This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
regen/unicode_constants.pl: Skip U+1E9E if not in Unicode version
[perl5.git] / dump.c
diff --git a/dump.c b/dump.c
index 5ee6910..7369a9a 100644 (file)
--- a/dump.c
+++ b/dump.c
@@ -96,7 +96,10 @@ S_append_flags(pTHX_ SV *sv, U32 flags, const struct flag_to_name *start,
 
 Escapes at most the first "count" chars of pv and puts the results into
 dsv such that the size of the escaped string will not exceed "max" chars
-and will not contain any incomplete escape sequences.
+and will not contain any incomplete escape sequences.  The number of bytes
+escaped will be returned in the STRLEN *escaped parameter if it is not null.
+When the dsv parameter is null no escaping actually occurs, but the number
+of bytes that would be escaped were it not null will be calculated.
 
 If flags contains PERL_PV_ESCAPE_QUOTE then any double quotes in the string
 will also be escaped.
@@ -104,9 +107,9 @@ will also be escaped.
 Normally the SV will be cleared before the escaped string is prepared,
 but when PERL_PV_ESCAPE_NOCLEAR is set this will not occur.
 
-If PERL_PV_ESCAPE_UNI is set then the input string is treated as Unicode,
+If PERL_PV_ESCAPE_UNI is set then the input string is treated as UTF-8
 if PERL_PV_ESCAPE_UNI_DETECT is set then the input string is scanned
-using C<is_utf8_string()> to determine if it is Unicode.
+using C<is_utf8_string()> to determine if it is UTF-8.
 
 If PERL_PV_ESCAPE_ALL is set then all input chars will be output
 using C<\x01F1> style escapes, otherwise if PERL_PV_ESCAPE_NONASCII is set, only
@@ -144,14 +147,14 @@ Perl_pv_escape( pTHX_ SV *dsv, char const * const str,
     STRLEN wrote = 0;    /* chars written so far */
     STRLEN chsize = 0;   /* size of data to be written */
     STRLEN readsize = 1; /* size of data just read */
-    bool isuni= flags & PERL_PV_ESCAPE_UNI ? 1 : 0; /* is this Unicode */
+    bool isuni= flags & PERL_PV_ESCAPE_UNI ? 1 : 0; /* is this UTF-8 */
     const char *pv  = str;
     const char * const end = pv + count; /* end of string */
     octbuf[0] = esc;
 
     PERL_ARGS_ASSERT_PV_ESCAPE;
 
-    if (!(flags & PERL_PV_ESCAPE_NOCLEAR)) {
+    if (dsv && !(flags & PERL_PV_ESCAPE_NOCLEAR)) {
            /* This won't alter the UTF-8 flag */
            sv_setpvs(dsv, "");
     }
@@ -221,7 +224,8 @@ Perl_pv_escape( pTHX_ SV *dsv, char const * const str,
        if ( max && (wrote + chsize > max) ) {
            break;
         } else if (chsize > 1) {
-            sv_catpvn(dsv, octbuf, chsize);
+            if (dsv)
+                sv_catpvn(dsv, octbuf, chsize);
             wrote += chsize;
        } else {
            /* If PERL_PV_ESCAPE_NOBACKSLASH is set then non-ASCII bytes
@@ -230,7 +234,8 @@ Perl_pv_escape( pTHX_ SV *dsv, char const * const str,
               Or add a new API call sv_catpvc(). Think about that name, and
               how to keep it clear that it's unlike the s of catpvs, which is
               really an array of octets, not a string.  */
-            Perl_sv_catpvf( aTHX_ dsv, "%c", c);
+            if (dsv)
+                Perl_sv_catpvf( aTHX_ dsv, "%c", c);
            wrote++;
        }
         if ( flags & PERL_PV_ESCAPE_FIRSTCHAR ) 
@@ -238,7 +243,7 @@ Perl_pv_escape( pTHX_ SV *dsv, char const * const str,
     }
     if (escaped != NULL)
         *escaped= pv - str;
-    return SvPVX(dsv);
+    return dsv ? SvPVX(dsv) : NULL;
 }
 /*
 =for apidoc pv_pretty
@@ -270,36 +275,51 @@ Perl_pv_pretty( pTHX_ SV *dsv, char const * const str, const STRLEN count,
   const STRLEN max, char const * const start_color, char const * const end_color, 
   const U32 flags ) 
 {
-    const U8 dq = (flags & PERL_PV_PRETTY_QUOTE) ? '"' : '%';
+    const U8 *quotes = (U8*)((flags & PERL_PV_PRETTY_QUOTE) ? "\"\"" :
+                             (flags & PERL_PV_PRETTY_LTGT)  ? "<>" : NULL);
     STRLEN escaped;
+    STRLEN max_adjust= 0;
+    STRLEN orig_cur;
  
     PERL_ARGS_ASSERT_PV_PRETTY;
    
     if (!(flags & PERL_PV_PRETTY_NOCLEAR)) {
-           /* This won't alter the UTF-8 flag */
-           sv_setpvs(dsv, "");
+        /* This won't alter the UTF-8 flag */
+        sv_setpvs(dsv, "");
     }
+    orig_cur= SvCUR(dsv);
 
-    if ( dq == '"' )
-        sv_catpvs(dsv, "\"");
-    else if ( flags & PERL_PV_PRETTY_LTGT )
-        sv_catpvs(dsv, "<");
+    if ( quotes )
+        Perl_sv_catpvf(aTHX_ dsv, "%c", quotes[0]);
         
     if ( start_color != NULL ) 
         sv_catpv(dsv, start_color);
-    
-    pv_escape( dsv, str, count, max, &escaped, flags | PERL_PV_ESCAPE_NOCLEAR );    
-    
+
+    if ((flags & PERL_PV_PRETTY_EXACTSIZE)) {
+        if (quotes)
+            max_adjust += 2;
+        assert(max > max_adjust);
+        pv_escape( NULL, str, count, max - max_adjust, &escaped, flags );
+        if ( (flags & PERL_PV_PRETTY_ELLIPSES) && ( escaped < count ) )
+            max_adjust += 3;
+        assert(max > max_adjust);
+    }
+
+    pv_escape( dsv, str, count, max - max_adjust, &escaped, flags | PERL_PV_ESCAPE_NOCLEAR );
+
     if ( end_color != NULL ) 
         sv_catpv(dsv, end_color);
 
-    if ( dq == '"' ) 
-       sv_catpvs( dsv, "\"");
-    else if ( flags & PERL_PV_PRETTY_LTGT )
-        sv_catpvs(dsv, ">");         
+    if ( quotes )
+        Perl_sv_catpvf(aTHX_ dsv, "%c", quotes[1]);
     
     if ( (flags & PERL_PV_PRETTY_ELLIPSES) && ( escaped < count ) )
            sv_catpvs(dsv, "...");
+
+    if ((flags & PERL_PV_PRETTY_EXACTSIZE)) {
+        while( SvCUR(dsv) - orig_cur < max )
+            sv_catpvs(dsv," ");
+    }
  
     return SvPVX(dsv);
 }
@@ -457,9 +477,9 @@ Perl_sv_peek(pTHX_ SV *sv)
        }
     }
     else if (SvNOKp(sv)) {
-       STORE_NUMERIC_LOCAL_SET_STANDARD();
+       STORE_LC_NUMERIC_UNDERLYING_SET_STANDARD();
        Perl_sv_catpvf(aTHX_ t, "(%"NVgf")",SvNVX(sv));
-       RESTORE_NUMERIC_LOCAL();
+       RESTORE_LC_NUMERIC_UNDERLYING();
     }
     else if (SvIOKp(sv)) {
        if (SvIsUV(sv))
@@ -552,7 +572,10 @@ Perl_dump_packsubs_perl(pTHX_ const HV *stash, bool justperl)
     for (i = 0; i <= (I32) HvMAX(stash); i++) {
         const HE *entry;
        for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
-           const GV * const gv = (const GV *)HeVAL(entry);
+           GV * gv = (GV *)HeVAL(entry);
+            if (SvROK(gv) && SvTYPE(SvRV(gv)) == SVt_PVCV)
+                /* unfake a fake GV */
+                (void)CvGV(SvRV(gv));
            if (SvTYPE(gv) != SVt_PVGV || !GvGP(gv))
                continue;
            if (GvCVu(gv))
@@ -642,8 +665,8 @@ Perl_do_pmop_dump(pTHX_ I32 level, PerlIO *file, const PMOP *pm)
     else
        ch = '/';
     if (PM_GETRE(pm))
-       Perl_dump_indent(aTHX_ level, file, "PMf_PRE %c%s%c%s\n",
-            ch, RX_PRECOMP(PM_GETRE(pm)), ch,
+       Perl_dump_indent(aTHX_ level, file, "PMf_PRE %c%.*s%c%s\n",
+            ch,(int)RX_PRELEN(PM_GETRE(pm)), RX_PRECOMP(PM_GETRE(pm)), ch,
             (pm->op_private & OPpRUNTIME) ? " (RUNTIME)" : "");
     else
        Perl_dump_indent(aTHX_ level, file, "PMf_PRE (RUNTIME)\n");
@@ -751,6 +774,10 @@ S_sequence_num(pTHX_ const OP *o)
     return PL_op_seq;
 }
 
+
+
+
+
 const struct flag_to_name op_flags_names[] = {
     {OPf_KIDS, ",KIDS"},
     {OPf_PARENS, ",PARENS"},
@@ -760,125 +787,6 @@ const struct flag_to_name op_flags_names[] = {
     {OPf_SPECIAL, ",SPECIAL"}
 };
 
-const struct flag_to_name op_trans_names[] = {
-    {OPpTRANS_FROM_UTF, ",FROM_UTF"},
-    {OPpTRANS_TO_UTF, ",TO_UTF"},
-    {OPpTRANS_IDENTICAL, ",IDENTICAL"},
-    {OPpTRANS_SQUASH, ",SQUASH"},
-    {OPpTRANS_COMPLEMENT, ",COMPLEMENT"},
-    {OPpTRANS_GROWS, ",GROWS"},
-    {OPpTRANS_DELETE, ",DELETE"}
-};
-
-const struct flag_to_name op_entersub_names[] = {
-    {OPpENTERSUB_DB, ",DB"},
-    {OPpENTERSUB_HASTARG, ",HASTARG"},
-    {OPpENTERSUB_AMPER, ",AMPER"},
-    {OPpENTERSUB_NOPAREN, ",NOPAREN"},
-    {OPpENTERSUB_INARGS, ",INARGS"}
-};
-
-const struct flag_to_name op_const_names[] = {
-    {OPpCONST_NOVER, ",NOVER"},
-    {OPpCONST_SHORTCIRCUIT, ",SHORTCIRCUIT"},
-    {OPpCONST_STRICT, ",STRICT"},
-    {OPpCONST_ENTERED, ",ENTERED"},
-    {OPpCONST_BARE, ",BARE"}
-};
-
-const struct flag_to_name op_sort_names[] = {
-    {OPpSORT_NUMERIC, ",NUMERIC"},
-    {OPpSORT_INTEGER, ",INTEGER"},
-    {OPpSORT_REVERSE, ",REVERSE"},
-    {OPpSORT_INPLACE, ",INPLACE"},
-    {OPpSORT_DESCEND, ",DESCEND"},
-    {OPpSORT_QSORT, ",QSORT"},
-    {OPpSORT_STABLE, ",STABLE"}
-};
-
-const struct flag_to_name op_open_names[] = {
-    {OPpOPEN_IN_RAW, ",IN_RAW"},
-    {OPpOPEN_IN_CRLF, ",IN_CRLF"},
-    {OPpOPEN_OUT_RAW, ",OUT_RAW"},
-    {OPpOPEN_OUT_CRLF, ",OUT_CRLF"}
-};
-
-const struct flag_to_name op_sassign_names[] = {
-    {OPpASSIGN_BACKWARDS, ",BACKWARDS"},
-    {OPpASSIGN_CV_TO_GV,  ",CV2GV"}
-};
-
-const struct flag_to_name op_leave_names[] = {
-    {OPpREFCOUNTED, ",REFCOUNTED"},
-    {OPpLVALUE,            ",LVALUE"}
-};
-
-#define OP_PRIVATE_ONCE(op, flag, name) \
-    const struct flag_to_name CAT2(op, _names)[] = {   \
-       {(flag), (name)} \
-    }
-
-OP_PRIVATE_ONCE(op_leavesub, OPpREFCOUNTED, ",REFCOUNTED");
-OP_PRIVATE_ONCE(op_repeat, OPpREPEAT_DOLIST, ",DOLIST");
-OP_PRIVATE_ONCE(op_reverse, OPpREVERSE_INPLACE, ",INPLACE");
-OP_PRIVATE_ONCE(op_rv2cv, OPpLVAL_INTRO, ",INTRO");
-OP_PRIVATE_ONCE(op_flip, OPpFLIP_LINENUM, ",LINENUM");
-OP_PRIVATE_ONCE(op_gv, OPpEARLY_CV, ",EARLY_CV");
-OP_PRIVATE_ONCE(op_list, OPpLIST_GUESSED, ",GUESSED");
-OP_PRIVATE_ONCE(op_delete, OPpSLICE, ",SLICE");
-OP_PRIVATE_ONCE(op_exists, OPpEXISTS_SUB, ",EXISTS_SUB");
-OP_PRIVATE_ONCE(op_die, OPpHUSH_VMSISH, ",HUSH_VMSISH");
-OP_PRIVATE_ONCE(op_split, OPpSPLIT_IMPLIM, ",IMPLIM");
-OP_PRIVATE_ONCE(op_dbstate, OPpHUSH_VMSISH, ",HUSH_VMSISH");
-
-struct op_private_by_op {
-    U16 op_type;
-    U16 len;
-    const struct flag_to_name *start;
-};
-
-const struct op_private_by_op op_private_names[] = {
-    {OP_LEAVESUB, C_ARRAY_LENGTH(op_leavesub_names), op_leavesub_names },
-    {OP_LEAVE, C_ARRAY_LENGTH(op_leave_names), op_leave_names },
-    {OP_LEAVESUBLV, C_ARRAY_LENGTH(op_leavesub_names), op_leavesub_names },
-    {OP_LEAVEWRITE, C_ARRAY_LENGTH(op_leavesub_names), op_leavesub_names },
-    {OP_DIE, C_ARRAY_LENGTH(op_die_names), op_die_names },
-    {OP_DELETE, C_ARRAY_LENGTH(op_delete_names), op_delete_names },
-    {OP_EXISTS, C_ARRAY_LENGTH(op_exists_names), op_exists_names },
-    {OP_FLIP, C_ARRAY_LENGTH(op_flip_names), op_flip_names },
-    {OP_FLOP, C_ARRAY_LENGTH(op_flip_names), op_flip_names },
-    {OP_GV, C_ARRAY_LENGTH(op_gv_names), op_gv_names },
-    {OP_LIST, C_ARRAY_LENGTH(op_list_names), op_list_names },
-    {OP_SASSIGN, C_ARRAY_LENGTH(op_sassign_names), op_sassign_names },
-    {OP_REPEAT, C_ARRAY_LENGTH(op_repeat_names), op_repeat_names },
-    {OP_RV2CV, C_ARRAY_LENGTH(op_rv2cv_names), op_rv2cv_names },
-    {OP_TRANS, C_ARRAY_LENGTH(op_trans_names), op_trans_names },
-    {OP_CONST, C_ARRAY_LENGTH(op_const_names), op_const_names },
-    {OP_SORT, C_ARRAY_LENGTH(op_sort_names), op_sort_names },
-    {OP_OPEN, C_ARRAY_LENGTH(op_open_names), op_open_names },
-    {OP_SPLIT, C_ARRAY_LENGTH(op_split_names), op_split_names },
-    {OP_DBSTATE, C_ARRAY_LENGTH(op_dbstate_names), op_dbstate_names },
-    {OP_NEXTSTATE, C_ARRAY_LENGTH(op_dbstate_names), op_dbstate_names },
-    {OP_BACKTICK, C_ARRAY_LENGTH(op_open_names), op_open_names }
-};
-
-static bool
-S_op_private_to_names(pTHX_ SV *tmpsv, U32 optype, U32 op_private) {
-    const struct op_private_by_op *start = op_private_names;
-    const struct op_private_by_op *const end = C_ARRAY_END(op_private_names);
-
-    /* This is a linear search, but no worse than the code that it replaced.
-       It's debugging code - size is more important than speed.  */
-    do {
-       if (optype == start->op_type) {
-           S_append_flags(aTHX_ tmpsv, op_private, start->start,
-                          start->start + start->len);
-           return TRUE;
-       }
-    } while (++start < end);
-    return FALSE;
-}
-
 
 void
 Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, const OP *o)
@@ -907,30 +815,6 @@ Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, const OP *o)
     if (o->op_targ) {
        if (optype == OP_NULL) {
            Perl_dump_indent(aTHX_ level, file, "  (was %s)\n", PL_op_name[o->op_targ]);
-           if (o->op_targ == OP_NEXTSTATE) {
-               if (CopLINE(cCOPo))
-                   Perl_dump_indent(aTHX_ level, file, "LINE = %"UVuf"\n",
-                                    (UV)CopLINE(cCOPo));
-        if (CopSTASHPV(cCOPo)) {
-            SV* tmpsv = newSVpvs_flags("", SVs_TEMP);
-            HV *stash = CopSTASH(cCOPo);
-            const char * const hvname = HvNAME_get(stash);
-
-                   Perl_dump_indent(aTHX_ level, file, "PACKAGE = \"%s\"\n",
-                           generic_pv_escape( tmpsv, hvname, HvNAMELEN(stash), HvNAMEUTF8(stash)));
-       }
-     if (CopLABEL(cCOPo)) {
-          SV* tmpsv = newSVpvs_flags("", SVs_TEMP);
-          STRLEN label_len;
-          U32 label_flags;
-          const char *label = CopLABEL_len_flags(cCOPo,
-                                                 &label_len,
-                                                 &label_flags);
-                   Perl_dump_indent(aTHX_ level, file, "LABEL = \"%s\"\n",
-                           generic_pv_escape( tmpsv, label, label_len,(label_flags & SVf_UTF8)));
-      }
-
-           }
        }
        else
            Perl_dump_indent(aTHX_ level, file, "TARG = %ld\n", (long)o->op_targ);
@@ -960,101 +844,97 @@ Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, const OP *o)
         if (o->op_savefree) sv_catpvs(tmpsv, ",SAVEFREE");
         if (o->op_static)   sv_catpvs(tmpsv, ",STATIC");
         if (o->op_folded)   sv_catpvs(tmpsv, ",FOLDED");
-        if (o->op_lastsib)  sv_catpvs(tmpsv, ",LASTSIB");
+        if (o->op_moresib)  sv_catpvs(tmpsv, ",MORESIB");
         Perl_dump_indent(aTHX_ level, file, "FLAGS = (%s)\n",
                          SvCUR(tmpsv) ? SvPVX_const(tmpsv) + 1 : "");
     }
 
     if (o->op_private) {
-        U32 optype = o->op_type;
-        U32 oppriv = o->op_private;
-        SV * const tmpsv = newSVpvs("");
-       if (PL_opargs[optype] & OA_TARGLEX) {
-           if (oppriv & OPpTARGET_MY)
-               sv_catpv(tmpsv, ",TARGET_MY");
-       }
-       else if (optype == OP_ENTERSUB ||
-                 optype == OP_RV2SV ||
-                 optype == OP_GVSV ||
-                 optype == OP_RV2AV ||
-                 optype == OP_RV2HV ||
-                 optype == OP_RV2GV ||
-                 optype == OP_AELEM ||
-                 optype == OP_HELEM )
-        {
-            if (optype == OP_ENTERSUB) {
-                append_flags(tmpsv, oppriv, op_entersub_names);
-            }
-            else {
-                switch (oppriv & OPpDEREF) {
-                case OPpDEREF_SV:
-                    sv_catpv(tmpsv, ",SV");
-                    break;
-                case OPpDEREF_AV:
-                    sv_catpv(tmpsv, ",AV");
-                    break;
-                case OPpDEREF_HV:
-                    sv_catpv(tmpsv, ",HV");
-                    break;
+        U16 oppriv = o->op_private;
+        I16 op_ix = PL_op_private_bitdef_ix[o->op_type];
+        SV * tmpsv = NULL;
+
+        if (op_ix != -1) {
+            U16 stop = 0;
+            tmpsv = newSVpvs("");
+            for (; !stop; op_ix++) {
+                U16 entry = PL_op_private_bitdefs[op_ix];
+                U16 bit = (entry >> 2) & 7;
+                U16 ix = entry >> 5;
+
+                stop = (entry & 1);
+
+                if (entry & 2) {
+                    /* bitfield */
+                    I16 const *p = &PL_op_private_bitfields[ix];
+                    U16 bitmin = (U16) *p++;
+                    I16 label = *p++;
+                    I16 enum_label;
+                    U16 mask = 0;
+                    U16 i;
+                    U16 val;
+
+                    for (i = bitmin; i<= bit; i++)
+                        mask |= (1<<i);
+                    bit = bitmin;
+                    val = (oppriv & mask);
+
+                    if (   label != -1
+                        && PL_op_private_labels[label] == '-'
+                        && PL_op_private_labels[label+1] == '\0'
+                    )
+                        /* display as raw number */
+                        continue;
+
+                    oppriv -= val;
+                    val >>= bit;
+                    enum_label = -1;
+                    while (*p != -1) {
+                        if (val == *p++) {
+                            enum_label = *p;
+                            break;
+                        }
+                        p++;
+                    }
+                    if (val == 0 && enum_label == -1)
+                        /* don't display anonymous zero values */
+                        continue;
+
+                    sv_catpv(tmpsv, ",");
+                    if (label != -1) {
+                        sv_catpv(tmpsv, &PL_op_private_labels[label]);
+                        sv_catpv(tmpsv, "=");
+                    }
+                    if (enum_label == -1)
+                        Perl_sv_catpvf(aTHX_ tmpsv, "0x%"UVxf, (UV)val);
+                    else
+                        sv_catpv(tmpsv, &PL_op_private_labels[enum_label]);
+
+                }
+                else {
+                    /* bit flag */
+                    if (   oppriv & (1<<bit)
+                        && !(PL_op_private_labels[ix] == '-'
+                             && PL_op_private_labels[ix+1] == '\0'))
+                    {
+                        oppriv -= (1<<bit);
+                        sv_catpv(tmpsv, ",");
+                        sv_catpv(tmpsv, &PL_op_private_labels[ix]);
+                    }
                 }
-                if (oppriv & OPpMAYBE_LVSUB)
-                    sv_catpv(tmpsv, ",MAYBE_LVSUB");
-            }
-            if (optype == OP_AELEM || optype == OP_HELEM) {
-                if (oppriv & OPpLVAL_DEFER)
-                    sv_catpv(tmpsv, ",LVAL_DEFER");
-            }
-            else if (optype == OP_RV2HV || optype == OP_PADHV) {
-                if (oppriv & OPpMAYBE_TRUEBOOL)
-                    sv_catpvs(tmpsv, ",OPpMAYBE_TRUEBOOL");
-                if (oppriv & OPpTRUEBOOL)
-                    sv_catpvs(tmpsv, ",OPpTRUEBOOL");
             }
-            else {
-                if (oppriv & HINT_STRICT_REFS)
-                    sv_catpv(tmpsv, ",STRICT_REFS");
-                if (oppriv & OPpOUR_INTRO)
-                    sv_catpv(tmpsv, ",OUR_INTRO");
+            if (oppriv) {
+                sv_catpv(tmpsv, ",");
+                Perl_sv_catpvf(aTHX_ tmpsv, "0x%"UVxf, (UV)oppriv);
             }
         }
-       else if (S_op_private_to_names(aTHX_ tmpsv, optype, oppriv)) {
-       }
-       else if (OP_IS_FILETEST(o->op_type)) {
-            if (oppriv & OPpFT_ACCESS)
-                sv_catpv(tmpsv, ",FT_ACCESS");
-            if (oppriv & OPpFT_STACKED)
-                sv_catpv(tmpsv, ",FT_STACKED");
-            if (oppriv & OPpFT_STACKING)
-                sv_catpv(tmpsv, ",FT_STACKING");
-            if (oppriv & OPpFT_AFTER_t)
-                sv_catpv(tmpsv, ",AFTER_t");
-       }
-       else if (o->op_type == OP_AASSIGN) {
-           if (oppriv & OPpASSIGN_COMMON)
-               sv_catpvs(tmpsv, ",COMMON");
-           if (oppriv & OPpMAYBE_LVSUB)
-               sv_catpvs(tmpsv, ",MAYBE_LVSUB");
-       }
-       if (o->op_flags & OPf_MOD && oppriv & OPpLVAL_INTRO)
-           sv_catpv(tmpsv, ",INTRO");
-       if (o->op_type == OP_PADRANGE)
-           Perl_sv_catpvf(aTHX_ tmpsv, ",COUNT=%"UVuf,
-                           (UV)(oppriv & OPpPADRANGE_COUNTMASK));
-        if (  (o->op_type == OP_RV2HV || o->op_type == OP_RV2AV ||
-               o->op_type == OP_PADAV || o->op_type == OP_PADHV ||
-               o->op_type == OP_ASLICE || o->op_type == OP_HSLICE)
-           && oppriv & OPpSLICEWARNING  )
-            sv_catpvs(tmpsv, ",SLICEWARNING");
-       if (SvCUR(tmpsv)) {
+       if (tmpsv && SvCUR(tmpsv)) {
             Perl_dump_indent(aTHX_ level, file, "PRIVATE = (%s)\n", SvPVX_const(tmpsv) + 1);
        } else
             Perl_dump_indent(aTHX_ level, file, "PRIVATE = (0x%"UVxf")\n",
                              (UV)oppriv);
     }
 
-
-
-
     switch (optype) {
     case OP_AELEMFAST:
     case OP_GVSV:
@@ -1078,15 +958,34 @@ Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, const OP *o)
        }
 #endif
        break;
+
+    case OP_MULTIDEREF:
+    {
+        UNOP_AUX_item *items = cUNOP_AUXo->op_aux;
+        UV i, count = items[-1].uv;
+
+       Perl_dump_indent(aTHX_ level, file, "ARGS = \n");
+        for (i=0; i < count;  i++)
+            Perl_dump_indent(aTHX_ level+1, file, "%"UVuf" => 0x%"UVxf"\n",
+                                    i, items[i].uv);
+    }
+
     case OP_CONST:
     case OP_HINTSEVAL:
     case OP_METHOD_NAMED:
+    case OP_METHOD_SUPER:
+    case OP_METHOD_REDIR:
+    case OP_METHOD_REDIR_SUPER:
 #ifndef USE_ITHREADS
        /* with ITHREADS, consts are stored in the pad, and the right pad
         * may not be active here, so skip */
-       Perl_dump_indent(aTHX_ level, file, "SV = %s\n", SvPEEK(cSVOPo_sv));
+       Perl_dump_indent(aTHX_ level, file, "SV = %s\n", SvPEEK(cMETHOPx_meth(o)));
 #endif
        break;
+    case OP_NULL:
+       if (o->op_targ != OP_NEXTSTATE && o->op_targ != OP_DBSTATE)
+           break;
+       /* FALLTHROUGH */
     case OP_NEXTSTATE:
     case OP_DBSTATE:
        if (CopLINE(cCOPo))
@@ -1111,6 +1010,8 @@ Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, const OP *o)
                            generic_pv_escape( tmpsv, label, label_len,
                                       (label_flags & SVf_UTF8)));
    }
+        Perl_dump_indent(aTHX_ level, file, "SEQ = %u\n",
+                         (unsigned int)cCOPo->cop_seq);
        break;
     case OP_ENTERLOOP:
        Perl_dump_indent(aTHX_ level, file, "REDO ===> ");
@@ -1161,7 +1062,7 @@ Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, const OP *o)
     }
     if (o->op_flags & OPf_KIDS) {
        OP *kid;
-       for (kid = cUNOPo->op_first; kid; kid = OP_SIBLING(kid))
+       for (kid = cUNOPo->op_first; kid; kid = OpSIBLING(kid))
            do_op_dump(level, file, kid);
     }
     Perl_dump_indent(aTHX_ level-1, file, "}\n");
@@ -1189,9 +1090,6 @@ Perl_gv_dump(pTHX_ GV *gv)
     const char* name;
     SV *sv, *tmp = newSVpvs_flags("", SVs_TEMP);
 
-
-    PERL_ARGS_ASSERT_GV_DUMP;
-
     if (!gv) {
        PerlIO_printf(Perl_debug_log, "{}\n");
        return;
@@ -1208,7 +1106,7 @@ Perl_gv_dump(pTHX_ GV *gv)
         Perl_dump_indent(aTHX_ 1, Perl_debug_log, "-> %s",
                      generic_pv_escape( tmp, name, len, SvUTF8(sv) ));
     }
-    PerlIO_putc(Perl_debug_log, '\n');
+    (void)PerlIO_putc(Perl_debug_log, '\n');
     Perl_dump_indent(aTHX_ 0, Perl_debug_log, "}\n");
 }
 
@@ -1218,7 +1116,7 @@ Perl_gv_dump(pTHX_ GV *gv)
  */
 
 static const struct { const char type; const char *name; } magic_names[] = {
-#include "mg_names.c"
+#include "mg_names.inc"
        /* this null string terminates the list */
        { 0,                         NULL },
 };
@@ -1329,7 +1227,7 @@ Perl_do_magic_dump(pTHX_ I32 level, PerlIO *file, const MAGIC *mg, I32 nest, I32
                 " ???? - " __FILE__
                 " does not know how to handle this MG_LEN"
                );
-            PerlIO_putc(file, '\n');
+            (void)PerlIO_putc(file, '\n');
         }
        if (mg->mg_type == PERL_MAGIC_utf8) {
            const STRLEN * const cache = (STRLEN *) mg->mg_ptr;
@@ -1372,7 +1270,7 @@ Perl_do_hv_dump(pTHX_ I32 level, PerlIO *file, const char *name, HV *sv)
                                    HvNAMELEN(sv), HvNAMEUTF8(sv)));
     }
     else
-       PerlIO_putc(file, '\n');
+        (void)PerlIO_putc(file, '\n');
 }
 
 void
@@ -1387,7 +1285,7 @@ Perl_do_gv_dump(pTHX_ I32 level, PerlIO *file, const char *name, GV *sv)
                               generic_pv_escape( tmpsv, GvNAME(sv), GvNAMELEN(sv), GvNAMEUTF8(sv) ));
     }
     else
-       PerlIO_putc(file, '\n');
+        (void)PerlIO_putc(file, '\n');
 }
 
 void
@@ -1411,7 +1309,7 @@ Perl_do_gvgv_dump(pTHX_ I32 level, PerlIO *file, const char *name, GV *sv)
                               generic_pv_escape( tmp, GvNAME(sv), GvNAMELEN(sv), GvNAMEUTF8(sv)));
     }
     else
-       PerlIO_putc(file, '\n');
+        (void)PerlIO_putc(file, '\n');
 }
 
 const struct flag_to_name first_sv_flags_names[] = {
@@ -1429,9 +1327,8 @@ const struct flag_to_name second_sv_flags_names[] = {
     {SVf_OOK, "OOK,"},
     {SVf_FAKE, "FAKE,"},
     {SVf_READONLY, "READONLY,"},
-    {SVf_IsCOW, "IsCOW,"},
+    {SVf_PROTECT, "PROTECT,"},
     {SVf_BREAK, "BREAK,"},
-    {SVf_AMAGIC, "OVERLOAD,"},
     {SVp_IOK, "pIOK,"},
     {SVp_NOK, "pNOK,"},
     {SVp_POK, "pPOK,"}
@@ -1450,8 +1347,10 @@ const struct flag_to_name cv_flags_names[] = {
     {CVf_CVGV_RC, "CVGV_RC,"},
     {CVf_DYNFILE, "DYNFILE,"},
     {CVf_AUTOLOAD, "AUTOLOAD,"},
-    {CVf_HASEVAL, "HASEVAL"},
+    {CVf_HASEVAL, "HASEVAL,"},
     {CVf_SLABBED, "SLABBED,"},
+    {CVf_NAMED, "NAMED,"},
+    {CVf_LEXICAL, "LEXICAL,"},
     {CVf_ISXSUB, "ISXSUB,"}
 };
 
@@ -1459,6 +1358,7 @@ const struct flag_to_name hv_flags_names[] = {
     {SVphv_SHAREKEYS, "SHAREKEYS,"},
     {SVphv_LAZYDEL, "LAZYDEL,"},
     {SVphv_HASKFLAGS, "HASKFLAGS,"},
+    {SVf_AMAGIC, "OVERLOAD,"},
     {SVphv_CLONEABLE, "CLONEABLE,"}
 };
 
@@ -1466,7 +1366,6 @@ const struct flag_to_name gp_flags_names[] = {
     {GVf_INTRO, "INTRO,"},
     {GVf_MULTI, "MULTI,"},
     {GVf_ASSUMECV, "ASSUMECV,"},
-    {GVf_IN_PAD, "IN_PAD,"}
 };
 
 const struct flag_to_name gp_flags_imported_names[] = {
@@ -1484,7 +1383,9 @@ const struct flag_to_name regexp_extflags_names[] = {
     {RXf_PMf_SINGLELINE,  "PMf_SINGLELINE,"},
     {RXf_PMf_FOLD,        "PMf_FOLD,"},
     {RXf_PMf_EXTENDED,    "PMf_EXTENDED,"},
+    {RXf_PMf_EXTENDED_MORE, "PMf_EXTENDED_MORE,"},
     {RXf_PMf_KEEPCOPY,    "PMf_KEEPCOPY,"},
+    {RXf_PMf_NOCAPTURE,   "PMf_NOCAPURE,"},
     {RXf_IS_ANCHORED,     "IS_ANCHORED,"},
     {RXf_NO_INPLACE_SUBST, "NO_INPLACE_SUBST,"},
     {RXf_EVAL_SEEN,       "EVAL_SEEN,"},
@@ -1514,10 +1415,8 @@ const struct flag_to_name regexp_core_intflags_names[] = {
     {PREGf_CUTGROUP_SEEN,   "CUTGROUP_SEEN,"},
     {PREGf_USE_RE_EVAL,     "USE_RE_EVAL,"},
     {PREGf_NOSCAN,          "NOSCAN,"},
-    {PREGf_CANY_SEEN,       "CANY_SEEN,"},
     {PREGf_GPOS_SEEN,       "GPOS_SEEN,"},
     {PREGf_GPOS_FLOAT,      "GPOS_FLOAT,"},
-    {PREGf_ANCH_BOL,        "ANCH_BOL,"},
     {PREGf_ANCH_MBOL,       "ANCH_MBOL,"},
     {PREGf_ANCH_SBOL,       "ANCH_SBOL,"},
     {PREGf_ANCH_GPOS,       "ANCH_GPOS,"},
@@ -1549,21 +1448,16 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
                   (int)(PL_dumpindent*level), "", (IV)SvREFCNT(sv),
                   (int)(PL_dumpindent*level), "");
 
-    if (!((flags & SVpad_NAME) == SVpad_NAME
-         && (type == SVt_PVMG || type == SVt_PVNV))) {
-       if ((flags & SVs_PADMY) && (flags & SVs_PADSTALE))
+    if ((flags & SVs_PADSTALE))
            sv_catpv(d, "PADSTALE,");
-    }
-    if (!((flags & SVpad_NAME) == SVpad_NAME && type == SVt_PVMG)) {
-       if (!(flags & SVs_PADMY) && (flags & SVs_PADTMP))
+    if ((flags & SVs_PADTMP))
            sv_catpv(d, "PADTMP,");
-       if (flags & SVs_PADMY)  sv_catpv(d, "PADMY,");
-    }
     append_flags(d, flags, first_sv_flags_names);
     if (flags & SVf_ROK)  {    
                                sv_catpv(d, "ROK,");
        if (SvWEAKREF(sv))      sv_catpv(d, "WEAKREF,");
     }
+    if (flags & SVf_IsCOW && type != SVt_PVHV) sv_catpvs(d, "IsCOW,");
     append_flags(d, flags, second_sv_flags_names);
     if (flags & SVp_SCREAM && type != SVt_PVHV && !isGV_with_GP(sv)
                           && type != SVt_PVAV) {
@@ -1607,14 +1501,9 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
     case SVt_PVMG:
        if (SvTAIL(sv))         sv_catpv(d, "TAIL,");
        if (SvVALID(sv))        sv_catpv(d, "VALID,");
-       if (SvPAD_TYPED(sv))    sv_catpv(d, "TYPED,");
-       if (SvPAD_OUR(sv))      sv_catpv(d, "OUR,");
        /* FALLTHROUGH */
-    case SVt_PVNV:
-       if (SvPAD_STATE(sv))    sv_catpv(d, "STATE,");
        goto evaled_or_uv;
     case SVt_PVAV:
-       if (AvPAD_NAMELIST(sv)) sv_catpvs(d, "NAMELIST,");
        break;
     }
     /* SVphv_SHAREKEYS is also 0x20000000 */
@@ -1665,40 +1554,20 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
         && type != SVt_REGEXP && !isGV_with_GP(sv) && !SvVALID(sv))
        || (type == SVt_IV && !SvROK(sv))) {
        if (SvIsUV(sv)
-#ifdef PERL_OLD_COPY_ON_WRITE
-                      || SvIsCOW(sv)
-#endif
                                     )
            Perl_dump_indent(aTHX_ level, file, "  UV = %"UVuf, (UV)SvUVX(sv));
        else
            Perl_dump_indent(aTHX_ level, file, "  IV = %"IVdf, (IV)SvIVX(sv));
-#ifdef PERL_OLD_COPY_ON_WRITE
-       if (SvIsCOW_shared_hash(sv))
-           PerlIO_printf(file, "  (HASH)");
-       else if (SvIsCOW_normal(sv))
-           PerlIO_printf(file, "  (COW from 0x%"UVxf")", (UV)SvUVX(sv));
-#endif
-       PerlIO_putc(file, '\n');
+       (void)PerlIO_putc(file, '\n');
     }
 
-    if ((type == SVt_PVNV || type == SVt_PVMG)
-       && (SvFLAGS(sv) & SVpad_NAME) == SVpad_NAME) {
-       Perl_dump_indent(aTHX_ level, file, "  COP_LOW = %"UVuf"\n",
-                        (UV) COP_SEQ_RANGE_LOW(sv));
-       Perl_dump_indent(aTHX_ level, file, "  COP_HIGH = %"UVuf"\n",
-                        (UV) COP_SEQ_RANGE_HIGH(sv));
-    } else if ((type >= SVt_PVNV && type != SVt_PVAV && type != SVt_PVHV
+    if ((type >= SVt_PVNV && type != SVt_PVAV && type != SVt_PVHV
                && type != SVt_PVCV && type != SVt_PVFM  && type != SVt_REGEXP
                && type != SVt_PVIO && !isGV_with_GP(sv) && !SvVALID(sv))
               || type == SVt_NV) {
-       STORE_NUMERIC_LOCAL_SET_STANDARD();
-       /* %Vg doesn't work? --jhi */
-#ifdef USE_LONG_DOUBLE
-       Perl_dump_indent(aTHX_ level, file, "  NV = %.*" PERL_PRIgldbl "\n", LDBL_DIG, SvNVX(sv));
-#else
-       Perl_dump_indent(aTHX_ level, file, "  NV = %.*g\n", DBL_DIG, SvNVX(sv));
-#endif
-       RESTORE_NUMERIC_LOCAL();
+       STORE_LC_NUMERIC_UNDERLYING_SET_STANDARD();
+       Perl_dump_indent(aTHX_ level, file, "  NV = %.*" NVgf "\n", NV_DIG, SvNVX(sv));
+       RESTORE_LC_NUMERIC_UNDERLYING();
     }
 
     if (SvROK(sv)) {
@@ -1751,7 +1620,7 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
            if (!re)
                Perl_dump_indent(aTHX_ level, file, "  LEN = %"IVdf"\n",
                                       (IV)SvLEN(sv));
-#ifdef PERL_NEW_COPY_ON_WRITE
+#ifdef PERL_COPY_ON_WRITE
            if (SvIsCOW(sv) && SvLEN(sv))
                Perl_dump_indent(aTHX_ level, file, "  COW_REFCNT = %d\n",
                                       CowREFCNT(sv));
@@ -1762,17 +1631,8 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
     }
 
     if (type >= SVt_PVMG) {
-       if (type == SVt_PVMG && SvPAD_OUR(sv)) {
-           HV * const ost = SvOURSTASH(sv);
-           if (ost)
-               do_hv_dump(level, file, "  OURSTASH", ost);
-       } else if (SvTYPE(sv) == SVt_PVAV && AvPAD_NAMELIST(sv)) {
-           Perl_dump_indent(aTHX_ level, file, "  MAXNAMED = %"UVuf"\n",
-                                  (UV)PadnamelistMAXNAMED(sv));
-       } else {
-           if (SvMAGIC(sv))
+       if (SvMAGIC(sv))
                do_magic_dump(level, file, SvMAGIC(sv), nest+1, maxnest, dumpops, pvlim);
-       }
        if (SvSTASH(sv))
            do_hv_dump(level, file, "  STASH", SvSTASH(sv));
 
@@ -1791,13 +1651,10 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
            Perl_dump_indent(aTHX_ level, file, "  ALLOC = 0x%"UVxf"\n", PTR2UV(AvALLOC(sv)));
        }
        else
-           PerlIO_putc(file, '\n');
+            (void)PerlIO_putc(file, '\n');
        Perl_dump_indent(aTHX_ level, file, "  FILL = %"IVdf"\n", (IV)AvFILLp(sv));
        Perl_dump_indent(aTHX_ level, file, "  MAX = %"IVdf"\n", (IV)AvMAX(sv));
-       /* arylen is stored in magic, and padnamelists use SvMAGIC for
-          something else. */
-       if (!AvPAD_NAMELIST(sv))
-           Perl_dump_indent(aTHX_ level, file, "  ARYLEN = 0x%"UVxf"\n",
+       Perl_dump_indent(aTHX_ level, file, "  ARYLEN = 0x%"UVxf"\n",
                                   SvMAGIC(sv) ? PTR2UV(AvARYLEN(sv)) : 0);
        sv_setpvs(d, "");
        if (AvREAL(sv)) sv_catpv(d, ",REAL");
@@ -1855,7 +1712,7 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
                        PerlIO_printf(file, ", ");
                }
             }
-           PerlIO_putc(file, ')');
+           (void)PerlIO_putc(file, ')');
            /* The "quality" of a hash is defined as the total number of
               comparisons needed to access every element once, relative
               to the expected number needed for a random hash.
@@ -1874,10 +1731,10 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
                pow2 = pow2 << 1;
            theoret = usedkeys;
            theoret += theoret * (theoret-1)/pow2;
-           PerlIO_putc(file, '\n');
+           (void)PerlIO_putc(file, '\n');
            Perl_dump_indent(aTHX_ level, file, "  hash quality = %.1"NVff"%%", theoret/sum*100);
        }
-       PerlIO_putc(file, '\n');
+       (void)PerlIO_putc(file, '\n');
        Perl_dump_indent(aTHX_ level, file, "  KEYS = %"IVdf"\n", (IV)usedkeys);
         {
             STRLEN count = 0;
@@ -1913,7 +1770,7 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
                 PerlIO_printf(file, " (LAST = 0x%"UVxf")", (UV)HvLASTRAND_get(sv));
             }
 #endif
-            PerlIO_putc(file, '\n');
+            (void)PerlIO_putc(file, '\n');
         }
        {
            MAGIC * const mg = mg_find(sv, PERL_MAGIC_symtab);
@@ -2107,10 +1964,14 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
        Perl_dump_indent(aTHX_ level, file, "  DEPTH = %"IVdf"\n", (IV)CvDEPTH(sv));
        Perl_dump_indent(aTHX_ level, file, "  FLAGS = 0x%"UVxf"\n", (UV)CvFLAGS(sv));
        Perl_dump_indent(aTHX_ level, file, "  OUTSIDE_SEQ = %"UVuf"\n", (UV)CvOUTSIDE_SEQ(sv));
-       Perl_dump_indent(aTHX_ level, file, "  PADLIST = 0x%"UVxf"\n", PTR2UV(CvPADLIST(sv)));
-       if (nest < maxnest) {
-           do_dump_pad(level+1, file, CvPADLIST(sv), 0);
+       if (!CvISXSUB(sv)) {
+           Perl_dump_indent(aTHX_ level, file, "  PADLIST = 0x%"UVxf"\n", PTR2UV(CvPADLIST(sv)));
+           if (nest < maxnest) {
+               do_dump_pad(level+1, file, CvPADLIST(sv), 0);
+           }
        }
+       else
+           Perl_dump_indent(aTHX_ level, file, "  HSCXT = 0x%p\n", CvHSCXT(sv));
        {
            const CV * const outside = CvOUTSIDE(sv);
            Perl_dump_indent(aTHX_ level, file, "  OUTSIDE = 0x%"UVxf" (%s)\n",
@@ -2127,7 +1988,8 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
                                 GvNAMEUTF8(CvGV(outside)))
                         : "UNDEFINED"));
        }
-       if (nest < maxnest && (CvCLONE(sv) || CvCLONED(sv)))
+       if (CvOUTSIDE(sv)
+        && (nest < maxnest && (CvCLONE(sv) || CvCLONED(sv))))
            do_sv_dump(level+1, file, MUTABLE_SV(CvOUTSIDE(sv)), nest+1, maxnest, dumpops, pvlim);
        break;
 
@@ -2139,7 +2001,7 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
            Perl_dump_indent(aTHX_ level, file, "  TARGLEN = %"IVdf"\n", (IV)LvTARGLEN(sv));
            Perl_dump_indent(aTHX_ level, file, "  TARG = 0x%"UVxf"\n", PTR2UV(LvTARG(sv)));
            Perl_dump_indent(aTHX_ level, file, "  FLAGS = %"IVdf"\n", (IV)LvFLAGS(sv));
-           if (LvTYPE(sv) != 't' && LvTYPE(sv) != 'T')
+           if (isALPHA_FOLD_NE(LvTYPE(sv), 't'))
                do_sv_dump(level+1, file, LvTARG(sv), nest+1, maxnest,
                    dumpops, pvlim);
        }
@@ -2155,6 +2017,7 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
        }
        Perl_dump_indent(aTHX_ level, file, "  NAMELEN = %"IVdf"\n", (IV)GvNAMELEN(sv));
        do_hv_dump (level, file, "  GvSTASH", GvSTASH(sv));
+       Perl_dump_indent(aTHX_ level, file, "  FLAGS = 0x%"UVxf"\n", (UV)GvFLAGS(sv));
        Perl_dump_indent(aTHX_ level, file, "  GP = 0x%"UVxf"\n", PTR2UV(GvGP(sv)));
        if (!GvGP(sv))
            break;
@@ -2166,9 +2029,12 @@ Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bo
        Perl_dump_indent(aTHX_ level, file, "    HV = 0x%"UVxf"\n", PTR2UV(GvHV(sv)));
        Perl_dump_indent(aTHX_ level, file, "    CV = 0x%"UVxf"\n", PTR2UV(GvCV(sv)));
        Perl_dump_indent(aTHX_ level, file, "    CVGEN = 0x%"UVxf"\n", (UV)GvCVGEN(sv));
+       Perl_dump_indent(aTHX_ level, file, "    GPFLAGS = 0x%"UVxf
+                                           " (%s)\n",
+                              (UV)GvGPFLAGS(sv),
+                              GvALIASED_SV(sv) ? "ALIASED_SV" : "");
        Perl_dump_indent(aTHX_ level, file, "    LINE = %"IVdf"\n", (IV)GvLINE(sv));
        Perl_dump_indent(aTHX_ level, file, "    FILE = \"%s\"\n", GvFILE(sv));
-       Perl_dump_indent(aTHX_ level, file, "    FLAGS = 0x%"UVxf"\n", (UV)GvFLAGS(sv));
        do_gv_dump (level, file, "    EGV", GvEGV(sv));
        break;
     case SVt_PVIO:
@@ -2363,11 +2229,242 @@ Perl_runops_debug(pTHX)
     return 0;
 }
 
+
+/* print the names of the n lexical vars starting at pad offset off */
+
+void
+S_deb_padvar(pTHX_ PADOFFSET off, int n, bool paren)
+{
+    PADNAME *sv;
+    CV * const cv = deb_curcv(cxstack_ix);
+    PADNAMELIST *comppad = NULL;
+    int i;
+
+    if (cv) {
+        PADLIST * const padlist = CvPADLIST(cv);
+        comppad = PadlistNAMES(padlist);
+    }
+    if (paren)
+        PerlIO_printf(Perl_debug_log, "(");
+    for (i = 0; i < n; i++) {
+        if (comppad && (sv = padnamelist_fetch(comppad, off + i)))
+            PerlIO_printf(Perl_debug_log, "%"PNf, PNfARG(sv));
+        else
+            PerlIO_printf(Perl_debug_log, "[%"UVuf"]",
+                    (UV)(off+i));
+        if (i < n - 1)
+            PerlIO_printf(Perl_debug_log, ",");
+    }
+    if (paren)
+        PerlIO_printf(Perl_debug_log, ")");
+}
+
+
+/* append to the out SV, the name of the lexical at offset off in the CV
+ * cv */
+
+static void
+S_append_padvar(pTHX_ PADOFFSET off, CV *cv, SV *out, int n,
+        bool paren, bool is_scalar)
+{
+    PADNAME *sv;
+    PADNAMELIST *namepad = NULL;
+    int i;
+
+    if (cv) {
+        PADLIST * const padlist = CvPADLIST(cv);
+        namepad = PadlistNAMES(padlist);
+    }
+
+    if (paren)
+        sv_catpvs_nomg(out, "(");
+    for (i = 0; i < n; i++) {
+        if (namepad && (sv = padnamelist_fetch(namepad, off + i)))
+        {
+            STRLEN cur = SvCUR(out);
+            Perl_sv_catpvf(aTHX_ out, "[%"UTF8f,
+                                 UTF8fARG(1, PadnameLEN(sv) - 1,
+                                          PadnamePV(sv) + 1));
+            if (is_scalar)
+                SvPVX(out)[cur] = '$';
+        }
+        else
+            Perl_sv_catpvf(aTHX_ out, "[%"UVuf"]", (UV)(off+i));
+        if (i < n - 1)
+            sv_catpvs_nomg(out, ",");
+    }
+    if (paren)
+        sv_catpvs_nomg(out, "(");
+}
+
+
+static void
+S_append_gv_name(pTHX_ GV *gv, SV *out)
+{
+    SV *sv;
+    if (!gv) {
+        sv_catpvs_nomg(out, "<NULLGV>");
+        return;
+    }
+    sv = newSV(0);
+    gv_fullname4(sv, gv, NULL, FALSE);
+    Perl_sv_catpvf(aTHX_ out, "$%"SVf, SVfARG(sv));
+    SvREFCNT_dec_NN(sv);
+}
+
+#ifdef USE_ITHREADS
+#  define ITEM_SV(item) (comppad ? \
+    *av_fetch(comppad, (item)->pad_offset, FALSE) : NULL);
+#else
+#  define ITEM_SV(item) UNOP_AUX_item_sv(item)
+#endif
+
+
+/* return a temporary SV containing a stringified representation of
+ * the op_aux field of a MULTIDEREF op, associated with CV cv
+ */
+
+SV*
+Perl_multideref_stringify(pTHX_ const OP *o, CV *cv)
+{
+    UNOP_AUX_item *items = cUNOP_AUXo->op_aux;
+    UV actions = items->uv;
+    SV *sv;
+    bool last = 0;
+    bool is_hash = FALSE;
+    int derefs = 0;
+    SV *out = newSVpvn_flags("",0,SVs_TEMP);
+#ifdef USE_ITHREADS
+    PAD *comppad;
+
+    if (cv) {
+        PADLIST *padlist = CvPADLIST(cv);
+        comppad = PadlistARRAY(padlist)[1];
+    }
+    else
+        comppad = NULL;
+#endif
+
+    PERL_ARGS_ASSERT_MULTIDEREF_STRINGIFY;
+
+    while (!last) {
+        switch (actions & MDEREF_ACTION_MASK) {
+
+        case MDEREF_reload:
+            actions = (++items)->uv;
+            continue;
+            NOT_REACHED; /* NOTREACHED */
+
+        case MDEREF_HV_padhv_helem:
+            is_hash = TRUE;
+            /* FALLTHROUGH */
+        case MDEREF_AV_padav_aelem:
+            derefs = 1;
+            S_append_padvar(aTHX_ (++items)->pad_offset, cv, out, 1, 0, 1);
+            goto do_elem;
+            NOT_REACHED; /* NOTREACHED */
+
+        case MDEREF_HV_gvhv_helem:
+            is_hash = TRUE;
+            /* FALLTHROUGH */
+        case MDEREF_AV_gvav_aelem:
+            derefs = 1;
+            items++;
+            sv = ITEM_SV(items);
+            S_append_gv_name(aTHX_ (GV*)sv, out);
+            goto do_elem;
+            NOT_REACHED; /* NOTREACHED */
+
+        case MDEREF_HV_gvsv_vivify_rv2hv_helem:
+            is_hash = TRUE;
+            /* FALLTHROUGH */
+        case MDEREF_AV_gvsv_vivify_rv2av_aelem:
+            items++;
+            sv = ITEM_SV(items);
+            S_append_gv_name(aTHX_ (GV*)sv, out);
+            goto do_vivify_rv2xv_elem;
+            NOT_REACHED; /* NOTREACHED */
+
+        case MDEREF_HV_padsv_vivify_rv2hv_helem:
+            is_hash = TRUE;
+            /* FALLTHROUGH */
+        case MDEREF_AV_padsv_vivify_rv2av_aelem:
+            S_append_padvar(aTHX_ (++items)->pad_offset, cv, out, 1, 0, 1);
+            goto do_vivify_rv2xv_elem;
+            NOT_REACHED; /* NOTREACHED */
+
+        case MDEREF_HV_pop_rv2hv_helem:
+        case MDEREF_HV_vivify_rv2hv_helem:
+            is_hash = TRUE;
+            /* FALLTHROUGH */
+        do_vivify_rv2xv_elem:
+        case MDEREF_AV_pop_rv2av_aelem:
+        case MDEREF_AV_vivify_rv2av_aelem:
+            if (!derefs++)
+                sv_catpvs_nomg(out, "->");
+        do_elem:
+            if ((actions & MDEREF_INDEX_MASK)== MDEREF_INDEX_none) {
+                sv_catpvs_nomg(out, "->");
+                last = 1;
+                break;
+            }
+
+            sv_catpvn_nomg(out, (is_hash ? "{" : "["), 1);
+            switch (actions & MDEREF_INDEX_MASK) {
+            case MDEREF_INDEX_const:
+                if (is_hash) {
+                    items++;
+                    sv = ITEM_SV(items);
+                    if (!sv)
+                        sv_catpvs_nomg(out, "???");
+                    else {
+                        STRLEN cur;
+                        char *s;
+                        s = SvPV(sv, cur);
+                        pv_pretty(out, s, cur, 30,
+                                    NULL, NULL,
+                                    (PERL_PV_PRETTY_NOCLEAR
+                                    |PERL_PV_PRETTY_QUOTE
+                                    |PERL_PV_PRETTY_ELLIPSES));
+                    }
+                }
+                else
+                    Perl_sv_catpvf(aTHX_ out, "%"IVdf, (++items)->iv);
+                break;
+            case MDEREF_INDEX_padsv:
+                S_append_padvar(aTHX_ (++items)->pad_offset, cv, out, 1, 0, 1);
+                break;
+            case MDEREF_INDEX_gvsv:
+                items++;
+                sv = ITEM_SV(items);
+                S_append_gv_name(aTHX_ (GV*)sv, out);
+                break;
+            }
+            sv_catpvn_nomg(out, (is_hash ? "}" : "]"), 1);
+
+            if (actions & MDEREF_FLAG_last)
+                last = 1;
+            is_hash = FALSE;
+
+            break;
+
+        default:
+            PerlIO_printf(Perl_debug_log, "UNKNOWN(%d)",
+                (int)(actions & MDEREF_ACTION_MASK));
+            last = 1;
+            break;
+
+        } /* switch */
+
+        actions >>= MDEREF_SHIFT;
+    } /* while */
+    return out;
+}
+
+
 I32
 Perl_debop(pTHX_ const OP *o)
 {
-    int count;
-
     PERL_ARGS_ASSERT_DEBOP;
 
     if (CopSTASH_eq(PL_curcop, PL_debstash) && !DEBUG_J_TEST_)
@@ -2388,12 +2485,20 @@ Perl_debop(pTHX_ const OP *o)
        break;
     case OP_GVSV:
     case OP_GV:
-       if (cGVOPo_gv) {
+       if (cGVOPo_gv && isGV(cGVOPo_gv)) {
            SV * const sv = newSV(0);
            gv_fullname3(sv, cGVOPo_gv, NULL);
            PerlIO_printf(Perl_debug_log, "(%s)", SvPV_nolen_const(sv));
            SvREFCNT_dec_NN(sv);
        }
+       else if (cGVOPo_gv) {
+           SV * const sv = newSV(0);
+           assert(SvROK(cGVOPo_gv));
+           assert(SvTYPE(SvRV(cGVOPo_gv)) == SVt_PVCV);
+           PerlIO_printf(Perl_debug_log, "(cv ref: %s)",
+                   SvPV_nolen_const(cv_name((CV *)SvRV(cGVOPo_gv),sv,0)));
+           SvREFCNT_dec_NN(sv);
+       }
        else
            PerlIO_printf(Perl_debug_log, "(NULL)");
        break;
@@ -2401,35 +2506,17 @@ Perl_debop(pTHX_ const OP *o)
     case OP_PADSV:
     case OP_PADAV:
     case OP_PADHV:
-        count = 1;
-        goto dump_padop;
+        S_deb_padvar(aTHX_ o->op_targ, 1, 1);
+        break;
+
     case OP_PADRANGE:
-        count = o->op_private & OPpPADRANGE_COUNTMASK;
-    dump_padop:
-       /* print the lexical's name */
-        {
-            CV * const cv = deb_curcv(cxstack_ix);
-            SV *sv;
-            PAD * comppad = NULL;
-            int i;
-
-            if (cv) {
-                PADLIST * const padlist = CvPADLIST(cv);
-                comppad = *PadlistARRAY(padlist);
-            }
-            PerlIO_printf(Perl_debug_log, "(");
-            for (i = 0; i < count; i++) {
-                if (comppad &&
-                        (sv = *av_fetch(comppad, o->op_targ + i, FALSE)))
-                    PerlIO_printf(Perl_debug_log, "%s", SvPV_nolen_const(sv));
-                else
-                    PerlIO_printf(Perl_debug_log, "[%"UVuf"]",
-                            (UV)o->op_targ+i);
-                if (i < count-1)
-                    PerlIO_printf(Perl_debug_log, ",");
-            }
-            PerlIO_printf(Perl_debug_log, ")");
-        }
+        S_deb_padvar(aTHX_ o->op_targ,
+                        o->op_private & OPpPADRANGE_COUNTMASK, 1);
+        break;
+
+    case OP_MULTIDEREF:
+        PerlIO_printf(Perl_debug_log, "(%"SVf")",
+            SVfARG(multideref_stringify(o, deb_curcv(cxstack_ix))));
         break;
 
     default:
@@ -2440,19 +2527,27 @@ Perl_debop(pTHX_ const OP *o)
 }
 
 STATIC CV*
-S_deb_curcv(pTHX_ const I32 ix)
+S_deb_curcv(pTHX_ I32 ix)
 {
-    const PERL_CONTEXT * const cx = &cxstack[ix];
-    if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT)
-        return cx->blk_sub.cv;
-    else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
-        return cx->blk_eval.cv;
-    else if (ix == 0 && PL_curstackinfo->si_type == PERLSI_MAIN)
-        return PL_main_cv;
-    else if (ix <= 0)
-        return NULL;
-    else
-        return deb_curcv(ix - 1);
+    PERL_SI *si = PL_curstackinfo;
+    for (; ix >=0; ix--) {
+        const PERL_CONTEXT * const cx = &(si->si_cxstack)[ix];
+
+        if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT)
+            return cx->blk_sub.cv;
+        else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
+            return cx->blk_eval.cv;
+        else if (ix == 0 && si->si_type == PERLSI_MAIN)
+            return PL_main_cv;
+        else if (ix == 0 && CxTYPE(cx) == CXt_NULL
+               && si->si_type == PERLSI_SORT)
+        {
+            /* fake sort sub; use CV of caller */
+            si = si->si_prev;
+            ix = si->si_cxix + 1;
+        }
+    }
+    return NULL;
 }
 
 void
@@ -2494,11 +2589,5 @@ Perl_debprofdump(pTHX)
 
 
 /*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
  * ex: set ts=8 sts=4 sw=4 et:
  */