add ext/Devel/Peek

	Message-ID: <36589ec9.49964585@smtp1.ibm.net>
	Subject: [PATCH 5.005_53] Devel::Peek integration

p4raw-id: //depot/perl@2322

1 files changed, 839 insertions, 139 deletions

diff --git a/dump.c b/dump.c
index 8b73a9aaed..85cdddb1d1 100644
--- a/dump.c
+++ b/dump.c
@@ -15,26 +15,35 @@
 #include "EXTERN.h"
 #include "perl.h"
 
-#ifndef PERL_OBJECT
-static void dump(char *pat, ...);
-#endif /* PERL_OBJECT */
+#ifndef DBL_DIG
+#define DBL_DIG	15   /* A guess that works lots of places */
+#endif
+
+void
+dump_indent(I32 level, PerlIO *file, const char* pat, ...)
+{
+    dTHR;
+    va_list args;
+    
+    va_start(args, pat);
+    PerlIO_printf(file, "%*s", level*PL_dumpindent, "");
+    PerlIO_vprintf(file, pat, args);
+    va_end(args);
+}
 
 void
 dump_all(void)
 {
-#ifdef DEBUGGING
     dTHR;
     PerlIO_setlinebuf(Perl_debug_log);
     if (PL_main_root)
-	dump_op(PL_main_root);
+	op_dump(PL_main_root);
     dump_packsubs(PL_defstash);
-#endif	/* DEBUGGING */
 }
 
 void
 dump_packsubs(HV *stash)
 {
-#ifdef DEBUGGING
     dTHR;
     I32	i;
     HE	*entry;
@@ -56,78 +65,326 @@ dump_packsubs(HV *stash)
 		dump_packsubs(hv);		/* nested package */
 	}
     }
-#endif	/* DEBUGGING */
 }
 
 void
 dump_sub(GV *gv)
 {
-#ifdef DEBUGGING
     SV *sv = sv_newmortal();
 
     gv_fullname3(sv, gv, Nullch);
-    dump("\nSUB %s = ", SvPVX(sv));
+    dump_indent(0, Perl_debug_log, "\nSUB %s = ", SvPVX(sv));
     if (CvXSUB(GvCV(gv)))
-	dump("(xsub 0x%x %d)\n",
+	dump_indent(0, Perl_debug_log, "(xsub 0x%x %d)\n",
 	    (long)CvXSUB(GvCV(gv)),
 	    CvXSUBANY(GvCV(gv)).any_i32);
     else if (CvROOT(GvCV(gv)))
-	dump_op(CvROOT(GvCV(gv)));
+	op_dump(CvROOT(GvCV(gv)));
     else
-	dump("<undef>\n");
-#endif	/* DEBUGGING */
+	dump_indent(0, Perl_debug_log, "<undef>\n");
 }
 
 void
 dump_form(GV *gv)
 {
-#ifdef DEBUGGING
     SV *sv = sv_newmortal();
 
     gv_fullname3(sv, gv, Nullch);
-    dump("\nFORMAT %s = ", SvPVX(sv));
+    dump_indent(0, Perl_debug_log, "\nFORMAT %s = ", SvPVX(sv));
     if (CvROOT(GvFORM(gv)))
-	dump_op(CvROOT(GvFORM(gv)));
+	op_dump(CvROOT(GvFORM(gv)));
     else
-	dump("<undef>\n");
-#endif	/* DEBUGGING */
+	dump_indent(0, Perl_debug_log, "<undef>\n");
 }
 
 void
 dump_eval(void)
 {
-#ifdef DEBUGGING
-    dump_op(PL_eval_root);
-#endif	/* DEBUGGING */
+    op_dump(PL_eval_root);
+}
+
+char *
+pv_display(SV *sv, char *pv, STRLEN cur, STRLEN len, STRLEN pvlim)
+{
+    int truncated = 0;
+    int nul_terminated = len > cur && pv[cur] == '\0';
+
+    sv_setpvn(sv, "\"", 1);
+    for (; cur--; pv++) {
+	if (pvlim && SvCUR(sv) >= pvlim) {
+            truncated++;
+	    break;
+        }
+        if (isPRINT(*pv)) {
+            switch (*pv) {
+	    case '\t': sv_catpvn(sv, "\\t", 2);  break;
+	    case '\n': sv_catpvn(sv, "\\n", 2);  break;
+	    case '\r': sv_catpvn(sv, "\\r", 2);  break;
+	    case '\f': sv_catpvn(sv, "\\f", 2);  break;
+	    case '"':  sv_catpvn(sv, "\\\"", 2); break;
+	    case '\\': sv_catpvn(sv, "\\\\", 2); break;
+	    default:   sv_catpvn(sv, pv, 1);     break;
+            }
+        }
+	else {
+	    if (cur && isDIGIT(*(pv+1)))
+		sv_catpvf(sv, "\\%03o", *pv);
+	    else
+		sv_catpvf(sv, "\\%o", *pv);
+        }
+    }
+    sv_catpvn(sv, "\"", 1);
+    if (truncated)
+	sv_catpvn(sv, "...", 3);
+    if (nul_terminated)
+	sv_catpvn(sv, "\\0", 2);
+
+    return SvPVX(sv);
+}
+
+char *
+sv_peek(SV *sv)
+{
+    SV *t = sv_newmortal();
+    STRLEN prevlen;
+    int unref = 0;
+
+    sv_setpvn(t, "", 0);
+  retry:
+    if (!sv) {
+	sv_catpv(t, "VOID");
+	goto finish;
+    }
+    else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
+	sv_catpv(t, "WILD");
+	goto finish;
+    }
+    else if (sv == &PL_sv_undef || sv == &PL_sv_no || sv == &PL_sv_yes) {
+	if (sv == &PL_sv_undef) {
+	    sv_catpv(t, "SV_UNDEF");
+	    if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
+				 SVs_GMG|SVs_SMG|SVs_RMG)) &&
+		SvREADONLY(sv))
+		goto finish;
+	}
+	else if (sv == &PL_sv_no) {
+	    sv_catpv(t, "SV_NO");
+	    if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
+				 SVs_GMG|SVs_SMG|SVs_RMG)) &&
+		!(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
+				  SVp_POK|SVp_NOK)) &&
+		SvCUR(sv) == 0 &&
+		SvNVX(sv) == 0.0)
+		goto finish;
+	}
+	else {
+	    sv_catpv(t, "SV_YES");
+	    if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
+				 SVs_GMG|SVs_SMG|SVs_RMG)) &&
+		!(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
+				  SVp_POK|SVp_NOK)) &&
+		SvCUR(sv) == 1 &&
+		SvPVX(sv) && *SvPVX(sv) == '1' &&
+		SvNVX(sv) == 1.0)
+		goto finish;
+	}
+	sv_catpv(t, ":");
+    }
+    else if (SvREFCNT(sv) == 0) {
+	sv_catpv(t, "(");
+	unref++;
+    }
+    if (SvROK(sv)) {
+	sv_catpv(t, "\\");
+	if (SvCUR(t) + unref > 10) {
+	    SvCUR(t) = unref + 3;
+	    *SvEND(t) = '\0';
+	    sv_catpv(t, "...");
+	    goto finish;
+	}
+	sv = (SV*)SvRV(sv);
+	goto retry;
+    }
+    switch (SvTYPE(sv)) {
+    default:
+	sv_catpv(t, "FREED");
+	goto finish;
+
+    case SVt_NULL:
+	sv_catpv(t, "UNDEF");
+	goto finish;
+    case SVt_IV:
+	sv_catpv(t, "IV");
+	break;
+    case SVt_NV:
+	sv_catpv(t, "NV");
+	break;
+    case SVt_RV:
+	sv_catpv(t, "RV");
+	break;
+    case SVt_PV:
+	sv_catpv(t, "PV");
+	break;
+    case SVt_PVIV:
+	sv_catpv(t, "PVIV");
+	break;
+    case SVt_PVNV:
+	sv_catpv(t, "PVNV");
+	break;
+    case SVt_PVMG:
+	sv_catpv(t, "PVMG");
+	break;
+    case SVt_PVLV:
+	sv_catpv(t, "PVLV");
+	break;
+    case SVt_PVAV:
+	sv_catpv(t, "AV");
+	break;
+    case SVt_PVHV:
+	sv_catpv(t, "HV");
+	break;
+    case SVt_PVCV:
+	if (CvGV(sv))
+	    sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv)));
+	else
+	    sv_catpv(t, "CV()");
+	goto finish;
+    case SVt_PVGV:
+	sv_catpv(t, "GV");
+	break;
+    case SVt_PVBM:
+	sv_catpv(t, "BM");
+	break;
+    case SVt_PVFM:
+	sv_catpv(t, "FM");
+	break;
+    case SVt_PVIO:
+	sv_catpv(t, "IO");
+	break;
+    }
+
+    if (SvPOKp(sv)) {
+	if (!SvPVX(sv))
+	    sv_catpv(t, "(null)");
+	else {
+	    SV *tmp = newSVpv("", 0);
+	    sv_catpv(t, "(");
+	    if (SvOOK(sv))
+		sv_catpvf(t, "[%s]", pv_display(tmp, SvPVX(sv)-SvIVX(sv), SvIVX(sv), 0, 127));
+	    sv_catpvf(t, "%s)", pv_display(tmp, SvPVX(sv), SvCUR(sv), SvLEN(sv), 127));
+	    SvREFCNT_dec(tmp);
+	}
+    }
+    else if (SvNOKp(sv)) {
+	SET_NUMERIC_STANDARD();
+	sv_catpvf(t, "(%g)",SvNVX(sv));
+    }
+    else if (SvIOKp(sv))
+	sv_catpvf(t, "(%ld)",(long)SvIVX(sv));
+    else
+	sv_catpv(t, "()");
+    
+  finish:
+    if (unref) {
+	while (unref--)
+	    sv_catpv(t, ")");
+    }
+    return SvPV(t, PL_na);
+}
+
+void
+do_pmop_dump(I32 level, PerlIO *file, PMOP *pm)
+{
+    char ch;
+
+    if (!pm) {
+	dump_indent(level, file, "{}\n");
+	return;
+    }
+    dump_indent(level, file, "{\n");
+    level++;
+    if (pm->op_pmflags & PMf_ONCE)
+	ch = '?';
+    else
+	ch = '/';
+    if (pm->op_pmregexp)
+	dump_indent(level, file, "PMf_PRE %c%s%c%s\n",
+	     ch, pm->op_pmregexp->precomp, ch,
+	     (pm->op_private & OPpRUNTIME) ? " (RUNTIME)" : "");
+    else
+	dump_indent(level, file, "PMf_PRE (RUNTIME)\n");
+    if (pm->op_type != OP_PUSHRE && pm->op_pmreplroot) {
+	dump_indent(level, file, "PMf_REPL = ");
+	op_dump(pm->op_pmreplroot);
+    }
+    if (pm->op_pmflags || (pm->op_pmregexp && pm->op_pmregexp->check_substr)) {
+	SV *tmpsv = newSVpv("", 0);
+	if (pm->op_pmdynflags & PMdf_USED)
+	    sv_catpv(tmpsv, ",USED");
+	if (pm->op_pmdynflags & PMdf_TAINTED)
+	    sv_catpv(tmpsv, ",TAINTED");
+	if (pm->op_pmflags & PMf_ONCE)
+	    sv_catpv(tmpsv, ",ONCE");
+	if (pm->op_pmregexp && pm->op_pmregexp->check_substr
+	    && !(pm->op_pmregexp->reganch & ROPT_NOSCAN))
+	    sv_catpv(tmpsv, ",SCANFIRST");
+	if (pm->op_pmregexp && pm->op_pmregexp->check_substr
+	    && pm->op_pmregexp->reganch & ROPT_CHECK_ALL)
+	    sv_catpv(tmpsv, ",ALL");
+	if (pm->op_pmflags & PMf_SKIPWHITE)
+	    sv_catpv(tmpsv, ",SKIPWHITE");
+	if (pm->op_pmflags & PMf_CONST)
+	    sv_catpv(tmpsv, ",CONST");
+	if (pm->op_pmflags & PMf_KEEP)
+	    sv_catpv(tmpsv, ",KEEP");
+	if (pm->op_pmflags & PMf_GLOBAL)
+	    sv_catpv(tmpsv, ",GLOBAL");
+	if (pm->op_pmflags & PMf_CONTINUE)
+	    sv_catpv(tmpsv, ",CONTINUE");
+	if (pm->op_pmflags & PMf_RETAINT)
+	    sv_catpv(tmpsv, ",RETAINT");
+	if (pm->op_pmflags & PMf_EVAL)
+	    sv_catpv(tmpsv, ",EVAL");
+	dump_indent(level, file, "PMFLAGS = (%s)\n", SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");
+	SvREFCNT_dec(tmpsv);
+    }
+
+    dump_indent(level-1, file, "}\n");
+}
+
+void
+pmop_dump(PMOP *pm)
+{
+    do_pmop_dump(0, Perl_debug_log, pm);
 }
 
 void
-dump_op(OP *o)
+do_op_dump(I32 level, PerlIO *file, OP *o)
 {
-#ifdef DEBUGGING
-    dump("{\n");
+    dTHR;
+    dump_indent(level, file, "{\n");
+    level++;
     if (o->op_seq)
-	PerlIO_printf(Perl_debug_log, "%-4d", o->op_seq);
+	PerlIO_printf(file, "%-4d", o->op_seq);
     else
-	PerlIO_printf(Perl_debug_log, "    ");
-    dump("TYPE = %s  ===> ", PL_op_name[o->op_type]);
+	PerlIO_printf(file, "    ");
+    PerlIO_printf(file, "%*sTYPE = %s  ===> ", PL_dumpindent*level-4, "", PL_op_name[o->op_type]);
     if (o->op_next) {
 	if (o->op_seq)
-	    PerlIO_printf(Perl_debug_log, "%d\n", o->op_next->op_seq);
+	    PerlIO_printf(file, "%d\n", o->op_next->op_seq);
 	else
-	    PerlIO_printf(Perl_debug_log, "(%d)\n", o->op_next->op_seq);
+	    PerlIO_printf(file, "(%d)\n", o->op_next->op_seq);
     }
     else
-	PerlIO_printf(Perl_debug_log, "DONE\n");
-    PL_dumplvl++;
+	PerlIO_printf(file, "DONE\n");
     if (o->op_targ) {
 	if (o->op_type == OP_NULL)
-	    dump("  (was %s)\n", PL_op_name[o->op_targ]);
+	    dump_indent(level, file, "  (was %s)\n", PL_op_name[o->op_targ]);
 	else
-	    dump("TARG = %d\n", o->op_targ);
+	    dump_indent(level, file, "TARG = %d\n", o->op_targ);
     }
 #ifdef DUMPADDR
-    dump("ADDR = 0x%lx => 0x%lx\n",o, o->op_next);
+    dump_indent(level, file, "ADDR = 0x%lx => 0x%lx\n",o, o->op_next);
 #endif
     if (o->op_flags) {
 	SV *tmpsv = newSVpv("", 0);
@@ -157,7 +414,7 @@ dump_op(OP *o)
 	    sv_catpv(tmpsv, ",MOD");
 	if (o->op_flags & OPf_SPECIAL)
 	    sv_catpv(tmpsv, ",SPECIAL");
-	dump("FLAGS = (%s)\n", SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");
+	dump_indent(level, file, "FLAGS = (%s)\n", SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");
 	SvREFCNT_dec(tmpsv);
     }
     if (o->op_private) {
@@ -231,7 +488,7 @@ dump_op(OP *o)
 	if (o->op_flags & OPf_MOD && o->op_private & OPpLVAL_INTRO)
 	    sv_catpv(tmpsv, ",INTRO");
 	if (SvCUR(tmpsv))
-	    dump("PRIVATE = (%s)\n", SvPVX(tmpsv) + 1);
+	    dump_indent(level, file, "PRIVATE = (%s)\n", SvPVX(tmpsv) + 1);
 	SvREFCNT_dec(tmpsv);
     }
 
@@ -243,66 +500,66 @@ dump_op(OP *o)
 	    ENTER;
 	    SAVEFREESV(tmpsv);
 	    gv_fullname3(tmpsv, cGVOPo->op_gv, Nullch);
-	    dump("GV = %s\n", SvPV(tmpsv, PL_na));
+	    dump_indent(level, file, "GV = %s\n", SvPV(tmpsv, PL_na));
 	    LEAVE;
 	}
 	else
-	    dump("GV = NULL\n");
+	    dump_indent(level, file, "GV = NULL\n");
 	break;
     case OP_CONST:
-	dump("SV = %s\n", SvPEEK(cSVOPo->op_sv));
+	dump_indent(level, file, "SV = %s\n", SvPEEK(cSVOPo->op_sv));
 	break;
     case OP_NEXTSTATE:
     case OP_DBSTATE:
 	if (cCOPo->cop_line)
-	    dump("LINE = %d\n",cCOPo->cop_line);
+	    dump_indent(level, file, "LINE = %d\n",cCOPo->cop_line);
 	if (cCOPo->cop_label)
-	    dump("LABEL = \"%s\"\n",cCOPo->cop_label);
+	    dump_indent(level, file, "LABEL = \"%s\"\n",cCOPo->cop_label);
 	break;
     case OP_ENTERLOOP:
-	dump("REDO ===> ");
+	dump_indent(level, file, "REDO ===> ");
 	if (cLOOPo->op_redoop)
-	    PerlIO_printf(Perl_debug_log, "%d\n", cLOOPo->op_redoop->op_seq);
+	    PerlIO_printf(file, "%d\n", cLOOPo->op_redoop->op_seq);
 	else
-	    PerlIO_printf(Perl_debug_log, "DONE\n");
-	dump("NEXT ===> ");
+	    PerlIO_printf(file, "DONE\n");
+	dump_indent(level, file, "NEXT ===> ");
 	if (cLOOPo->op_nextop)
-	    PerlIO_printf(Perl_debug_log, "%d\n", cLOOPo->op_nextop->op_seq);
+	    PerlIO_printf(file, "%d\n", cLOOPo->op_nextop->op_seq);
 	else
-	    PerlIO_printf(Perl_debug_log, "DONE\n");
-	dump("LAST ===> ");
+	    PerlIO_printf(file, "DONE\n");
+	dump_indent(level, file, "LAST ===> ");
 	if (cLOOPo->op_lastop)
-	    PerlIO_printf(Perl_debug_log, "%d\n", cLOOPo->op_lastop->op_seq);
+	    PerlIO_printf(file, "%d\n", cLOOPo->op_lastop->op_seq);
 	else
-	    PerlIO_printf(Perl_debug_log, "DONE\n");
+	    PerlIO_printf(file, "DONE\n");
 	break;
     case OP_COND_EXPR:
-	dump("TRUE ===> ");
+	dump_indent(level, file, "TRUE ===> ");
 	if (cCONDOPo->op_true)
-	    PerlIO_printf(Perl_debug_log, "%d\n", cCONDOPo->op_true->op_seq);
+	    PerlIO_printf(file, "%d\n", cCONDOPo->op_true->op_seq);
 	else
-	    PerlIO_printf(Perl_debug_log, "DONE\n");
-	dump("FALSE ===> ");
+	    PerlIO_printf(file, "DONE\n");
+	dump_indent(level, file, "FALSE ===> ");
 	if (cCONDOPo->op_false)
-	    PerlIO_printf(Perl_debug_log, "%d\n", cCONDOPo->op_false->op_seq);
+	    PerlIO_printf(file, "%d\n", cCONDOPo->op_false->op_seq);
 	else
-	    PerlIO_printf(Perl_debug_log, "DONE\n");
+	    PerlIO_printf(file, "DONE\n");
 	break;
     case OP_MAPWHILE:
     case OP_GREPWHILE:
     case OP_OR:
     case OP_AND:
-	dump("OTHER ===> ");
+	dump_indent(level, file, "OTHER ===> ");
 	if (cLOGOPo->op_other)
-	    PerlIO_printf(Perl_debug_log, "%d\n", cLOGOPo->op_other->op_seq);
+	    PerlIO_printf(file, "%d\n", cLOGOPo->op_other->op_seq);
 	else
-	    PerlIO_printf(Perl_debug_log, "DONE\n");
+	    PerlIO_printf(file, "DONE\n");
 	break;
     case OP_PUSHRE:
     case OP_MATCH:
     case OP_QR:
     case OP_SUBST:
-	dump_pm(cPMOPo);
+	do_pmop_dump(level, file, cPMOPo);
 	break;
     default:
 	break;
@@ -310,17 +567,20 @@ dump_op(OP *o)
     if (o->op_flags & OPf_KIDS) {
 	OP *kid;
 	for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling)
-	    dump_op(kid);
+	    do_op_dump(level, file, kid);
     }
-    PL_dumplvl--;
-    dump("}\n");
-#endif	/* DEBUGGING */
+    dump_indent(level-1, file, "}\n");
+}
+
+void
+op_dump(OP *o)
+{
+    do_op_dump(0, Perl_debug_log, o);
 }
 
 void
-dump_gv(GV *gv)
+gv_dump(GV *gv)
 {
-#ifdef DEBUGGING
     SV *sv;
 
     if (!gv) {
@@ -328,95 +588,535 @@ dump_gv(GV *gv)
 	return;
     }
     sv = sv_newmortal();
-    PL_dumplvl++;
     PerlIO_printf(Perl_debug_log, "{\n");
     gv_fullname3(sv, gv, Nullch);
-    dump("GV_NAME = %s", SvPVX(sv));
+    dump_indent(1, Perl_debug_log, "GV_NAME = %s", SvPVX(sv));
     if (gv != GvEGV(gv)) {
 	gv_efullname3(sv, GvEGV(gv), Nullch);
-	dump("-> %s", SvPVX(sv));
+	dump_indent(1, Perl_debug_log, "-> %s", SvPVX(sv));
     }
-    dump("\n");
-    PL_dumplvl--;
-    dump("}\n");
-#endif	/* DEBUGGING */
+    PerlIO_putc(Perl_debug_log, '\n');
+    dump_indent(0, Perl_debug_log, "}\n");
 }
 
 void
-dump_pm(PMOP *pm)
+do_magic_dump(I32 level, PerlIO *file, MAGIC *mg, I32 nest, I32 maxnest, bool dumpops, STRLEN pvlim)
 {
-#ifdef DEBUGGING
-    char ch;
+    for (; mg; mg = mg->mg_moremagic) {
+ 	dump_indent(level, file, "  MAGIC = 0x%lx\n", (long)mg);
+ 	if (mg->mg_virtual) {
+            MGVTBL *v = mg->mg_virtual;
+ 	    char *s = 0;
+ 	    if      (v == &PL_vtbl_sv)         s = "sv";
+            else if (v == &PL_vtbl_env)        s = "env";
+            else if (v == &PL_vtbl_envelem)    s = "envelem";
+            else if (v == &PL_vtbl_sig)        s = "sig";
+            else if (v == &PL_vtbl_sigelem)    s = "sigelem";
+            else if (v == &PL_vtbl_pack)       s = "pack";
+            else if (v == &PL_vtbl_packelem)   s = "packelem";
+            else if (v == &PL_vtbl_dbline)     s = "dbline";
+            else if (v == &PL_vtbl_isa)        s = "isa";
+            else if (v == &PL_vtbl_arylen)     s = "arylen";
+            else if (v == &PL_vtbl_glob)       s = "glob";
+            else if (v == &PL_vtbl_mglob)      s = "mglob";
+            else if (v == &PL_vtbl_nkeys)      s = "nkeys";
+            else if (v == &PL_vtbl_taint)      s = "taint";
+            else if (v == &PL_vtbl_substr)     s = "substr";
+            else if (v == &PL_vtbl_vec)        s = "vec";
+            else if (v == &PL_vtbl_pos)        s = "pos";
+            else if (v == &PL_vtbl_bm)         s = "bm";
+            else if (v == &PL_vtbl_fm)         s = "fm";
+            else if (v == &PL_vtbl_uvar)       s = "uvar";
+            else if (v == &PL_vtbl_defelem)    s = "defelem";
+#ifdef USE_LOCALE_COLLATE
+	    else if (v == &PL_vtbl_collxfrm)   s = "collxfrm";
+#endif
+#ifdef OVERLOAD
+	    else if (v == &PL_vtbl_amagic)     s = "amagic";
+	    else if (v == &PL_vtbl_amagicelem) s = "amagicelem";
+#endif
+	    if (s)
+	        dump_indent(level, file, "    MG_VIRTUAL = &PL_vtbl_%s\n", s);
+	    else
+	        dump_indent(level, file, "    MG_VIRTUAL = 0x%lx\n", (long)v);
+        }
+	else
+	    dump_indent(level, file, "    MG_VIRTUAL = 0\n");
 
-    if (!pm) {
-	dump("{}\n");
-	return;
+	if (mg->mg_private)
+	    dump_indent(level, file, "    MG_PRIVATE = %d\n", mg->mg_private);
+
+	if (isPRINT(mg->mg_type))
+	    dump_indent(level, file, "    MG_TYPE = '%c'\n", mg->mg_type);
+	else
+	    dump_indent(level, file, "    MG_TYPE = '\\%o'\n", mg->mg_type);
+
+        if (mg->mg_flags) {
+            dump_indent(level, file, "    MG_FLAGS = 0x%02X\n", mg->mg_flags);
+	    if (mg->mg_flags & MGf_TAINTEDDIR)
+	        dump_indent(level, file, "      TAINTEDDIR\n");
+	    if (mg->mg_flags & MGf_REFCOUNTED)
+	        dump_indent(level, file, "      REFCOUNTED\n");
+            if (mg->mg_flags & MGf_GSKIP)
+	        dump_indent(level, file, "      GSKIP\n");
+	    if (mg->mg_flags & MGf_MINMATCH)
+	        dump_indent(level, file, "      MINMATCH\n");
+        }
+	if (mg->mg_obj) {
+	    dump_indent(level, file, "    MG_OBJ = 0x%lx\n", (long)mg->mg_obj);
+	    if (mg->mg_flags & MGf_REFCOUNTED)
+		do_sv_dump(level+2, file, mg->mg_obj, nest+1, maxnest, dumpops, pvlim); /* MG is already +1 */
+	}
+        if (mg->mg_len)
+	    dump_indent(level, file, "    MG_LEN = %d\n", mg->mg_len);
+        if (mg->mg_ptr) {
+	    dump_indent(level, file, "    MG_PTR = 0x%lx", (long)mg->mg_ptr);
+	    if (mg->mg_len >= 0) {
+		SV *sv = newSVpv("", 0);
+                PerlIO_printf(file, " %s", pv_display(sv, mg->mg_ptr, mg->mg_len, 0, pvlim));
+		SvREFCNT_dec(sv);
+            }
+	    else if (mg->mg_len == HEf_SVKEY) {
+		PerlIO_puts(file, " => HEf_SVKEY\n");
+		do_sv_dump(level+2, file, (SV*)((mg)->mg_ptr), nest+1, maxnest, dumpops, pvlim); /* MG is already +1 */
+		continue;
+	    }
+	    else
+		PerlIO_puts(file, " ???? - please notify IZ");
+            PerlIO_putc(file, '\n');
+        }
     }
-    dump("{\n");
-    PL_dumplvl++;
-    if (pm->op_pmflags & PMf_ONCE)
-	ch = '?';
+}
+
+void
+magic_dump(MAGIC *mg)
+{
+    do_magic_dump(0, Perl_debug_log, mg, 0, 0, 0, 0);
+}
+
+void
+do_hv_dump(I32 level, PerlIO *file, char *name, HV *sv)
+{
+    dump_indent(level, file, "%s = 0x%lx", name, (long)sv);
+    if (sv && HvNAME(sv))
+	PerlIO_printf(file, "\t\"%s\"\n", HvNAME(sv));
     else
-	ch = '/';
-    if (pm->op_pmregexp)
-	dump("PMf_PRE %c%s%c%s\n",
-	     ch, pm->op_pmregexp->precomp, ch,
-	     (pm->op_private & OPpRUNTIME) ? " (RUNTIME)" : "");
+	PerlIO_putc(file, '\n');
+}
+
+void
+do_gv_dump(I32 level, PerlIO *file, char *name, GV *sv)
+{
+    dump_indent(level, file, "%s = 0x%lx", name, (long)sv);
+    if (sv && GvNAME(sv))
+	PerlIO_printf(file, "\t\"%s\"\n", GvNAME(sv));
     else
-	dump("PMf_PRE (RUNTIME)\n");
-    if (pm->op_type != OP_PUSHRE && pm->op_pmreplroot) {
-	dump("PMf_REPL = ");
-	dump_op(pm->op_pmreplroot);
+	PerlIO_putc(file, '\n');
+}
+
+void
+do_gvgv_dump(I32 level, PerlIO *file, char *name, GV *sv)
+{
+    dump_indent(level, file, "%s = 0x%lx", name, (long)sv);
+    if (sv && GvNAME(sv)) {
+	PerlIO_printf(file, "\t\"");
+	if (GvSTASH(sv) && HvNAME(GvSTASH(sv)))
+	    PerlIO_printf(file, "%s\" :: \"", HvNAME(GvSTASH(sv)));
+	PerlIO_printf(file, "%s\"\n", GvNAME(sv));
     }
-    if (pm->op_pmflags || (pm->op_pmregexp && pm->op_pmregexp->check_substr)) {
-	SV *tmpsv = newSVpv("", 0);
-	if (pm->op_pmdynflags & PMdf_USED)
-	    sv_catpv(tmpsv, ",USED");
-	if (pm->op_pmdynflags & PMdf_TAINTED)
-	    sv_catpv(tmpsv, ",TAINTED");
-	if (pm->op_pmflags & PMf_ONCE)
-	    sv_catpv(tmpsv, ",ONCE");
-	if (pm->op_pmregexp && pm->op_pmregexp->check_substr
-	    && !(pm->op_pmregexp->reganch & ROPT_NOSCAN))
-	    sv_catpv(tmpsv, ",SCANFIRST");
-	if (pm->op_pmregexp && pm->op_pmregexp->check_substr
-	    && pm->op_pmregexp->reganch & ROPT_CHECK_ALL)
-	    sv_catpv(tmpsv, ",ALL");
-	if (pm->op_pmflags & PMf_SKIPWHITE)
-	    sv_catpv(tmpsv, ",SKIPWHITE");
-	if (pm->op_pmflags & PMf_CONST)
-	    sv_catpv(tmpsv, ",CONST");
-	if (pm->op_pmflags & PMf_KEEP)
-	    sv_catpv(tmpsv, ",KEEP");
-	if (pm->op_pmflags & PMf_GLOBAL)
-	    sv_catpv(tmpsv, ",GLOBAL");
-	if (pm->op_pmflags & PMf_CONTINUE)
-	    sv_catpv(tmpsv, ",CONTINUE");
-	if (pm->op_pmflags & PMf_RETAINT)
-	    sv_catpv(tmpsv, ",RETAINT");
-	if (pm->op_pmflags & PMf_EVAL)
-	    sv_catpv(tmpsv, ",EVAL");
-	dump("PMFLAGS = (%s)\n", SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");
-	SvREFCNT_dec(tmpsv);
+    else
+	PerlIO_putc(file, '\n');
+}
+
+void
+do_sv_dump(I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bool dumpops, STRLEN pvlim)
+{
+    dTHR;
+    SV *d = sv_newmortal();
+    char *s;
+    U32 flags;
+    U32 type;
+
+    if (!sv) {
+	dump_indent(level, file, "SV = 0\n");
+	return;
     }
+    
+    flags = SvFLAGS(sv);
+    type = SvTYPE(sv);
 
-    PL_dumplvl--;
-    dump("}\n");
-#endif	/* DEBUGGING */
-}
+    sv_setpvf(d, "(0x%lx) at 0x%lx\n%*s  REFCNT = %ld\n%*s  FLAGS = (",
+	      (unsigned long)SvANY(sv), (unsigned long)sv,
+	      PL_dumpindent*level, "", (long)SvREFCNT(sv),
+	      PL_dumpindent*level, "");
 
+    if (flags & SVs_PADBUSY)	sv_catpv(d, "PADBUSY,");
+    if (flags & SVs_PADTMP)	sv_catpv(d, "PADTMP,");
+    if (flags & SVs_PADMY)	sv_catpv(d, "PADMY,");
+    if (flags & SVs_TEMP)	sv_catpv(d, "TEMP,");
+    if (flags & SVs_OBJECT)	sv_catpv(d, "OBJECT,");
+    if (flags & SVs_GMG)	sv_catpv(d, "GMG,");
+    if (flags & SVs_SMG)	sv_catpv(d, "SMG,");
+    if (flags & SVs_RMG)	sv_catpv(d, "RMG,");
 
-STATIC void
-dump(char *pat,...)
-{
-#ifdef DEBUGGING
-    I32 i;
-    va_list args;
+    if (flags & SVf_IOK)	sv_catpv(d, "IOK,");
+    if (flags & SVf_NOK)	sv_catpv(d, "NOK,");
+    if (flags & SVf_POK)	sv_catpv(d, "POK,");
+    if (flags & SVf_ROK)	sv_catpv(d, "ROK,");
+    if (flags & SVf_OOK)	sv_catpv(d, "OOK,");
+    if (flags & SVf_FAKE)	sv_catpv(d, "FAKE,");
+    if (flags & SVf_READONLY)	sv_catpv(d, "READONLY,");
 
-    va_start(args, pat);
-    for (i = PL_dumplvl*4; i; i--)
-	(void)PerlIO_putc(Perl_debug_log,' ');
-    PerlIO_vprintf(Perl_debug_log,pat,args);
-    va_end(args);
-#endif	/* DEBUGGING */
+#ifdef OVERLOAD
+    if (flags & SVf_AMAGIC)	sv_catpv(d, "OVERLOAD,");
+#endif /* OVERLOAD */
+    if (flags & SVp_IOK)	sv_catpv(d, "pIOK,");
+    if (flags & SVp_NOK)	sv_catpv(d, "pNOK,");
+    if (flags & SVp_POK)	sv_catpv(d, "pPOK,");
+    if (flags & SVp_SCREAM)	sv_catpv(d, "SCREAM,");
+
+    switch (type) {
+    case SVt_PVCV:
+    case SVt_PVFM:
+	if (CvANON(sv))		sv_catpv(d, "ANON,");
+	if (CvUNIQUE(sv))	sv_catpv(d, "UNIQUE,");
+	if (CvCLONE(sv))	sv_catpv(d, "CLONE,");
+	if (CvCLONED(sv))	sv_catpv(d, "CLONED,");
+	if (CvNODEBUG(sv))	sv_catpv(d, "NODEBUG,");
+	break;
+    case SVt_PVHV:
+	if (HvSHAREKEYS(sv))	sv_catpv(d, "SHAREKEYS,");
+	if (HvLAZYDEL(sv))	sv_catpv(d, "LAZYDEL,");
+	break;
+    case SVt_PVGV:
+	if (GvINTRO(sv))	sv_catpv(d, "INTRO,");
+	if (GvMULTI(sv))	sv_catpv(d, "MULTI,");
+	if (GvASSUMECV(sv))	sv_catpv(d, "ASSUMECV,");
+	if (GvIMPORTED(sv)) {
+	    sv_catpv(d, "IMPORT");
+	    if (GvIMPORTED(sv) == GVf_IMPORTED)
+		sv_catpv(d, "ALL,");
+	    else {
+		sv_catpv(d, "(");
+		if (GvIMPORTED_SV(sv))	sv_catpv(d, " SV");
+		if (GvIMPORTED_AV(sv))	sv_catpv(d, " AV");
+		if (GvIMPORTED_HV(sv))	sv_catpv(d, " HV");
+		if (GvIMPORTED_CV(sv))	sv_catpv(d, " CV");
+		sv_catpv(d, " ),");
+	    }
+	}
+    case SVt_PVBM:
+	if (SvTAIL(sv))		sv_catpv(d, "TAIL,");
+	if (SvCOMPILED(sv))	sv_catpv(d, "COMPILED,");
+	break;
+    }
+
+    if (*(SvEND(d) - 1) == ',')
+	SvPVX(d)[--SvCUR(d)] = '\0';
+    sv_catpv(d, ")");
+    s = SvPVX(d);
+
+    dump_indent(level, file, "SV = ");
+    switch (type) {
+    case SVt_NULL:
+	PerlIO_printf(file, "NULL%s\n", s);
+	return;
+    case SVt_IV:
+	PerlIO_printf(file, "IV%s\n", s);
+	break;
+    case SVt_NV:
+	PerlIO_printf(file, "NV%s\n", s);
+	break;
+    case SVt_RV:
+	PerlIO_printf(file, "RV%s\n", s);
+	break;
+    case SVt_PV:
+	PerlIO_printf(file, "PV%s\n", s);
+	break;
+    case SVt_PVIV:
+	PerlIO_printf(file, "PVIV%s\n", s);
+	break;
+    case SVt_PVNV:
+	PerlIO_printf(file, "PVNV%s\n", s);
+	break;
+    case SVt_PVBM:
+	PerlIO_printf(file, "PVBM%s\n", s);
+	break;
+    case SVt_PVMG:
+	PerlIO_printf(file, "PVMG%s\n", s);
+	break;
+    case SVt_PVLV:
+	PerlIO_printf(file, "PVLV%s\n", s);
+	break;
+    case SVt_PVAV:
+	PerlIO_printf(file, "PVAV%s\n", s);
+	break;
+    case SVt_PVHV:
+	PerlIO_printf(file, "PVHV%s\n", s);
+	break;
+    case SVt_PVCV:
+	PerlIO_printf(file, "PVCV%s\n", s);
+	break;
+    case SVt_PVGV:
+	PerlIO_printf(file, "PVGV%s\n", s);
+	break;
+    case SVt_PVFM:
+	PerlIO_printf(file, "PVFM%s\n", s);
+	break;
+    case SVt_PVIO:
+	PerlIO_printf(file, "PVIO%s\n", s);
+	break;
+    default:
+	PerlIO_printf(file, "UNKNOWN(0x%x) %s\n", type, s);
+	return;
+    }
+    if (type >= SVt_PVIV || type == SVt_IV) {
+	dump_indent(level, file, "  IV = %ld", (long)SvIVX(sv));
+	if (SvOOK(sv))
+	    PerlIO_printf(file, "  (OFFSET)");
+	PerlIO_putc(file, '\n');
+    }
+    if (type >= SVt_PVNV || type == SVt_NV) {
+	SET_NUMERIC_STANDARD();
+	dump_indent(level, file, "  NV = %.*g\n", DBL_DIG, SvNVX(sv));
+    }
+    if (SvROK(sv)) {
+	dump_indent(level, file, "  RV = 0x%lx\n", (long)SvRV(sv));
+	if (nest < maxnest)
+	    do_sv_dump(level+1, file, SvRV(sv), nest+1, maxnest, dumpops, pvlim);
+	return;
+    }
+    if (type < SVt_PV)
+	return;
+    if (type <= SVt_PVLV) {
+	if (SvPVX(sv)) {
+	    dump_indent(level, file,"  PV = 0x%lx ", (long)SvPVX(sv));
+	    if (SvOOK(sv))
+		PerlIO_printf(file, "( %s . ) ", pv_display(d, SvPVX(sv)-SvIVX(sv), SvIVX(sv), 0, pvlim));
+	    PerlIO_printf(file, "%s\n", pv_display(d, SvPVX(sv), SvCUR(sv), SvLEN(sv), pvlim));
+	    dump_indent(level, file, "  CUR = 0\n", (long)SvCUR(sv));
+	    dump_indent(level, file, "  LEN = 0\n", (long)SvLEN(sv));
+	}
+	else
+	    dump_indent(level, file, "  PV = 0\n");
+    }
+    if (type >= SVt_PVMG) {
+	if (SvMAGIC(sv))
+            do_magic_dump(level, file, SvMAGIC(sv), nest, maxnest, dumpops, pvlim);
+	if (SvSTASH(sv))
+	    do_hv_dump(level, file, "  STASH", SvSTASH(sv));
+    }
+    switch (type) {
+    case SVt_PVLV:
+	dump_indent(level, file, "  TYPE = %c\n", LvTYPE(sv));
+	dump_indent(level, file, "  TARGOFF = %ld\n", (long)LvTARGOFF(sv));
+	dump_indent(level, file, "  TARGLEN = %ld\n", (long)LvTARGLEN(sv));
+	dump_indent(level, file, "  TARG = 0x%lx\n", (long)LvTARG(sv));
+	/* XXX level+1 ??? */
+	do_sv_dump(level, file, LvTARG(sv), nest+1, maxnest, dumpops, pvlim);
+	break;
+    case SVt_PVAV:
+	dump_indent(level, file, "  ARRAY = 0x%lx", (long)AvARRAY(sv));
+	if (AvARRAY(sv) != AvALLOC(sv)) {
+	    PerlIO_printf(file, " (offset=%d)\n", (AvARRAY(sv) - AvALLOC(sv)));
+	    dump_indent(level, file, "  ALLOC = 0x%lx\n", (long)AvALLOC(sv));
+	}
+	else
+	    PerlIO_putc(file, '\n');
+	dump_indent(level, file, "  FILL = %ld\n", (long)AvFILLp(sv));
+	dump_indent(level, file, "  MAX = %ld\n", (long)AvMAX(sv));
+	dump_indent(level, file, "  ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
+	flags = AvFLAGS(sv);
+	sv_setpv(d, "");
+	if (flags & AVf_REAL)	sv_catpv(d, ",REAL");
+	if (flags & AVf_REIFY)	sv_catpv(d, ",REIFY");
+	if (flags & AVf_REUSED)	sv_catpv(d, ",REUSED");
+	dump_indent(level, file, "  FLAGS = (%s)\n", SvCUR(d) ? SvPVX(d) + 1 : "");
+	if (nest < maxnest && av_len((AV*)sv) >= 0) {
+	    int count;
+	    for (count = 0; count <=  av_len((AV*)sv) && count < maxnest; count++) {
+		SV** elt = av_fetch((AV*)sv,count,0);
+
+		dump_indent(level + 1, file, "Elt No. %ld\n", (long)count);
+		if (elt) 
+		    do_sv_dump(level+1, file, *elt, nest+1, maxnest, dumpops, pvlim);
+	    }
+	}
+	break;
+    case SVt_PVHV:
+	dump_indent(level, file, "  ARRAY = 0x%lx",(long)HvARRAY(sv));
+	if (HvARRAY(sv) && HvKEYS(sv)) {
+	    /* Show distribution of HEs in the ARRAY */
+	    int freq[200];
+#define FREQ_MAX (sizeof freq / sizeof freq[0] - 1)
+	    int i;
+	    int max = 0;
+	    U32 pow2 = 2, keys = HvKEYS(sv);
+	    double theoret, sum = 0;
+
+	    PerlIO_printf(file, "  (");
+	    Zero(freq, FREQ_MAX + 1, int);
+	    for (i = 0; i <= HvMAX(sv); i++) {
+		HE* h; int count = 0;
+                for (h = HvARRAY(sv)[i]; h; h = HeNEXT(h))
+		    count++;
+		if (count > FREQ_MAX)
+		    count = FREQ_MAX;
+	        freq[count]++;
+	        if (max < count)
+		    max = count;
+	    }
+	    for (i = 0; i <= max; i++) {
+		if (freq[i]) {
+		    PerlIO_printf(file, "%d%s:%d", i,
+				  (i == FREQ_MAX) ? "+" : "",
+				  freq[i]);
+		    if (i != max)
+			PerlIO_printf(file, ", ");
+		}
+            }
+	    PerlIO_putc(file, ')');
+	    /* Now calculate quality wrt theoretical value */
+	    for (i = max; i > 0; i--) { /* Precision: count down. */
+		sum += freq[i] * i * i;
+            }
+	    while (keys = keys >> 1)
+		pow2 = pow2 << 1;
+	    /* Approximate by Poisson distribution */
+	    theoret = HvKEYS(sv);
+	    theoret += theoret * theoret/pow2;
+	    PerlIO_putc(file, '\n');
+	    dump_indent(level, file, "  hash quality = %.1f%%", theoret/sum*100);
+	}
+	PerlIO_putc(file, '\n');
+	dump_indent(level, file, "  KEYS = %ld\n", (long)HvKEYS(sv));
+	dump_indent(level, file, "  FILL = %ld\n", (long)HvFILL(sv));
+	dump_indent(level, file, "  MAX = %ld\n", (long)HvMAX(sv));
+	dump_indent(level, file, "  RITER = %ld\n", (long)HvRITER(sv));
+	dump_indent(level, file, "  EITER = 0x%lx\n",(long) HvEITER(sv));
+	if (HvPMROOT(sv))
+	    dump_indent(level, file, "  PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
+	if (HvNAME(sv))
+	    dump_indent(level, file, "  NAME = \"%s\"\n", HvNAME(sv));
+	if (nest < maxnest && !HvEITER(sv)) { /* Try to preserve iterator */
+	    HE *he;
+	    HV *hv = (HV*)sv;
+	    int count = maxnest - nest;
+
+	    hv_iterinit(hv);
+	    while ((he = hv_iternext(hv)) && count--) {
+		SV *elt;
+		char *key;
+		I32 len;
+		U32 hash = HeHASH(he);
+
+		key = hv_iterkey(he, &len);
+		elt = hv_iterval(hv, he);
+		dump_indent(level+1, file, "Elt %s HASH = 0x%lx\n", pv_display(d, key, len, 0, pvlim), hash);
+		do_sv_dump(level+1, file, elt, nest+1, maxnest, dumpops, pvlim);
+	    }
+	    hv_iterinit(hv);		/* Return to status quo */
+	}
+	break;
+    case SVt_PVCV:
+	if (SvPOK(sv))
+	    dump_indent(level, file, "  PROTOTYPE = \"%s\"\n", SvPV(sv,PL_na));
+	/* FALL THROUGH */
+    case SVt_PVFM:
+	do_hv_dump(level, file, "  COMP_STASH", CvSTASH(sv));
+	if (CvSTART(sv))
+	    dump_indent(level, file, "  START = 0x%lx ===> %d\n", (long)CvSTART(sv), CvSTART(sv)->op_seq);
+	dump_indent(level, file, "  ROOT = 0x%lx\n", (long)CvROOT(sv));
+        if (CvROOT(sv) && dumpops)
+	    do_op_dump(level+1, file, CvROOT(sv));
+	dump_indent (level, file, "  XSUB = 0x%lx\n", (long)CvXSUB(sv));
+	dump_indent (level, file, "  XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
+ 	do_gvgv_dump(level, file, "  GVGV::GV", CvGV(sv));
+	do_gv_dump  (level, file, "  FILEGV", CvFILEGV(sv));
+	dump_indent (level, file, "  DEPTH = %ld\n", (long)CvDEPTH(sv));
+#ifdef USE_THREADS
+	dump_indent (level, file, "  MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv));
+	dump_indent (level, file, "  OWNER = 0x%lx\n", (long)CvOWNER(sv));
+#endif /* USE_THREADS */
+	dump_indent (level, file, "  FLAGS = 0x%lx\n", (unsigned long)CvFLAGS(sv));
+	if (type == SVt_PVFM)
+	    dump_indent(level, file, "  LINES = %ld\n", (long)FmLINES(sv));
+	dump_indent(level, file, "  PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
+	if (nest < maxnest && CvPADLIST(sv)) {
+	    AV* padlist = CvPADLIST(sv);
+	    AV* pad_name = (AV*)*av_fetch(padlist, 0, FALSE);
+	    AV* pad = (AV*)*av_fetch(padlist, 1, FALSE);
+	    SV** pname = AvARRAY(pad_name);
+	    SV** ppad = AvARRAY(pad);
+	    I32 ix;
+
+	    for (ix = 1; ix <= AvFILL(pad_name); ix++) {
+		if (SvPOK(pname[ix]))
+		    dump_indent(level, /* %5d below is enough whitespace. */
+				file, 
+				"%5d. 0x%lx (%s\"%s\" %ld-%ld)\n",
+				ix, ppad[ix],
+				SvFAKE(pname[ix]) ? "FAKE " : "",
+				SvPVX(pname[ix]),
+				(long)I_32(SvNVX(pname[ix])),
+				(long)SvIVX(pname[ix]));
+	    }
+	}
+	{
+	    CV *outside = CvOUTSIDE(sv);
+	    dump_indent(level, file, "  OUTSIDE = 0x%lx (%s)\n", 
+			(long)outside, 
+			(!outside ? "null"
+			 : CvANON(outside) ? "ANON"
+			 : (outside == PL_main_cv) ? "MAIN"
+			 : CvUNIQUE(outside) ? "UNIQUE"
+			 : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED"));
+	}
+	if (nest < maxnest && (CvCLONE(sv) || CvCLONED(sv)))
+	    do_sv_dump(level+1, file, (SV*)CvOUTSIDE(sv), nest+1, maxnest, dumpops, pvlim);
+	break;
+    case SVt_PVGV:
+	dump_indent(level, file, "  NAME = \"%s\"\n", GvNAME(sv));
+	dump_indent(level, file, "  NAMELEN = %ld\n", (long)GvNAMELEN(sv));
+	do_hv_dump (level, file, "  GvSTASH", GvSTASH(sv));
+	dump_indent(level, file, "  GP = 0x%lx\n", (long)GvGP(sv));
+	dump_indent(level, file, "    SV = 0x%lx\n", (long)GvSV(sv));
+	dump_indent(level, file, "    REFCNT = %ld\n", (long)GvREFCNT(sv));
+	dump_indent(level, file, "    IO = 0x%lx\n", (long)GvIOp(sv));
+	dump_indent(level, file, "    FORM = 0x%lx\n", (long)GvFORM(sv));
+	dump_indent(level, file, "    AV = 0x%lx\n", (long)GvAV(sv));
+	dump_indent(level, file, "    HV = 0x%lx\n", (long)GvHV(sv));
+	dump_indent(level, file, "    CV = 0x%lx\n", (long)GvCV(sv));
+	dump_indent(level, file, "    CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
+	dump_indent(level, file, "    LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
+	dump_indent(level, file, "    LINE = %ld\n", (long)GvLINE(sv));
+	dump_indent(level, file, "    FLAGS = 0x%x\n", (int)GvFLAGS(sv));
+	do_gv_dump (level, file, "    FILEGV", GvFILEGV(sv));
+	do_gv_dump (level, file, "    EGV", GvEGV(sv));
+	break;
+    case SVt_PVIO:
+	dump_indent(level, file, "  IFP = 0x%lx\n", (long)IoIFP(sv));
+	dump_indent(level, file, "  OFP = 0x%lx\n", (long)IoOFP(sv));
+	dump_indent(level, file, "  DIRP = 0x%lx\n", (long)IoDIRP(sv));
+	dump_indent(level, file, "  LINES = %ld\n", (long)IoLINES(sv));
+	dump_indent(level, file, "  PAGE = %ld\n", (long)IoPAGE(sv));
+	dump_indent(level, file, "  PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
+	dump_indent(level, file, "  LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
+	dump_indent(level, file, "  TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
+	do_gv_dump (level, file, "  TOP_GV", IoTOP_GV(sv));
+	dump_indent(level, file, "  FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
+	do_gv_dump (level, file, "  FMT_GV", IoFMT_GV(sv));
+	dump_indent(level, file, "  BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
+	do_gv_dump (level, file, "  BOTTOM_GV", IoBOTTOM_GV(sv));
+	dump_indent(level, file, "  SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
+	dump_indent(level, file, "  TYPE = %c\n", IoTYPE(sv));
+	dump_indent(level, file, "  FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
+	break;
+    }
+}
+
+void
+sv_dump(SV *sv)
+{
+    do_sv_dump(0, Perl_debug_log, sv, 0, 0, 0, 0);
 }