (o->op_targ == OP_NEXTSTATE)
2890             {
2891                 if (CopLINE(cCOPo))
2892                     PerlIO_printf(file, " line=\"%"UVuf"\"",
2893                                      (UV)CopLINE(cCOPo));
2894                 if (CopSTASHPV(cCOPo))
2895                     PerlIO_printf(file, " package=\"%s\"",
2896                                      CopSTASHPV(cCOPo));
2897                 if (CopLABEL(cCOPo))
2898                     PerlIO_printf(file, " label=\"%s\"",
2899                                      CopLABEL(cCOPo));
2900             }
2901         }
2902         else
2903             PerlIO_printf(file, " targ=\"%ld\"", (long)o->op_targ);
2904     }
2905 #ifdef DUMPADDR
2906     PerlIO_printf(file, " addr=\"0x%"UVxf" => 0x%"UVxf"\"", (UV)o, (UV)o->op_next);
2907 #endif
2908
2909     DUMP_OP_FLAGS(o,1,0,file);
2910     DUMP_OP_PRIVATE(o,1,0,file);
2911
2912     switch (optype) {
2913     case OP_AELEMFAST:
2914         if (o->op_flags & OPf_SPECIAL) {
2915             break;
2916         }
2917     case OP_GVSV:
2918     case OP_GV:
2919 #ifdef USE_ITHREADS
2920         S_xmldump_attr(aTHX_ level, file, "padix=\"%" IVdf "\"", (IV)cPADOPo->op_padix);
2921 #else
2922         if (cSVOPo->op_sv) {
2923             SV * const tmpsv1 = newSVpvn_utf8(NULL, 0, TRUE);
2924             SV * const tmpsv2 = newSVpvn_utf8("", 0, TRUE);
2925             char *s;
2926             STRLEN len;
2927             ENTER;
2928             SAVEFREESV(tmpsv1);
2929             SAVEFREESV(tmpsv2);
2930             gv_fullname3(tmpsv1, MUTABLE_GV(cSVOPo->op_sv), NULL);
2931             s = SvPV(tmpsv1,len);
2932             sv_catxmlpvn(tmpsv2, s, len, 1);
2933             S_xmldump_attr(aTHX_ level, file, "gv=\"%s\"", SvPV(tmpsv2, len));
2934             LEAVE;
2935         }
2936         else
2937             S_xmldump_attr(aTHX_ level, file, "gv=\"NULL\"");
2938 #endif
2939         break;
2940     case OP_CONST:
2941     case OP_HINTSEVAL:
2942     case OP_METHOD_NAMED:
2943 #ifndef USE_ITHREADS
2944         /* with ITHREADS, consts are stored in the pad, and the right pad
2945          * may not be active here, so skip */
2946         S_xmldump_attr(aTHX_ level, file, "%s", sv_xmlpeek(cSVOPo_sv));
2947 #endif
2948         break;
2949     case OP_ANONCODE:
2950         if (!contents) {
2951             contents = 1;
2952             PerlIO_printf(file, ">\n");
2953         }
2954         do_op_xmldump(level+1, file, CvROOT(cSVOPo_sv));
2955         break;
2956     case OP_NEXTSTATE:
2957     case OP_DBSTATE:
2958         if (CopLINE(cCOPo))
2959             S_xmldump_attr(aTHX_ level, file, "line=\"%"UVuf"\"",
2960                              (UV)CopLINE(cCOPo));
2961         if (CopSTASHPV(cCOPo))
2962             S_xmldump_attr(aTHX_ level, file, "package=\"%s\"",
2963                              CopSTASHPV(cCOPo));
2964         if (CopLABEL(cCOPo))
2965             S_xmldump_attr(aTHX_ level, file, "label=\"%s\"",
2966                              CopLABEL(cCOPo));
2967         break;
2968     case OP_ENTERLOOP:
2969         S_xmldump_attr(aTHX_ level, file, "redo=\"");
2970         if (cLOOPo->op_redoop)
2971             PerlIO_printf(file, "%"UVuf"\"", sequence_num(cLOOPo->op_redoop));
2972         else
2973             PerlIO_printf(file, "DONE\"");
2974         S_xmldump_attr(aTHX_ level, file, "next=\"");
2975         if (cLOOPo->op_nextop)
2976             PerlIO_printf(file, "%"UVuf"\"", sequence_num(cLOOPo->op_nextop));
2977         else
2978             PerlIO_printf(file, "DONE\"");
2979         S_xmldump_attr(aTHX_ level, file, "last=\"");
2980         if (cLOOPo->op_lastop)
2981             PerlIO_printf(file, "%"UVuf"\"", sequence_num(cLOOPo->op_lastop));
2982         else
2983             PerlIO_printf(file, "DONE\"");
2984         break;
2985     case OP_COND_EXPR:
2986     case OP_RANGE:
2987     case OP_MAPWHILE:
2988     case OP_GREPWHILE:
2989     case OP_OR:
2990     case OP_AND:
2991         S_xmldump_attr(aTHX_ level, file, "other=\"");
2992         if (cLOGOPo->op_other)
2993             PerlIO_printf(file, "%"UVuf"\"", sequence_num(cLOGOPo->op_other));
2994         else
2995             PerlIO_printf(file, "DONE\"");
2996         break;
2997     case OP_LEAVE:
2998     case OP_LEAVEEVAL:
2999     case OP_LEAVESUB:
3000     case OP_LEAVESUBLV:
3001     case OP_LEAVEWRITE:
3002     case OP_SCOPE:
3003         if (o->op_private & OPpREFCOUNTED)
3004             S_xmldump_attr(aTHX_ level, file, "refcnt=\"%"UVuf"\"", (UV)o->op_targ);
3005         break;
3006     default:
3007         break;
3008     }
3009
3010     if (PL_madskills && o->op_madprop) {
3011         char prevkey = '\0';
3012         SV * const tmpsv = newSVpvn_utf8("", 0, TRUE);
3013         const MADPROP* mp = o->op_madprop;
3014
3015         if (!contents) {
3016             contents = 1;
3017             PerlIO_printf(file, ">\n");
3018         }
3019         Perl_xmldump_indent(aTHX_ level, file, "<madprops>\n");
3020         level++;
3021         while (mp) {
3022             char tmp = mp->mad_key;
3023             sv_setpvs(tmpsv,"\"");
3024             if (tmp)
3025                 sv_catxmlpvn(tmpsv, &tmp, 1, 0);
3026             if ((tmp == '_') || (tmp == '#')) /* '_' '#' whitespace belong to the previous token. */
3027                 sv_catxmlpvn(tmpsv, &prevkey, 1, 0);
3028             else
3029                 prevkey = tmp;
3030             sv_catpv(tmpsv, "\"");
3031             switch (mp->mad_type) {
3032             case MAD_NULL:
3033                 sv_catpv(tmpsv, "NULL");
3034                 Perl_xmldump_indent(aTHX_ level, file, "<mad_null key=%s/>\n", SvPVX(tmpsv));
3035                 break;
3036             case MAD_PV:
3037                 sv_catpv(tmpsv, " val=\"");
3038                 sv_catxmlpvn(tmpsv, (char*)mp->mad_val, mp->mad_vlen,1);
3039                 sv_catpv(tmpsv, "\"");
3040                 Perl_xmldump_indent(aTHX_ level, file, "<mad_pv key=%s/>\n", SvPVX(tmpsv));
3041                 break;
3042             case MAD_SV:
3043                 sv_catpv(tmpsv, " val=\"");
3044                 sv_catxmlsv(tmpsv, MUTABLE_SV(mp->mad_val));
3045                 sv_catpv(tmpsv, "\"");
3046                 Perl_xmldump_indent(aTHX_ level, file, "<mad_sv key=%s/>\n", SvPVX(tmpsv));
3047                 break;
3048             case MAD_OP:
3049                 if ((OP*)mp->mad_val) {
3050                     Perl_xmldump_indent(aTHX_ level, file, "<mad_op key=%s>\n", SvPVX(tmpsv));
3051                     do_op_xmldump(level+1, file, (OP*)mp->mad_val);
3052                     Perl_xmldump_indent(aTHX_ level, file, "</mad_op>\n");
3053                 }
3054                 break;
3055             default:
3056                 Perl_xmldump_indent(aTHX_ level, file, "<mad_unk key=%s/>\n", SvPVX(tmpsv));
3057                 break;
3058             }
3059             mp = mp->mad_next;
3060         }
3061         level--;
3062         Perl_xmldump_indent(aTHX_ level, file, "</madprops>\n");
3063
3064         SvREFCNT_dec_NN(tmpsv);
3065     }
3066
3067     switch (optype) {
3068     case OP_PUSHRE:
3069     case OP_MATCH:
3070     case OP_QR:
3071     case OP_SUBST:
3072         if (!contents) {
3073             contents = 1;
3074             PerlIO_printf(file, ">\n");
3075         }
3076         do_pmop_xmldump(level, file, cPMOPo);
3077         break;
3078     default:
3079         break;
3080     }
3081
3082     if (o->op_flags & OPf_KIDS) {
3083         OP *kid;
3084         if (!contents) {
3085             contents = 1;
3086             PerlIO_printf(file, ">\n");
3087         }
3088         for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling)
3089             do_op_xmldump(level, file, kid);
3090     }
3091
3092     if (contents)
3093         Perl_xmldump_indent(aTHX_ level-1, file, "</op_%s>\n", OP_NAME(o));
3094     else
3095         PerlIO_printf(file, " />\n");
3096 }
3097
3098 void
3099 Perl_op_xmldump(pTHX_ const OP *o)
3100 {
3101     PERL_ARGS_ASSERT_OP_XMLDUMP;
3102
3103     do_op_xmldump(0, PL_xmlfp, o);
3104 }
3105 #endif
3106
3107 /*
3108  * Local variables:
3109  * c-indentation-style: bsd
3110  * c-basic-offset: 4
3111  * indent-tabs-mode: nil
3112  * End:
3113  *
3114  * ex: set ts=8 sts=4 sw=4 et:
3115  */