xref: /openbsd-src/gnu/usr.bin/perl/dump.c (revision db3296cf5c1dd9058ceecc3a29fe4aaa0bd26000)
1 /*    dump.c
2  *
3  *    Copyright (c) 1991-2002, Larry Wall
4  *
5  *    You may distribute under the terms of either the GNU General Public
6  *    License or the Artistic License, as specified in the README file.
7  *
8  */
9 
10 /*
11  * "'You have talked long in your sleep, Frodo,' said Gandalf gently, 'and
12  * it has not been hard for me to read your mind and memory.'"
13  */
14 
15 #include "EXTERN.h"
16 #define PERL_IN_DUMP_C
17 #include "perl.h"
18 #include "regcomp.h"
19 
20 void
21 Perl_dump_indent(pTHX_ I32 level, PerlIO *file, const char* pat, ...)
22 {
23     va_list args;
24     va_start(args, pat);
25     dump_vindent(level, file, pat, &args);
26     va_end(args);
27 }
28 
29 void
30 Perl_dump_vindent(pTHX_ I32 level, PerlIO *file, const char* pat, va_list *args)
31 {
32     PerlIO_printf(file, "%*s", (int)(level*PL_dumpindent), "");
33     PerlIO_vprintf(file, pat, *args);
34 }
35 
36 void
37 Perl_dump_all(pTHX)
38 {
39     PerlIO_setlinebuf(Perl_debug_log);
40     if (PL_main_root)
41 	op_dump(PL_main_root);
42     dump_packsubs(PL_defstash);
43 }
44 
45 void
46 Perl_dump_packsubs(pTHX_ HV *stash)
47 {
48     I32	i;
49     HE	*entry;
50 
51     if (!HvARRAY(stash))
52 	return;
53     for (i = 0; i <= (I32) HvMAX(stash); i++) {
54 	for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
55 	    GV *gv = (GV*)HeVAL(entry);
56 	    HV *hv;
57 	    if (SvTYPE(gv) != SVt_PVGV || !GvGP(gv))
58 		continue;
59 	    if (GvCVu(gv))
60 		dump_sub(gv);
61 	    if (GvFORM(gv))
62 		dump_form(gv);
63 	    if (HeKEY(entry)[HeKLEN(entry)-1] == ':'
64 		&& (hv = GvHV(gv)) && hv != PL_defstash)
65 		dump_packsubs(hv);		/* nested package */
66 	}
67     }
68 }
69 
70 void
71 Perl_dump_sub(pTHX_ GV *gv)
72 {
73     SV *sv = sv_newmortal();
74 
75     gv_fullname3(sv, gv, Nullch);
76     Perl_dump_indent(aTHX_ 0, Perl_debug_log, "\nSUB %s = ", SvPVX(sv));
77     if (CvXSUB(GvCV(gv)))
78 	Perl_dump_indent(aTHX_ 0, Perl_debug_log, "(xsub 0x%"UVxf" %d)\n",
79 	    PTR2UV(CvXSUB(GvCV(gv))),
80 	    (int)CvXSUBANY(GvCV(gv)).any_i32);
81     else if (CvROOT(GvCV(gv)))
82 	op_dump(CvROOT(GvCV(gv)));
83     else
84 	Perl_dump_indent(aTHX_ 0, Perl_debug_log, "<undef>\n");
85 }
86 
87 void
88 Perl_dump_form(pTHX_ GV *gv)
89 {
90     SV *sv = sv_newmortal();
91 
92     gv_fullname3(sv, gv, Nullch);
93     Perl_dump_indent(aTHX_ 0, Perl_debug_log, "\nFORMAT %s = ", SvPVX(sv));
94     if (CvROOT(GvFORM(gv)))
95 	op_dump(CvROOT(GvFORM(gv)));
96     else
97 	Perl_dump_indent(aTHX_ 0, Perl_debug_log, "<undef>\n");
98 }
99 
100 void
101 Perl_dump_eval(pTHX)
102 {
103     op_dump(PL_eval_root);
104 }
105 
106 char *
107 Perl_pv_display(pTHX_ SV *dsv, char *pv, STRLEN cur, STRLEN len, STRLEN pvlim)
108 {
109     int truncated = 0;
110     int nul_terminated = len > cur && pv[cur] == '\0';
111 
112     sv_setpvn(dsv, "\"", 1);
113     for (; cur--; pv++) {
114 	if (pvlim && SvCUR(dsv) >= pvlim) {
115             truncated++;
116 	    break;
117         }
118         if (isPRINT(*pv)) {
119             switch (*pv) {
120 	    case '\t': sv_catpvn(dsv, "\\t", 2);  break;
121 	    case '\n': sv_catpvn(dsv, "\\n", 2);  break;
122 	    case '\r': sv_catpvn(dsv, "\\r", 2);  break;
123 	    case '\f': sv_catpvn(dsv, "\\f", 2);  break;
124 	    case '"':  sv_catpvn(dsv, "\\\"", 2); break;
125 	    case '\\': sv_catpvn(dsv, "\\\\", 2); break;
126 	    default:   sv_catpvn(dsv, pv, 1);     break;
127             }
128         }
129 	else {
130 	    if (cur && isDIGIT(*(pv+1)))
131 		Perl_sv_catpvf(aTHX_ dsv, "\\%03o", (U8)*pv);
132 	    else
133 		Perl_sv_catpvf(aTHX_ dsv, "\\%o", (U8)*pv);
134         }
135     }
136     sv_catpvn(dsv, "\"", 1);
137     if (truncated)
138 	sv_catpvn(dsv, "...", 3);
139     if (nul_terminated)
140 	sv_catpvn(dsv, "\\0", 2);
141 
142     return SvPVX(dsv);
143 }
144 
145 char *
146 Perl_sv_peek(pTHX_ SV *sv)
147 {
148     SV *t = sv_newmortal();
149     STRLEN n_a;
150     int unref = 0;
151 
152     sv_setpvn(t, "", 0);
153   retry:
154     if (!sv) {
155 	sv_catpv(t, "VOID");
156 	goto finish;
157     }
158     else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
159 	sv_catpv(t, "WILD");
160 	goto finish;
161     }
162     else if (sv == &PL_sv_undef || sv == &PL_sv_no || sv == &PL_sv_yes) {
163 	if (sv == &PL_sv_undef) {
164 	    sv_catpv(t, "SV_UNDEF");
165 	    if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
166 				 SVs_GMG|SVs_SMG|SVs_RMG)) &&
167 		SvREADONLY(sv))
168 		goto finish;
169 	}
170 	else if (sv == &PL_sv_no) {
171 	    sv_catpv(t, "SV_NO");
172 	    if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
173 				 SVs_GMG|SVs_SMG|SVs_RMG)) &&
174 		!(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
175 				  SVp_POK|SVp_NOK)) &&
176 		SvCUR(sv) == 0 &&
177 		SvNVX(sv) == 0.0)
178 		goto finish;
179 	}
180 	else {
181 	    sv_catpv(t, "SV_YES");
182 	    if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
183 				 SVs_GMG|SVs_SMG|SVs_RMG)) &&
184 		!(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
185 				  SVp_POK|SVp_NOK)) &&
186 		SvCUR(sv) == 1 &&
187 		SvPVX(sv) && *SvPVX(sv) == '1' &&
188 		SvNVX(sv) == 1.0)
189 		goto finish;
190 	}
191 	sv_catpv(t, ":");
192     }
193     else if (SvREFCNT(sv) == 0) {
194 	sv_catpv(t, "(");
195 	unref++;
196     }
197     else if (DEBUG_R_TEST_ && SvREFCNT(sv) > 1) {
198 	Perl_sv_catpvf(aTHX_ t, "<%"UVuf">", (UV)SvREFCNT(sv));
199     }
200 
201 
202     if (SvROK(sv)) {
203 	sv_catpv(t, "\\");
204 	if (SvCUR(t) + unref > 10) {
205 	    SvCUR(t) = unref + 3;
206 	    *SvEND(t) = '\0';
207 	    sv_catpv(t, "...");
208 	    goto finish;
209 	}
210 	sv = (SV*)SvRV(sv);
211 	goto retry;
212     }
213     switch (SvTYPE(sv)) {
214     default:
215 	sv_catpv(t, "FREED");
216 	goto finish;
217 
218     case SVt_NULL:
219 	sv_catpv(t, "UNDEF");
220 	goto finish;
221     case SVt_IV:
222 	sv_catpv(t, "IV");
223 	break;
224     case SVt_NV:
225 	sv_catpv(t, "NV");
226 	break;
227     case SVt_RV:
228 	sv_catpv(t, "RV");
229 	break;
230     case SVt_PV:
231 	sv_catpv(t, "PV");
232 	break;
233     case SVt_PVIV:
234 	sv_catpv(t, "PVIV");
235 	break;
236     case SVt_PVNV:
237 	sv_catpv(t, "PVNV");
238 	break;
239     case SVt_PVMG:
240 	sv_catpv(t, "PVMG");
241 	break;
242     case SVt_PVLV:
243 	sv_catpv(t, "PVLV");
244 	break;
245     case SVt_PVAV:
246 	sv_catpv(t, "AV");
247 	break;
248     case SVt_PVHV:
249 	sv_catpv(t, "HV");
250 	break;
251     case SVt_PVCV:
252 	if (CvGV(sv))
253 	    Perl_sv_catpvf(aTHX_ t, "CV(%s)", GvNAME(CvGV(sv)));
254 	else
255 	    sv_catpv(t, "CV()");
256 	goto finish;
257     case SVt_PVGV:
258 	sv_catpv(t, "GV");
259 	break;
260     case SVt_PVBM:
261 	sv_catpv(t, "BM");
262 	break;
263     case SVt_PVFM:
264 	sv_catpv(t, "FM");
265 	break;
266     case SVt_PVIO:
267 	sv_catpv(t, "IO");
268 	break;
269     }
270 
271     if (SvPOKp(sv)) {
272 	if (!SvPVX(sv))
273 	    sv_catpv(t, "(null)");
274 	else {
275 	    SV *tmp = newSVpvn("", 0);
276 	    sv_catpv(t, "(");
277 	    if (SvOOK(sv))
278 		Perl_sv_catpvf(aTHX_ t, "[%s]", pv_display(tmp, SvPVX(sv)-SvIVX(sv), SvIVX(sv), 0, 127));
279 	    Perl_sv_catpvf(aTHX_ t, "%s)", pv_display(tmp, SvPVX(sv), SvCUR(sv), SvLEN(sv), 127));
280 	    if (SvUTF8(sv))
281 		Perl_sv_catpvf(aTHX_ t, " [UTF8 \"%s\"]",
282 			       sv_uni_display(tmp, sv, 8 * sv_len_utf8(sv),
283 					      UNI_DISPLAY_QQ));
284 	    SvREFCNT_dec(tmp);
285 	}
286     }
287     else if (SvNOKp(sv)) {
288 	STORE_NUMERIC_LOCAL_SET_STANDARD();
289 	Perl_sv_catpvf(aTHX_ t, "(%"NVgf")",SvNVX(sv));
290 	RESTORE_NUMERIC_LOCAL();
291     }
292     else if (SvIOKp(sv)) {
293 	if (SvIsUV(sv))
294 	    Perl_sv_catpvf(aTHX_ t, "(%"UVuf")", (UV)SvUVX(sv));
295 	else
296             Perl_sv_catpvf(aTHX_ t, "(%"IVdf")", (IV)SvIVX(sv));
297     }
298     else
299 	sv_catpv(t, "()");
300 
301   finish:
302     if (unref) {
303 	while (unref--)
304 	    sv_catpv(t, ")");
305     }
306     return SvPV(t, n_a);
307 }
308 
309 void
310 Perl_do_pmop_dump(pTHX_ I32 level, PerlIO *file, PMOP *pm)
311 {
312     char ch;
313 
314     if (!pm) {
315 	Perl_dump_indent(aTHX_ level, file, "{}\n");
316 	return;
317     }
318     Perl_dump_indent(aTHX_ level, file, "{\n");
319     level++;
320     if (pm->op_pmflags & PMf_ONCE)
321 	ch = '?';
322     else
323 	ch = '/';
324     if (PM_GETRE(pm))
325 	Perl_dump_indent(aTHX_ level, file, "PMf_PRE %c%s%c%s\n",
326 	     ch, PM_GETRE(pm)->precomp, ch,
327 	     (pm->op_private & OPpRUNTIME) ? " (RUNTIME)" : "");
328     else
329 	Perl_dump_indent(aTHX_ level, file, "PMf_PRE (RUNTIME)\n");
330     if (pm->op_type != OP_PUSHRE && pm->op_pmreplroot) {
331 	Perl_dump_indent(aTHX_ level, file, "PMf_REPL = ");
332 	op_dump(pm->op_pmreplroot);
333     }
334     if (pm->op_pmflags || (PM_GETRE(pm) && PM_GETRE(pm)->check_substr)) {
335 	SV *tmpsv = newSVpvn("", 0);
336 	if (pm->op_pmdynflags & PMdf_USED)
337 	    sv_catpv(tmpsv, ",USED");
338 	if (pm->op_pmdynflags & PMdf_TAINTED)
339 	    sv_catpv(tmpsv, ",TAINTED");
340 	if (pm->op_pmflags & PMf_ONCE)
341 	    sv_catpv(tmpsv, ",ONCE");
342 	if (PM_GETRE(pm) && PM_GETRE(pm)->check_substr
343 	    && !(PM_GETRE(pm)->reganch & ROPT_NOSCAN))
344 	    sv_catpv(tmpsv, ",SCANFIRST");
345 	if (PM_GETRE(pm) && PM_GETRE(pm)->check_substr
346 	    && PM_GETRE(pm)->reganch & ROPT_CHECK_ALL)
347 	    sv_catpv(tmpsv, ",ALL");
348 	if (pm->op_pmflags & PMf_SKIPWHITE)
349 	    sv_catpv(tmpsv, ",SKIPWHITE");
350 	if (pm->op_pmflags & PMf_CONST)
351 	    sv_catpv(tmpsv, ",CONST");
352 	if (pm->op_pmflags & PMf_KEEP)
353 	    sv_catpv(tmpsv, ",KEEP");
354 	if (pm->op_pmflags & PMf_GLOBAL)
355 	    sv_catpv(tmpsv, ",GLOBAL");
356 	if (pm->op_pmflags & PMf_CONTINUE)
357 	    sv_catpv(tmpsv, ",CONTINUE");
358 	if (pm->op_pmflags & PMf_RETAINT)
359 	    sv_catpv(tmpsv, ",RETAINT");
360 	if (pm->op_pmflags & PMf_EVAL)
361 	    sv_catpv(tmpsv, ",EVAL");
362 	Perl_dump_indent(aTHX_ level, file, "PMFLAGS = (%s)\n", SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");
363 	SvREFCNT_dec(tmpsv);
364     }
365 
366     Perl_dump_indent(aTHX_ level-1, file, "}\n");
367 }
368 
369 void
370 Perl_pmop_dump(pTHX_ PMOP *pm)
371 {
372     do_pmop_dump(0, Perl_debug_log, pm);
373 }
374 
375 void
376 Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, OP *o)
377 {
378     Perl_dump_indent(aTHX_ level, file, "{\n");
379     level++;
380     if (o->op_seq)
381 	PerlIO_printf(file, "%-4d", o->op_seq);
382     else
383 	PerlIO_printf(file, "    ");
384     PerlIO_printf(file,
385 		  "%*sTYPE = %s  ===> ",
386 		  (int)(PL_dumpindent*level-4), "", OP_NAME(o));
387     if (o->op_next) {
388 	if (o->op_seq)
389 	    PerlIO_printf(file, "%d\n", o->op_next->op_seq);
390 	else
391 	    PerlIO_printf(file, "(%d)\n", o->op_next->op_seq);
392     }
393     else
394 	PerlIO_printf(file, "DONE\n");
395     if (o->op_targ) {
396 	if (o->op_type == OP_NULL)
397 	{
398 	    Perl_dump_indent(aTHX_ level, file, "  (was %s)\n", PL_op_name[o->op_targ]);
399 	    if (o->op_targ == OP_NEXTSTATE)
400 	    {
401 		if (CopLINE(cCOPo))
402 		    Perl_dump_indent(aTHX_ level, file, "LINE = %d\n",CopLINE(cCOPo));
403 		if (CopSTASHPV(cCOPo))
404 		    Perl_dump_indent(aTHX_ level, file, "PACKAGE = \"%s\"\n",
405 				     CopSTASHPV(cCOPo));
406 		if (cCOPo->cop_label)
407 		    Perl_dump_indent(aTHX_ level, file, "LABEL = \"%s\"\n",
408 				     cCOPo->cop_label);
409 	    }
410 	}
411 	else
412 	    Perl_dump_indent(aTHX_ level, file, "TARG = %ld\n", (long)o->op_targ);
413     }
414 #ifdef DUMPADDR
415     Perl_dump_indent(aTHX_ level, file, "ADDR = 0x%"UVxf" => 0x%"UVxf"\n", (UV)o, (UV)o->op_next);
416 #endif
417     if (o->op_flags) {
418 	SV *tmpsv = newSVpvn("", 0);
419 	switch (o->op_flags & OPf_WANT) {
420 	case OPf_WANT_VOID:
421 	    sv_catpv(tmpsv, ",VOID");
422 	    break;
423 	case OPf_WANT_SCALAR:
424 	    sv_catpv(tmpsv, ",SCALAR");
425 	    break;
426 	case OPf_WANT_LIST:
427 	    sv_catpv(tmpsv, ",LIST");
428 	    break;
429 	default:
430 	    sv_catpv(tmpsv, ",UNKNOWN");
431 	    break;
432 	}
433 	if (o->op_flags & OPf_KIDS)
434 	    sv_catpv(tmpsv, ",KIDS");
435 	if (o->op_flags & OPf_PARENS)
436 	    sv_catpv(tmpsv, ",PARENS");
437 	if (o->op_flags & OPf_STACKED)
438 	    sv_catpv(tmpsv, ",STACKED");
439 	if (o->op_flags & OPf_REF)
440 	    sv_catpv(tmpsv, ",REF");
441 	if (o->op_flags & OPf_MOD)
442 	    sv_catpv(tmpsv, ",MOD");
443 	if (o->op_flags & OPf_SPECIAL)
444 	    sv_catpv(tmpsv, ",SPECIAL");
445 	Perl_dump_indent(aTHX_ level, file, "FLAGS = (%s)\n", SvCUR(tmpsv) ? SvPVX(tmpsv) + 1 : "");
446 	SvREFCNT_dec(tmpsv);
447     }
448     if (o->op_private) {
449 	SV *tmpsv = newSVpvn("", 0);
450 	if (PL_opargs[o->op_type] & OA_TARGLEX) {
451 	    if (o->op_private & OPpTARGET_MY)
452 		sv_catpv(tmpsv, ",TARGET_MY");
453 	}
454 	else if (o->op_type == OP_LEAVESUB ||
455 		 o->op_type == OP_LEAVE ||
456 		 o->op_type == OP_LEAVESUBLV ||
457 		 o->op_type == OP_LEAVEWRITE) {
458 	    if (o->op_private & OPpREFCOUNTED)
459 		sv_catpv(tmpsv, ",REFCOUNTED");
460 	}
461         else if (o->op_type == OP_AASSIGN) {
462 	    if (o->op_private & OPpASSIGN_COMMON)
463 		sv_catpv(tmpsv, ",COMMON");
464 	    if (o->op_private & OPpASSIGN_HASH)
465 		sv_catpv(tmpsv, ",HASH");
466 	}
467 	else if (o->op_type == OP_SASSIGN) {
468 	    if (o->op_private & OPpASSIGN_BACKWARDS)
469 		sv_catpv(tmpsv, ",BACKWARDS");
470 	}
471 	else if (o->op_type == OP_TRANS) {
472 	    if (o->op_private & OPpTRANS_SQUASH)
473 		sv_catpv(tmpsv, ",SQUASH");
474 	    if (o->op_private & OPpTRANS_DELETE)
475 		sv_catpv(tmpsv, ",DELETE");
476 	    if (o->op_private & OPpTRANS_COMPLEMENT)
477 		sv_catpv(tmpsv, ",COMPLEMENT");
478 	    if (o->op_private & OPpTRANS_IDENTICAL)
479 		sv_catpv(tmpsv, ",IDENTICAL");
480 	    if (o->op_private & OPpTRANS_GROWS)
481 		sv_catpv(tmpsv, ",GROWS");
482 	}
483 	else if (o->op_type == OP_REPEAT) {
484 	    if (o->op_private & OPpREPEAT_DOLIST)
485 		sv_catpv(tmpsv, ",DOLIST");
486 	}
487 	else if (o->op_type == OP_ENTERSUB ||
488 		 o->op_type == OP_RV2SV ||
489 		 o->op_type == OP_GVSV ||
490 		 o->op_type == OP_RV2AV ||
491 		 o->op_type == OP_RV2HV ||
492 		 o->op_type == OP_RV2GV ||
493 		 o->op_type == OP_AELEM ||
494 		 o->op_type == OP_HELEM )
495 	{
496 	    if (o->op_type == OP_ENTERSUB) {
497 		if (o->op_private & OPpENTERSUB_AMPER)
498 		    sv_catpv(tmpsv, ",AMPER");
499 		if (o->op_private & OPpENTERSUB_DB)
500 		    sv_catpv(tmpsv, ",DB");
501 		if (o->op_private & OPpENTERSUB_HASTARG)
502 		    sv_catpv(tmpsv, ",HASTARG");
503 		if (o->op_private & OPpENTERSUB_NOPAREN)
504 		    sv_catpv(tmpsv, ",NOPAREN");
505 		if (o->op_private & OPpENTERSUB_INARGS)
506 		    sv_catpv(tmpsv, ",INARGS");
507 		if (o->op_private & OPpENTERSUB_NOMOD)
508 		    sv_catpv(tmpsv, ",NOMOD");
509 	    }
510 	    else {
511 		switch (o->op_private & OPpDEREF) {
512 	    case OPpDEREF_SV:
513 		sv_catpv(tmpsv, ",SV");
514 		break;
515 	    case OPpDEREF_AV:
516 		sv_catpv(tmpsv, ",AV");
517 		break;
518 	    case OPpDEREF_HV:
519 		sv_catpv(tmpsv, ",HV");
520 		break;
521 	    }
522 		if (o->op_private & OPpMAYBE_LVSUB)
523 		    sv_catpv(tmpsv, ",MAYBE_LVSUB");
524 	    }
525 	    if (o->op_type == OP_AELEM || o->op_type == OP_HELEM) {
526 		if (o->op_private & OPpLVAL_DEFER)
527 		    sv_catpv(tmpsv, ",LVAL_DEFER");
528 	    }
529 	    else {
530 		if (o->op_private & HINT_STRICT_REFS)
531 		    sv_catpv(tmpsv, ",STRICT_REFS");
532 		if (o->op_private & OPpOUR_INTRO)
533 		    sv_catpv(tmpsv, ",OUR_INTRO");
534 	    }
535 	}
536 	else if (o->op_type == OP_CONST) {
537 	    if (o->op_private & OPpCONST_BARE)
538 		sv_catpv(tmpsv, ",BARE");
539 	    if (o->op_private & OPpCONST_STRICT)
540 		sv_catpv(tmpsv, ",STRICT");
541 	    if (o->op_private & OPpCONST_ARYBASE)
542 		sv_catpv(tmpsv, ",ARYBASE");
543 	    if (o->op_private & OPpCONST_WARNING)
544 		sv_catpv(tmpsv, ",WARNING");
545 	    if (o->op_private & OPpCONST_ENTERED)
546 		sv_catpv(tmpsv, ",ENTERED");
547 	}
548 	else if (o->op_type == OP_FLIP) {
549 	    if (o->op_private & OPpFLIP_LINENUM)
550 		sv_catpv(tmpsv, ",LINENUM");
551 	}
552 	else if (o->op_type == OP_FLOP) {
553 	    if (o->op_private & OPpFLIP_LINENUM)
554 		sv_catpv(tmpsv, ",LINENUM");
555 	}
556 	else if (o->op_type == OP_RV2CV) {
557 	    if (o->op_private & OPpLVAL_INTRO)
558 		sv_catpv(tmpsv, ",INTRO");
559 	}
560 	else if (o->op_type == OP_GV) {
561 	    if (o->op_private & OPpEARLY_CV)
562 		sv_catpv(tmpsv, ",EARLY_CV");
563 	}
564 	else if (o->op_type == OP_LIST) {
565 	    if (o->op_private & OPpLIST_GUESSED)
566 		sv_catpv(tmpsv, ",GUESSED");
567 	}
568 	else if (o->op_type == OP_DELETE) {
569 	    if (o->op_private & OPpSLICE)
570 		sv_catpv(tmpsv, ",SLICE");
571 	}
572 	else if (o->op_type == OP_EXISTS) {
573 	    if (o->op_private & OPpEXISTS_SUB)
574 		sv_catpv(tmpsv, ",EXISTS_SUB");
575 	}
576 	else if (o->op_type == OP_SORT) {
577 	    if (o->op_private & OPpSORT_NUMERIC)
578 		sv_catpv(tmpsv, ",NUMERIC");
579 	    if (o->op_private & OPpSORT_INTEGER)
580 		sv_catpv(tmpsv, ",INTEGER");
581 	    if (o->op_private & OPpSORT_REVERSE)
582 		sv_catpv(tmpsv, ",REVERSE");
583 	}
584 	else if (o->op_type == OP_THREADSV) {
585 	    if (o->op_private & OPpDONE_SVREF)
586 		sv_catpv(tmpsv, ",SVREF");
587 	}
588 	else if (o->op_type == OP_OPEN || o->op_type == OP_BACKTICK) {
589 	    if (o->op_private & OPpOPEN_IN_RAW)
590 		sv_catpv(tmpsv, ",IN_RAW");
591 	    if (o->op_private & OPpOPEN_IN_CRLF)
592 		sv_catpv(tmpsv, ",IN_CRLF");
593 	    if (o->op_private & OPpOPEN_OUT_RAW)
594 		sv_catpv(tmpsv, ",OUT_RAW");
595 	    if (o->op_private & OPpOPEN_OUT_CRLF)
596 		sv_catpv(tmpsv, ",OUT_CRLF");
597 	}
598 	else if (o->op_type == OP_EXIT) {
599 	    if (o->op_private & OPpEXIT_VMSISH)
600 		sv_catpv(tmpsv, ",EXIT_VMSISH");
601 	    if (o->op_private & OPpHUSH_VMSISH)
602 		sv_catpv(tmpsv, ",HUSH_VMSISH");
603 	}
604 	else if (o->op_type == OP_DIE) {
605 	    if (o->op_private & OPpHUSH_VMSISH)
606 		sv_catpv(tmpsv, ",HUSH_VMSISH");
607 	}
608 	if (o->op_flags & OPf_MOD && o->op_private & OPpLVAL_INTRO)
609 	    sv_catpv(tmpsv, ",INTRO");
610 	if (SvCUR(tmpsv))
611 	    Perl_dump_indent(aTHX_ level, file, "PRIVATE = (%s)\n", SvPVX(tmpsv) + 1);
612 	SvREFCNT_dec(tmpsv);
613     }
614 
615     switch (o->op_type) {
616     case OP_AELEMFAST:
617     case OP_GVSV:
618     case OP_GV:
619 #ifdef USE_ITHREADS
620 	Perl_dump_indent(aTHX_ level, file, "PADIX = %" IVdf "\n", (IV)cPADOPo->op_padix);
621 #else
622 	if (cSVOPo->op_sv) {
623 	    SV *tmpsv = NEWSV(0,0);
624 	    STRLEN n_a;
625 	    ENTER;
626 	    SAVEFREESV(tmpsv);
627 	    gv_fullname3(tmpsv, (GV*)cSVOPo->op_sv, Nullch);
628 	    Perl_dump_indent(aTHX_ level, file, "GV = %s\n", SvPV(tmpsv, n_a));
629 	    LEAVE;
630 	}
631 	else
632 	    Perl_dump_indent(aTHX_ level, file, "GV = NULL\n");
633 #endif
634 	break;
635     case OP_CONST:
636     case OP_METHOD_NAMED:
637 	Perl_dump_indent(aTHX_ level, file, "SV = %s\n", SvPEEK(cSVOPo->op_sv));
638 	break;
639     case OP_SETSTATE:
640     case OP_NEXTSTATE:
641     case OP_DBSTATE:
642 	if (CopLINE(cCOPo))
643 	    Perl_dump_indent(aTHX_ level, file, "LINE = %d\n",CopLINE(cCOPo));
644 	if (CopSTASHPV(cCOPo))
645 	    Perl_dump_indent(aTHX_ level, file, "PACKAGE = \"%s\"\n",
646 			     CopSTASHPV(cCOPo));
647 	if (cCOPo->cop_label)
648 	    Perl_dump_indent(aTHX_ level, file, "LABEL = \"%s\"\n",
649 			     cCOPo->cop_label);
650 	break;
651     case OP_ENTERLOOP:
652 	Perl_dump_indent(aTHX_ level, file, "REDO ===> ");
653 	if (cLOOPo->op_redoop)
654 	    PerlIO_printf(file, "%d\n", cLOOPo->op_redoop->op_seq);
655 	else
656 	    PerlIO_printf(file, "DONE\n");
657 	Perl_dump_indent(aTHX_ level, file, "NEXT ===> ");
658 	if (cLOOPo->op_nextop)
659 	    PerlIO_printf(file, "%d\n", cLOOPo->op_nextop->op_seq);
660 	else
661 	    PerlIO_printf(file, "DONE\n");
662 	Perl_dump_indent(aTHX_ level, file, "LAST ===> ");
663 	if (cLOOPo->op_lastop)
664 	    PerlIO_printf(file, "%d\n", cLOOPo->op_lastop->op_seq);
665 	else
666 	    PerlIO_printf(file, "DONE\n");
667 	break;
668     case OP_COND_EXPR:
669     case OP_RANGE:
670     case OP_MAPWHILE:
671     case OP_GREPWHILE:
672     case OP_OR:
673     case OP_AND:
674 	Perl_dump_indent(aTHX_ level, file, "OTHER ===> ");
675 	if (cLOGOPo->op_other)
676 	    PerlIO_printf(file, "%d\n", cLOGOPo->op_other->op_seq);
677 	else
678 	    PerlIO_printf(file, "DONE\n");
679 	break;
680     case OP_PUSHRE:
681     case OP_MATCH:
682     case OP_QR:
683     case OP_SUBST:
684 	do_pmop_dump(level, file, cPMOPo);
685 	break;
686     case OP_LEAVE:
687     case OP_LEAVEEVAL:
688     case OP_LEAVESUB:
689     case OP_LEAVESUBLV:
690     case OP_LEAVEWRITE:
691     case OP_SCOPE:
692 	if (o->op_private & OPpREFCOUNTED)
693 	    Perl_dump_indent(aTHX_ level, file, "REFCNT = %"UVuf"\n", (UV)o->op_targ);
694 	break;
695     default:
696 	break;
697     }
698     if (o->op_flags & OPf_KIDS) {
699 	OP *kid;
700 	for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling)
701 	    do_op_dump(level, file, kid);
702     }
703     Perl_dump_indent(aTHX_ level-1, file, "}\n");
704 }
705 
706 void
707 Perl_op_dump(pTHX_ OP *o)
708 {
709     do_op_dump(0, Perl_debug_log, o);
710 }
711 
712 void
713 Perl_gv_dump(pTHX_ GV *gv)
714 {
715     SV *sv;
716 
717     if (!gv) {
718 	PerlIO_printf(Perl_debug_log, "{}\n");
719 	return;
720     }
721     sv = sv_newmortal();
722     PerlIO_printf(Perl_debug_log, "{\n");
723     gv_fullname3(sv, gv, Nullch);
724     Perl_dump_indent(aTHX_ 1, Perl_debug_log, "GV_NAME = %s", SvPVX(sv));
725     if (gv != GvEGV(gv)) {
726 	gv_efullname3(sv, GvEGV(gv), Nullch);
727 	Perl_dump_indent(aTHX_ 1, Perl_debug_log, "-> %s", SvPVX(sv));
728     }
729     PerlIO_putc(Perl_debug_log, '\n');
730     Perl_dump_indent(aTHX_ 0, Perl_debug_log, "}\n");
731 }
732 
733 
734 /* map magic types to the symbolic names
735  * (with the PERL_MAGIC_ prefixed stripped)
736  */
737 
738 static struct { char type; char *name; } magic_names[] = {
739 	{ PERL_MAGIC_sv,             "sv(\\0)" },
740 	{ PERL_MAGIC_arylen,         "arylen(#)" },
741 	{ PERL_MAGIC_glob,           "glob(*)" },
742 	{ PERL_MAGIC_pos,            "pos(.)" },
743 	{ PERL_MAGIC_backref,        "backref(<)" },
744 	{ PERL_MAGIC_overload,       "overload(A)" },
745 	{ PERL_MAGIC_bm,             "bm(B)" },
746 	{ PERL_MAGIC_regdata,        "regdata(D)" },
747 	{ PERL_MAGIC_env,            "env(E)" },
748 	{ PERL_MAGIC_isa,            "isa(I)" },
749 	{ PERL_MAGIC_dbfile,         "dbfile(L)" },
750 	{ PERL_MAGIC_shared,         "shared(N)" },
751 	{ PERL_MAGIC_tied,           "tied(P)" },
752 	{ PERL_MAGIC_sig,            "sig(S)" },
753 	{ PERL_MAGIC_uvar,           "uvar(U)" },
754 	{ PERL_MAGIC_overload_elem,  "overload_elem(a)" },
755 	{ PERL_MAGIC_overload_table, "overload_table(c)" },
756 	{ PERL_MAGIC_regdatum,       "regdatum(d)" },
757 	{ PERL_MAGIC_envelem,        "envelem(e)" },
758 	{ PERL_MAGIC_fm,             "fm(f)" },
759 	{ PERL_MAGIC_regex_global,   "regex_global(g)" },
760 	{ PERL_MAGIC_isaelem,        "isaelem(i)" },
761 	{ PERL_MAGIC_nkeys,          "nkeys(k)" },
762 	{ PERL_MAGIC_dbline,         "dbline(l)" },
763 	{ PERL_MAGIC_mutex,          "mutex(m)" },
764 	{ PERL_MAGIC_shared_scalar,  "shared_scalar(n)" },
765 	{ PERL_MAGIC_collxfrm,       "collxfrm(o)" },
766 	{ PERL_MAGIC_tiedelem,       "tiedelem(p)" },
767 	{ PERL_MAGIC_tiedscalar,     "tiedscalar(q)" },
768 	{ PERL_MAGIC_qr,             "qr(r)" },
769 	{ PERL_MAGIC_sigelem,        "sigelem(s)" },
770 	{ PERL_MAGIC_taint,          "taint(t)" },
771 	{ PERL_MAGIC_uvar_elem,      "uvar_elem(v)" },
772 	{ PERL_MAGIC_vec,            "vec(v)" },
773 	{ PERL_MAGIC_substr,         "substr(x)" },
774 	{ PERL_MAGIC_defelem,        "defelem(y)" },
775 	{ PERL_MAGIC_ext,            "ext(~)" },
776 	/* this null string terminates the list */
777 	{ 0,                         0 },
778 };
779 
780 void
781 Perl_do_magic_dump(pTHX_ I32 level, PerlIO *file, MAGIC *mg, I32 nest, I32 maxnest, bool dumpops, STRLEN pvlim)
782 {
783     for (; mg; mg = mg->mg_moremagic) {
784  	Perl_dump_indent(aTHX_ level, file,
785 			 "  MAGIC = 0x%"UVxf"\n", PTR2UV(mg));
786  	if (mg->mg_virtual) {
787             MGVTBL *v = mg->mg_virtual;
788  	    char *s = 0;
789  	    if      (v == &PL_vtbl_sv)         s = "sv";
790             else if (v == &PL_vtbl_env)        s = "env";
791             else if (v == &PL_vtbl_envelem)    s = "envelem";
792             else if (v == &PL_vtbl_sig)        s = "sig";
793             else if (v == &PL_vtbl_sigelem)    s = "sigelem";
794             else if (v == &PL_vtbl_pack)       s = "pack";
795             else if (v == &PL_vtbl_packelem)   s = "packelem";
796             else if (v == &PL_vtbl_dbline)     s = "dbline";
797             else if (v == &PL_vtbl_isa)        s = "isa";
798             else if (v == &PL_vtbl_arylen)     s = "arylen";
799             else if (v == &PL_vtbl_glob)       s = "glob";
800             else if (v == &PL_vtbl_mglob)      s = "mglob";
801             else if (v == &PL_vtbl_nkeys)      s = "nkeys";
802             else if (v == &PL_vtbl_taint)      s = "taint";
803             else if (v == &PL_vtbl_substr)     s = "substr";
804             else if (v == &PL_vtbl_vec)        s = "vec";
805             else if (v == &PL_vtbl_pos)        s = "pos";
806             else if (v == &PL_vtbl_bm)         s = "bm";
807             else if (v == &PL_vtbl_fm)         s = "fm";
808             else if (v == &PL_vtbl_uvar)       s = "uvar";
809             else if (v == &PL_vtbl_defelem)    s = "defelem";
810 #ifdef USE_LOCALE_COLLATE
811 	    else if (v == &PL_vtbl_collxfrm)   s = "collxfrm";
812 #endif
813 	    else if (v == &PL_vtbl_amagic)     s = "amagic";
814 	    else if (v == &PL_vtbl_amagicelem) s = "amagicelem";
815 	    else if (v == &PL_vtbl_backref)    s = "backref";
816 	    if (s)
817 	        Perl_dump_indent(aTHX_ level, file, "    MG_VIRTUAL = &PL_vtbl_%s\n", s);
818 	    else
819 	        Perl_dump_indent(aTHX_ level, file, "    MG_VIRTUAL = 0x%"UVxf"\n", PTR2UV(v));
820         }
821 	else
822 	    Perl_dump_indent(aTHX_ level, file, "    MG_VIRTUAL = 0\n");
823 
824 	if (mg->mg_private)
825 	    Perl_dump_indent(aTHX_ level, file, "    MG_PRIVATE = %d\n", mg->mg_private);
826 
827 	{
828 	    int n;
829 	    char *name = 0;
830 	    for (n=0; magic_names[n].name; n++) {
831 		if (mg->mg_type == magic_names[n].type) {
832 		    name = magic_names[n].name;
833 		    break;
834 		}
835 	    }
836 	    if (name)
837 		Perl_dump_indent(aTHX_ level, file,
838 				"    MG_TYPE = PERL_MAGIC_%s\n", name);
839 	    else
840 		Perl_dump_indent(aTHX_ level, file,
841 				"    MG_TYPE = UNKNOWN(\\%o)\n", mg->mg_type);
842 	}
843 
844         if (mg->mg_flags) {
845             Perl_dump_indent(aTHX_ level, file, "    MG_FLAGS = 0x%02X\n", mg->mg_flags);
846 	    if (mg->mg_flags & MGf_TAINTEDDIR)
847 	        Perl_dump_indent(aTHX_ level, file, "      TAINTEDDIR\n");
848 	    if (mg->mg_flags & MGf_REFCOUNTED)
849 	        Perl_dump_indent(aTHX_ level, file, "      REFCOUNTED\n");
850             if (mg->mg_flags & MGf_GSKIP)
851 	        Perl_dump_indent(aTHX_ level, file, "      GSKIP\n");
852 	    if (mg->mg_flags & MGf_MINMATCH)
853 	        Perl_dump_indent(aTHX_ level, file, "      MINMATCH\n");
854         }
855 	if (mg->mg_obj) {
856 	    Perl_dump_indent(aTHX_ level, file, "    MG_OBJ = 0x%"UVxf"\n", PTR2UV(mg->mg_obj));
857 	    if (mg->mg_flags & MGf_REFCOUNTED)
858 		do_sv_dump(level+2, file, mg->mg_obj, nest+1, maxnest, dumpops, pvlim); /* MG is already +1 */
859 	}
860         if (mg->mg_len)
861 	    Perl_dump_indent(aTHX_ level, file, "    MG_LEN = %ld\n", (long)mg->mg_len);
862         if (mg->mg_ptr) {
863 	    Perl_dump_indent(aTHX_ level, file, "    MG_PTR = 0x%"UVxf, PTR2UV(mg->mg_ptr));
864 	    if (mg->mg_len >= 0) {
865 		SV *sv = newSVpvn("", 0);
866                 PerlIO_printf(file, " %s", pv_display(sv, mg->mg_ptr, mg->mg_len, 0, pvlim));
867 		SvREFCNT_dec(sv);
868             }
869 	    else if (mg->mg_len == HEf_SVKEY) {
870 		PerlIO_puts(file, " => HEf_SVKEY\n");
871 		do_sv_dump(level+2, file, (SV*)((mg)->mg_ptr), nest+1, maxnest, dumpops, pvlim); /* MG is already +1 */
872 		continue;
873 	    }
874 	    else
875 		PerlIO_puts(file, " ???? - please notify IZ");
876             PerlIO_putc(file, '\n');
877         }
878     }
879 }
880 
881 void
882 Perl_magic_dump(pTHX_ MAGIC *mg)
883 {
884     do_magic_dump(0, Perl_debug_log, mg, 0, 0, 0, 0);
885 }
886 
887 void
888 Perl_do_hv_dump(pTHX_ I32 level, PerlIO *file, char *name, HV *sv)
889 {
890     Perl_dump_indent(aTHX_ level, file, "%s = 0x%"UVxf, name, PTR2UV(sv));
891     if (sv && HvNAME(sv))
892 	PerlIO_printf(file, "\t\"%s\"\n", HvNAME(sv));
893     else
894 	PerlIO_putc(file, '\n');
895 }
896 
897 void
898 Perl_do_gv_dump(pTHX_ I32 level, PerlIO *file, char *name, GV *sv)
899 {
900     Perl_dump_indent(aTHX_ level, file, "%s = 0x%"UVxf, name, PTR2UV(sv));
901     if (sv && GvNAME(sv))
902 	PerlIO_printf(file, "\t\"%s\"\n", GvNAME(sv));
903     else
904 	PerlIO_putc(file, '\n');
905 }
906 
907 void
908 Perl_do_gvgv_dump(pTHX_ I32 level, PerlIO *file, char *name, GV *sv)
909 {
910     Perl_dump_indent(aTHX_ level, file, "%s = 0x%"UVxf, name, PTR2UV(sv));
911     if (sv && GvNAME(sv)) {
912 	PerlIO_printf(file, "\t\"");
913 	if (GvSTASH(sv))
914 	    PerlIO_printf(file, "%s\" :: \"", HvNAME(GvSTASH(sv)));
915 	PerlIO_printf(file, "%s\"\n", GvNAME(sv));
916     }
917     else
918 	PerlIO_putc(file, '\n');
919 }
920 
921 void
922 Perl_do_sv_dump(pTHX_ I32 level, PerlIO *file, SV *sv, I32 nest, I32 maxnest, bool dumpops, STRLEN pvlim)
923 {
924     SV *d;
925     char *s;
926     U32 flags;
927     U32 type;
928     STRLEN n_a;
929 
930     if (!sv) {
931 	Perl_dump_indent(aTHX_ level, file, "SV = 0\n");
932 	return;
933     }
934 
935     flags = SvFLAGS(sv);
936     type = SvTYPE(sv);
937 
938     d = Perl_newSVpvf(aTHX_
939 		   "(0x%"UVxf") at 0x%"UVxf"\n%*s  REFCNT = %"IVdf"\n%*s  FLAGS = (",
940 		   PTR2UV(SvANY(sv)), PTR2UV(sv),
941 		   (int)(PL_dumpindent*level), "", (IV)SvREFCNT(sv),
942 		   (int)(PL_dumpindent*level), "");
943 
944     if (flags & SVs_PADBUSY)	sv_catpv(d, "PADBUSY,");
945     if (flags & SVs_PADTMP)	sv_catpv(d, "PADTMP,");
946     if (flags & SVs_PADMY)	sv_catpv(d, "PADMY,");
947     if (flags & SVs_TEMP)	sv_catpv(d, "TEMP,");
948     if (flags & SVs_OBJECT)	sv_catpv(d, "OBJECT,");
949     if (flags & SVs_GMG)	sv_catpv(d, "GMG,");
950     if (flags & SVs_SMG)	sv_catpv(d, "SMG,");
951     if (flags & SVs_RMG)	sv_catpv(d, "RMG,");
952 
953     if (flags & SVf_IOK)	sv_catpv(d, "IOK,");
954     if (flags & SVf_NOK)	sv_catpv(d, "NOK,");
955     if (flags & SVf_POK)	sv_catpv(d, "POK,");
956     if (flags & SVf_ROK)  {
957     				sv_catpv(d, "ROK,");
958 	if (SvWEAKREF(sv))	sv_catpv(d, "WEAKREF,");
959     }
960     if (flags & SVf_OOK)	sv_catpv(d, "OOK,");
961     if (flags & SVf_FAKE)	sv_catpv(d, "FAKE,");
962     if (flags & SVf_READONLY)	sv_catpv(d, "READONLY,");
963 
964     if (flags & SVf_AMAGIC)	sv_catpv(d, "OVERLOAD,");
965     if (flags & SVp_IOK)	sv_catpv(d, "pIOK,");
966     if (flags & SVp_NOK)	sv_catpv(d, "pNOK,");
967     if (flags & SVp_POK)	sv_catpv(d, "pPOK,");
968     if (flags & SVp_SCREAM)	sv_catpv(d, "SCREAM,");
969 
970     switch (type) {
971     case SVt_PVCV:
972     case SVt_PVFM:
973 	if (CvANON(sv))		sv_catpv(d, "ANON,");
974 	if (CvUNIQUE(sv))	sv_catpv(d, "UNIQUE,");
975 	if (CvCLONE(sv))	sv_catpv(d, "CLONE,");
976 	if (CvCLONED(sv))	sv_catpv(d, "CLONED,");
977 	if (CvCONST(sv))	sv_catpv(d, "CONST,");
978 	if (CvNODEBUG(sv))	sv_catpv(d, "NODEBUG,");
979 	if (SvCOMPILED(sv))	sv_catpv(d, "COMPILED,");
980 	if (CvLVALUE(sv))	sv_catpv(d, "LVALUE,");
981 	if (CvMETHOD(sv))	sv_catpv(d, "METHOD,");
982 	if (CvLOCKED(sv))	sv_catpv(d, "LOCKED,");
983 	break;
984     case SVt_PVHV:
985 	if (HvSHAREKEYS(sv))	sv_catpv(d, "SHAREKEYS,");
986 	if (HvLAZYDEL(sv))	sv_catpv(d, "LAZYDEL,");
987 	if (HvHASKFLAGS(sv))	sv_catpv(d, "HASKFLAGS,");
988 	break;
989     case SVt_PVGV:
990 	if (GvINTRO(sv))	sv_catpv(d, "INTRO,");
991 	if (GvMULTI(sv))	sv_catpv(d, "MULTI,");
992 	if (GvUNIQUE(sv))       sv_catpv(d, "UNIQUE,");
993 	if (GvASSUMECV(sv))	sv_catpv(d, "ASSUMECV,");
994 	if (GvIN_PAD(sv))       sv_catpv(d, "IN_PAD,");
995 	if (flags & SVpad_OUR)	sv_catpv(d, "OUR,");
996 	if (GvIMPORTED(sv)) {
997 	    sv_catpv(d, "IMPORT");
998 	    if (GvIMPORTED(sv) == GVf_IMPORTED)
999 		sv_catpv(d, "ALL,");
1000 	    else {
1001 		sv_catpv(d, "(");
1002 		if (GvIMPORTED_SV(sv))	sv_catpv(d, " SV");
1003 		if (GvIMPORTED_AV(sv))	sv_catpv(d, " AV");
1004 		if (GvIMPORTED_HV(sv))	sv_catpv(d, " HV");
1005 		if (GvIMPORTED_CV(sv))	sv_catpv(d, " CV");
1006 		sv_catpv(d, " ),");
1007 	    }
1008 	}
1009 	/* FALL THROUGH */
1010     default:
1011 	if (SvEVALED(sv))	sv_catpv(d, "EVALED,");
1012 	if (SvIsUV(sv))		sv_catpv(d, "IsUV,");
1013 	break;
1014     case SVt_PVBM:
1015 	if (SvTAIL(sv))		sv_catpv(d, "TAIL,");
1016 	if (SvVALID(sv))	sv_catpv(d, "VALID,");
1017 	break;
1018     case SVt_PVMG:
1019 	if (flags & SVpad_TYPED)
1020 				sv_catpv(d, "TYPED,");
1021 	break;
1022     }
1023     if (SvPOK(sv) && SvUTF8(sv))
1024         sv_catpv(d, "UTF8");
1025 
1026     if (*(SvEND(d) - 1) == ',')
1027 	SvPVX(d)[--SvCUR(d)] = '\0';
1028     sv_catpv(d, ")");
1029     s = SvPVX(d);
1030 
1031     Perl_dump_indent(aTHX_ level, file, "SV = ");
1032     switch (type) {
1033     case SVt_NULL:
1034 	PerlIO_printf(file, "NULL%s\n", s);
1035 	SvREFCNT_dec(d);
1036 	return;
1037     case SVt_IV:
1038 	PerlIO_printf(file, "IV%s\n", s);
1039 	break;
1040     case SVt_NV:
1041 	PerlIO_printf(file, "NV%s\n", s);
1042 	break;
1043     case SVt_RV:
1044 	PerlIO_printf(file, "RV%s\n", s);
1045 	break;
1046     case SVt_PV:
1047 	PerlIO_printf(file, "PV%s\n", s);
1048 	break;
1049     case SVt_PVIV:
1050 	PerlIO_printf(file, "PVIV%s\n", s);
1051 	break;
1052     case SVt_PVNV:
1053 	PerlIO_printf(file, "PVNV%s\n", s);
1054 	break;
1055     case SVt_PVBM:
1056 	PerlIO_printf(file, "PVBM%s\n", s);
1057 	break;
1058     case SVt_PVMG:
1059 	PerlIO_printf(file, "PVMG%s\n", s);
1060 	break;
1061     case SVt_PVLV:
1062 	PerlIO_printf(file, "PVLV%s\n", s);
1063 	break;
1064     case SVt_PVAV:
1065 	PerlIO_printf(file, "PVAV%s\n", s);
1066 	break;
1067     case SVt_PVHV:
1068 	PerlIO_printf(file, "PVHV%s\n", s);
1069 	break;
1070     case SVt_PVCV:
1071 	PerlIO_printf(file, "PVCV%s\n", s);
1072 	break;
1073     case SVt_PVGV:
1074 	PerlIO_printf(file, "PVGV%s\n", s);
1075 	break;
1076     case SVt_PVFM:
1077 	PerlIO_printf(file, "PVFM%s\n", s);
1078 	break;
1079     case SVt_PVIO:
1080 	PerlIO_printf(file, "PVIO%s\n", s);
1081 	break;
1082     default:
1083 	PerlIO_printf(file, "UNKNOWN(0x%"UVxf") %s\n", (UV)type, s);
1084 	SvREFCNT_dec(d);
1085 	return;
1086     }
1087     if (type >= SVt_PVIV || type == SVt_IV) {
1088 	if (SvIsUV(sv))
1089 	    Perl_dump_indent(aTHX_ level, file, "  UV = %"UVuf, (UV)SvUVX(sv));
1090 	else
1091 	    Perl_dump_indent(aTHX_ level, file, "  IV = %"IVdf, (IV)SvIVX(sv));
1092 	if (SvOOK(sv))
1093 	    PerlIO_printf(file, "  (OFFSET)");
1094 	PerlIO_putc(file, '\n');
1095     }
1096     if (type >= SVt_PVNV || type == SVt_NV) {
1097 	STORE_NUMERIC_LOCAL_SET_STANDARD();
1098 	/* %Vg doesn't work? --jhi */
1099 #ifdef USE_LONG_DOUBLE
1100 	Perl_dump_indent(aTHX_ level, file, "  NV = %.*" PERL_PRIgldbl "\n", LDBL_DIG, SvNVX(sv));
1101 #else
1102 	Perl_dump_indent(aTHX_ level, file, "  NV = %.*g\n", DBL_DIG, SvNVX(sv));
1103 #endif
1104 	RESTORE_NUMERIC_LOCAL();
1105     }
1106     if (SvROK(sv)) {
1107 	Perl_dump_indent(aTHX_ level, file, "  RV = 0x%"UVxf"\n", PTR2UV(SvRV(sv)));
1108 	if (nest < maxnest)
1109 	    do_sv_dump(level+1, file, SvRV(sv), nest+1, maxnest, dumpops, pvlim);
1110 	SvREFCNT_dec(d);
1111 	return;
1112     }
1113     if (type < SVt_PV) {
1114 	SvREFCNT_dec(d);
1115 	return;
1116     }
1117     if (type <= SVt_PVLV) {
1118 	if (SvPVX(sv)) {
1119 	    Perl_dump_indent(aTHX_ level, file,"  PV = 0x%"UVxf" ", PTR2UV(SvPVX(sv)));
1120 	    if (SvOOK(sv))
1121 		PerlIO_printf(file, "( %s . ) ", pv_display(d, SvPVX(sv)-SvIVX(sv), SvIVX(sv), 0, pvlim));
1122 	    PerlIO_printf(file, "%s", pv_display(d, SvPVX(sv), SvCUR(sv), SvLEN(sv), pvlim));
1123 	    if (SvUTF8(sv)) /* the 8?  \x{....} */
1124 	        PerlIO_printf(file, " [UTF8 \"%s\"]", sv_uni_display(d, sv, 8 * sv_len_utf8(sv), UNI_DISPLAY_QQ));
1125 	    PerlIO_printf(file, "\n");
1126 	    Perl_dump_indent(aTHX_ level, file, "  CUR = %"IVdf"\n", (IV)SvCUR(sv));
1127 	    Perl_dump_indent(aTHX_ level, file, "  LEN = %"IVdf"\n", (IV)SvLEN(sv));
1128 	}
1129 	else
1130 	    Perl_dump_indent(aTHX_ level, file, "  PV = 0\n");
1131     }
1132     if (type >= SVt_PVMG) {
1133 	if (SvMAGIC(sv))
1134             do_magic_dump(level, file, SvMAGIC(sv), nest, maxnest, dumpops, pvlim);
1135 	if (SvSTASH(sv))
1136 	    do_hv_dump(level, file, "  STASH", SvSTASH(sv));
1137     }
1138     switch (type) {
1139     case SVt_PVLV:
1140 	Perl_dump_indent(aTHX_ level, file, "  TYPE = %c\n", LvTYPE(sv));
1141 	Perl_dump_indent(aTHX_ level, file, "  TARGOFF = %"IVdf"\n", (IV)LvTARGOFF(sv));
1142 	Perl_dump_indent(aTHX_ level, file, "  TARGLEN = %"IVdf"\n", (IV)LvTARGLEN(sv));
1143 	Perl_dump_indent(aTHX_ level, file, "  TARG = 0x%"UVxf"\n", PTR2UV(LvTARG(sv)));
1144 	/* XXX level+1 ??? */
1145 	do_sv_dump(level, file, LvTARG(sv), nest+1, maxnest, dumpops, pvlim);
1146 	break;
1147     case SVt_PVAV:
1148 	Perl_dump_indent(aTHX_ level, file, "  ARRAY = 0x%"UVxf, PTR2UV(AvARRAY(sv)));
1149 	if (AvARRAY(sv) != AvALLOC(sv)) {
1150 	    PerlIO_printf(file, " (offset=%"IVdf")\n", (IV)(AvARRAY(sv) - AvALLOC(sv)));
1151 	    Perl_dump_indent(aTHX_ level, file, "  ALLOC = 0x%"UVxf"\n", PTR2UV(AvALLOC(sv)));
1152 	}
1153 	else
1154 	    PerlIO_putc(file, '\n');
1155 	Perl_dump_indent(aTHX_ level, file, "  FILL = %"IVdf"\n", (IV)AvFILLp(sv));
1156 	Perl_dump_indent(aTHX_ level, file, "  MAX = %"IVdf"\n", (IV)AvMAX(sv));
1157 	Perl_dump_indent(aTHX_ level, file, "  ARYLEN = 0x%"UVxf"\n", PTR2UV(AvARYLEN(sv)));
1158 	flags = AvFLAGS(sv);
1159 	sv_setpv(d, "");
1160 	if (flags & AVf_REAL)	sv_catpv(d, ",REAL");
1161 	if (flags & AVf_REIFY)	sv_catpv(d, ",REIFY");
1162 	if (flags & AVf_REUSED)	sv_catpv(d, ",REUSED");
1163 	Perl_dump_indent(aTHX_ level, file, "  FLAGS = (%s)\n", SvCUR(d) ? SvPVX(d) + 1 : "");
1164 	if (nest < maxnest && av_len((AV*)sv) >= 0) {
1165 	    int count;
1166 	    for (count = 0; count <=  av_len((AV*)sv) && count < maxnest; count++) {
1167 		SV** elt = av_fetch((AV*)sv,count,0);
1168 
1169 		Perl_dump_indent(aTHX_ level + 1, file, "Elt No. %"IVdf"\n", (IV)count);
1170 		if (elt)
1171 		    do_sv_dump(level+1, file, *elt, nest+1, maxnest, dumpops, pvlim);
1172 	    }
1173 	}
1174 	break;
1175     case SVt_PVHV:
1176 	Perl_dump_indent(aTHX_ level, file, "  ARRAY = 0x%"UVxf, PTR2UV(HvARRAY(sv)));
1177 	if (HvARRAY(sv) && HvKEYS(sv)) {
1178 	    /* Show distribution of HEs in the ARRAY */
1179 	    int freq[200];
1180 #define FREQ_MAX (sizeof freq / sizeof freq[0] - 1)
1181 	    int i;
1182 	    int max = 0;
1183 	    U32 pow2 = 2, keys = HvKEYS(sv);
1184 	    NV theoret, sum = 0;
1185 
1186 	    PerlIO_printf(file, "  (");
1187 	    Zero(freq, FREQ_MAX + 1, int);
1188 	    for (i = 0; (STRLEN)i <= HvMAX(sv); i++) {
1189 		HE* h; int count = 0;
1190                 for (h = HvARRAY(sv)[i]; h; h = HeNEXT(h))
1191 		    count++;
1192 		if (count > FREQ_MAX)
1193 		    count = FREQ_MAX;
1194 	        freq[count]++;
1195 	        if (max < count)
1196 		    max = count;
1197 	    }
1198 	    for (i = 0; i <= max; i++) {
1199 		if (freq[i]) {
1200 		    PerlIO_printf(file, "%d%s:%d", i,
1201 				  (i == FREQ_MAX) ? "+" : "",
1202 				  freq[i]);
1203 		    if (i != max)
1204 			PerlIO_printf(file, ", ");
1205 		}
1206             }
1207 	    PerlIO_putc(file, ')');
1208 	    /* The "quality" of a hash is defined as the total number of
1209 	       comparisons needed to access every element once, relative
1210 	       to the expected number needed for a random hash.
1211 
1212 	       The total number of comparisons is equal to the sum of
1213 	       the squares of the number of entries in each bucket.
1214 	       For a random hash of n keys into k buckets, the expected
1215 	       value is
1216 				n + n(n-1)/2k
1217 	    */
1218 
1219 	    for (i = max; i > 0; i--) { /* Precision: count down. */
1220 		sum += freq[i] * i * i;
1221             }
1222 	    while ((keys = keys >> 1))
1223 		pow2 = pow2 << 1;
1224 	    theoret = HvKEYS(sv);
1225 	    theoret += theoret * (theoret-1)/pow2;
1226 	    PerlIO_putc(file, '\n');
1227 	    Perl_dump_indent(aTHX_ level, file, "  hash quality = %.1"NVff"%%", theoret/sum*100);
1228 	}
1229 	PerlIO_putc(file, '\n');
1230 	Perl_dump_indent(aTHX_ level, file, "  KEYS = %"IVdf"\n", (IV)HvKEYS(sv));
1231 	Perl_dump_indent(aTHX_ level, file, "  FILL = %"IVdf"\n", (IV)HvFILL(sv));
1232 	Perl_dump_indent(aTHX_ level, file, "  MAX = %"IVdf"\n", (IV)HvMAX(sv));
1233 	Perl_dump_indent(aTHX_ level, file, "  RITER = %"IVdf"\n", (IV)HvRITER(sv));
1234 	Perl_dump_indent(aTHX_ level, file, "  EITER = 0x%"UVxf"\n", PTR2UV(HvEITER(sv)));
1235 	if (HvPMROOT(sv))
1236 	    Perl_dump_indent(aTHX_ level, file, "  PMROOT = 0x%"UVxf"\n", PTR2UV(HvPMROOT(sv)));
1237 	if (HvNAME(sv))
1238 	    Perl_dump_indent(aTHX_ level, file, "  NAME = \"%s\"\n", HvNAME(sv));
1239 	if (nest < maxnest && !HvEITER(sv)) { /* Try to preserve iterator */
1240 	    HE *he;
1241 	    HV *hv = (HV*)sv;
1242 	    int count = maxnest - nest;
1243 
1244 	    hv_iterinit(hv);
1245 	    while ((he = hv_iternext_flags(hv, HV_ITERNEXT_WANTPLACEHOLDERS))
1246                    && count--) {
1247 		SV *elt, *keysv;
1248 		char *keypv;
1249 		STRLEN len;
1250 		U32 hash = HeHASH(he);
1251 
1252 		keysv = hv_iterkeysv(he);
1253 		keypv = SvPV(keysv, len);
1254 		elt = hv_iterval(hv, he);
1255 		Perl_dump_indent(aTHX_ level+1, file, "Elt %s ", pv_display(d, keypv, len, 0, pvlim));
1256 		if (SvUTF8(keysv))
1257 		    PerlIO_printf(file, "[UTF8 \"%s\"] ", sv_uni_display(d, keysv, 8 * sv_len_utf8(keysv), UNI_DISPLAY_QQ));
1258 		PerlIO_printf(file, "HASH = 0x%"UVxf"\n", (UV)hash);
1259 		do_sv_dump(level+1, file, elt, nest+1, maxnest, dumpops, pvlim);
1260 	    }
1261 	    hv_iterinit(hv);		/* Return to status quo */
1262 	}
1263 	break;
1264     case SVt_PVCV:
1265 	if (SvPOK(sv))
1266 	    Perl_dump_indent(aTHX_ level, file, "  PROTOTYPE = \"%s\"\n", SvPV(sv,n_a));
1267 	/* FALL THROUGH */
1268     case SVt_PVFM:
1269 	do_hv_dump(level, file, "  COMP_STASH", CvSTASH(sv));
1270 	if (CvSTART(sv))
1271 	    Perl_dump_indent(aTHX_ level, file, "  START = 0x%"UVxf" ===> %"IVdf"\n", PTR2UV(CvSTART(sv)), (IV)CvSTART(sv)->op_seq);
1272 	Perl_dump_indent(aTHX_ level, file, "  ROOT = 0x%"UVxf"\n", PTR2UV(CvROOT(sv)));
1273         if (CvROOT(sv) && dumpops)
1274 	    do_op_dump(level+1, file, CvROOT(sv));
1275 	Perl_dump_indent(aTHX_ level, file, "  XSUB = 0x%"UVxf"\n", PTR2UV(CvXSUB(sv)));
1276 	Perl_dump_indent(aTHX_ level, file, "  XSUBANY = %"IVdf"\n", (IV)CvXSUBANY(sv).any_i32);
1277  	do_gvgv_dump(level, file, "  GVGV::GV", CvGV(sv));
1278 	Perl_dump_indent(aTHX_ level, file, "  FILE = \"%s\"\n", CvFILE(sv));
1279 	Perl_dump_indent(aTHX_ level, file, "  DEPTH = %"IVdf"\n", (IV)CvDEPTH(sv));
1280 #ifdef USE_5005THREADS
1281 	Perl_dump_indent(aTHX_ level, file, "  MUTEXP = 0x%"UVxf"\n", PTR2UV(CvMUTEXP(sv)));
1282 	Perl_dump_indent(aTHX_ level, file, "  OWNER = 0x%"UVxf"\n",  PTR2UV(CvOWNER(sv)));
1283 #endif /* USE_5005THREADS */
1284 	Perl_dump_indent(aTHX_ level, file, "  FLAGS = 0x%"UVxf"\n", (UV)CvFLAGS(sv));
1285 	if (type == SVt_PVFM)
1286 	    Perl_dump_indent(aTHX_ level, file, "  LINES = %"IVdf"\n", (IV)FmLINES(sv));
1287 	Perl_dump_indent(aTHX_ level, file, "  PADLIST = 0x%"UVxf"\n", PTR2UV(CvPADLIST(sv)));
1288 	if (nest < maxnest && CvPADLIST(sv)) {
1289 	    AV* padlist = CvPADLIST(sv);
1290 	    AV* pad_name = (AV*)*av_fetch(padlist, 0, FALSE);
1291 	    AV* pad = (AV*)*av_fetch(padlist, 1, FALSE);
1292 	    SV** pname = AvARRAY(pad_name);
1293 	    SV** ppad = AvARRAY(pad);
1294 	    I32 ix;
1295 
1296 	    for (ix = 1; ix <= AvFILL(pad_name); ix++) {
1297 		if (SvPOK(pname[ix]))
1298 		    Perl_dump_indent(aTHX_ level,
1299 				/* %5d below is enough whitespace. */
1300 				file,
1301 				"%5d. 0x%"UVxf" (%s\"%s\" %"IVdf"-%"IVdf")\n",
1302 				(int)ix, PTR2UV(ppad[ix]),
1303 				SvFAKE(pname[ix]) ? "FAKE " : "",
1304 				SvPVX(pname[ix]),
1305 				(IV)SvNVX(pname[ix]),
1306 				(IV)SvIVX(pname[ix]));
1307 	    }
1308 	}
1309 	{
1310 	    CV *outside = CvOUTSIDE(sv);
1311 	    Perl_dump_indent(aTHX_ level, file, "  OUTSIDE = 0x%"UVxf" (%s)\n",
1312 			PTR2UV(outside),
1313 			(!outside ? "null"
1314 			 : CvANON(outside) ? "ANON"
1315 			 : (outside == PL_main_cv) ? "MAIN"
1316 			 : CvUNIQUE(outside) ? "UNIQUE"
1317 			 : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED"));
1318 	}
1319 	if (nest < maxnest && (CvCLONE(sv) || CvCLONED(sv)))
1320 	    do_sv_dump(level+1, file, (SV*)CvOUTSIDE(sv), nest+1, maxnest, dumpops, pvlim);
1321 	break;
1322     case SVt_PVGV:
1323 	Perl_dump_indent(aTHX_ level, file, "  NAME = \"%s\"\n", GvNAME(sv));
1324 	Perl_dump_indent(aTHX_ level, file, "  NAMELEN = %"IVdf"\n", (IV)GvNAMELEN(sv));
1325 	do_hv_dump (level, file, "  GvSTASH", GvSTASH(sv));
1326 	Perl_dump_indent(aTHX_ level, file, "  GP = 0x%"UVxf"\n", PTR2UV(GvGP(sv)));
1327 	if (!GvGP(sv))
1328 	    break;
1329 	Perl_dump_indent(aTHX_ level, file, "    SV = 0x%"UVxf"\n", PTR2UV(GvSV(sv)));
1330 	Perl_dump_indent(aTHX_ level, file, "    REFCNT = %"IVdf"\n", (IV)GvREFCNT(sv));
1331 	Perl_dump_indent(aTHX_ level, file, "    IO = 0x%"UVxf"\n", PTR2UV(GvIOp(sv)));
1332 	Perl_dump_indent(aTHX_ level, file, "    FORM = 0x%"UVxf"  \n", PTR2UV(GvFORM(sv)));
1333 	Perl_dump_indent(aTHX_ level, file, "    AV = 0x%"UVxf"\n", PTR2UV(GvAV(sv)));
1334 	Perl_dump_indent(aTHX_ level, file, "    HV = 0x%"UVxf"\n", PTR2UV(GvHV(sv)));
1335 	Perl_dump_indent(aTHX_ level, file, "    CV = 0x%"UVxf"\n", PTR2UV(GvCV(sv)));
1336 	Perl_dump_indent(aTHX_ level, file, "    CVGEN = 0x%"UVxf"\n", (UV)GvCVGEN(sv));
1337 	Perl_dump_indent(aTHX_ level, file, "    GPFLAGS = 0x%"UVxf"\n", (UV)GvGPFLAGS(sv));
1338 	Perl_dump_indent(aTHX_ level, file, "    LINE = %"IVdf"\n", (IV)GvLINE(sv));
1339 	Perl_dump_indent(aTHX_ level, file, "    FILE = \"%s\"\n", GvFILE(sv));
1340 	Perl_dump_indent(aTHX_ level, file, "    FLAGS = 0x%"UVxf"\n", (UV)GvFLAGS(sv));
1341 	do_gv_dump (level, file, "    EGV", GvEGV(sv));
1342 	break;
1343     case SVt_PVIO:
1344 	Perl_dump_indent(aTHX_ level, file, "  IFP = 0x%"UVxf"\n", PTR2UV(IoIFP(sv)));
1345 	Perl_dump_indent(aTHX_ level, file, "  OFP = 0x%"UVxf"\n", PTR2UV(IoOFP(sv)));
1346 	Perl_dump_indent(aTHX_ level, file, "  DIRP = 0x%"UVxf"\n", PTR2UV(IoDIRP(sv)));
1347 	Perl_dump_indent(aTHX_ level, file, "  LINES = %"IVdf"\n", (IV)IoLINES(sv));
1348 	Perl_dump_indent(aTHX_ level, file, "  PAGE = %"IVdf"\n", (IV)IoPAGE(sv));
1349 	Perl_dump_indent(aTHX_ level, file, "  PAGE_LEN = %"IVdf"\n", (IV)IoPAGE_LEN(sv));
1350 	Perl_dump_indent(aTHX_ level, file, "  LINES_LEFT = %"IVdf"\n", (IV)IoLINES_LEFT(sv));
1351         if (IoTOP_NAME(sv))
1352             Perl_dump_indent(aTHX_ level, file, "  TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
1353 	do_gv_dump (level, file, "  TOP_GV", IoTOP_GV(sv));
1354         if (IoFMT_NAME(sv))
1355             Perl_dump_indent(aTHX_ level, file, "  FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
1356 	do_gv_dump (level, file, "  FMT_GV", IoFMT_GV(sv));
1357         if (IoBOTTOM_NAME(sv))
1358             Perl_dump_indent(aTHX_ level, file, "  BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
1359 	do_gv_dump (level, file, "  BOTTOM_GV", IoBOTTOM_GV(sv));
1360 	Perl_dump_indent(aTHX_ level, file, "  SUBPROCESS = %"IVdf"\n", (IV)IoSUBPROCESS(sv));
1361 	if (isPRINT(IoTYPE(sv)))
1362             Perl_dump_indent(aTHX_ level, file, "  TYPE = '%c'\n", IoTYPE(sv));
1363 	else
1364             Perl_dump_indent(aTHX_ level, file, "  TYPE = '\\%o'\n", IoTYPE(sv));
1365 	Perl_dump_indent(aTHX_ level, file, "  FLAGS = 0x%"UVxf"\n", (UV)IoFLAGS(sv));
1366 	break;
1367     }
1368     SvREFCNT_dec(d);
1369 }
1370 
1371 void
1372 Perl_sv_dump(pTHX_ SV *sv)
1373 {
1374     do_sv_dump(0, Perl_debug_log, sv, 0, 0, 0, 0);
1375 }
1376 
1377 int
1378 Perl_runops_debug(pTHX)
1379 {
1380     if (!PL_op) {
1381 	if (ckWARN_d(WARN_DEBUGGING))
1382 	    Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "NULL OP IN RUN");
1383 	return 0;
1384     }
1385 
1386     do {
1387 	PERL_ASYNC_CHECK();
1388 	if (PL_debug) {
1389 	    if (PL_watchaddr != 0 && *PL_watchaddr != PL_watchok)
1390 		PerlIO_printf(Perl_debug_log,
1391 			      "WARNING: %"UVxf" changed from %"UVxf" to %"UVxf"\n",
1392 			      PTR2UV(PL_watchaddr), PTR2UV(PL_watchok),
1393 			      PTR2UV(*PL_watchaddr));
1394 	    if (DEBUG_s_TEST_) debstack();
1395 	    if (DEBUG_t_TEST_) debop(PL_op);
1396 	    if (DEBUG_P_TEST_) debprof(PL_op);
1397 	}
1398     } while ((PL_op = CALL_FPTR(PL_op->op_ppaddr)(aTHX)));
1399 
1400     TAINT_NOT;
1401     return 0;
1402 }
1403 
1404 I32
1405 Perl_debop(pTHX_ OP *o)
1406 {
1407     AV *padlist, *comppad;
1408     CV *cv;
1409     SV *sv;
1410     STRLEN n_a;
1411 
1412     if (CopSTASH_eq(PL_curcop, PL_debstash) && !DEBUG_J_TEST_)
1413 	return 0;
1414 
1415     Perl_deb(aTHX_ "%s", OP_NAME(o));
1416     switch (o->op_type) {
1417     case OP_CONST:
1418 	PerlIO_printf(Perl_debug_log, "(%s)", SvPEEK(cSVOPo_sv));
1419 	break;
1420     case OP_GVSV:
1421     case OP_GV:
1422 	if (cGVOPo_gv) {
1423 	    sv = NEWSV(0,0);
1424 	    gv_fullname3(sv, cGVOPo_gv, Nullch);
1425 	    PerlIO_printf(Perl_debug_log, "(%s)", SvPV(sv, n_a));
1426 	    SvREFCNT_dec(sv);
1427 	}
1428 	else
1429 	    PerlIO_printf(Perl_debug_log, "(NULL)");
1430 	break;
1431     case OP_PADSV:
1432     case OP_PADAV:
1433     case OP_PADHV:
1434 	/* print the lexical's name */
1435         cv = deb_curcv(cxstack_ix);
1436         if (cv) {
1437             padlist = CvPADLIST(cv);
1438             comppad = (AV*)(*av_fetch(padlist, 0, FALSE));
1439             sv = *av_fetch(comppad, o->op_targ, FALSE);
1440         } else
1441             sv = Nullsv;
1442         if (sv)
1443            PerlIO_printf(Perl_debug_log, "(%s)", SvPV_nolen(sv));
1444         else
1445            PerlIO_printf(Perl_debug_log, "[%"UVuf"]", (UV)o->op_targ);
1446         break;
1447     default:
1448 	break;
1449     }
1450     PerlIO_printf(Perl_debug_log, "\n");
1451     return 0;
1452 }
1453 
1454 STATIC CV*
1455 S_deb_curcv(pTHX_ I32 ix)
1456 {
1457     PERL_CONTEXT *cx = &cxstack[ix];
1458     if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT)
1459         return cx->blk_sub.cv;
1460     else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
1461         return PL_compcv;
1462     else if (ix == 0 && PL_curstackinfo->si_type == PERLSI_MAIN)
1463         return PL_main_cv;
1464     else if (ix <= 0)
1465         return Nullcv;
1466     else
1467         return deb_curcv(ix - 1);
1468 }
1469 
1470 void
1471 Perl_watch(pTHX_ char **addr)
1472 {
1473     PL_watchaddr = addr;
1474     PL_watchok = *addr;
1475     PerlIO_printf(Perl_debug_log, "WATCHING, %"UVxf" is currently %"UVxf"\n",
1476 	PTR2UV(PL_watchaddr), PTR2UV(PL_watchok));
1477 }
1478 
1479 STATIC void
1480 S_debprof(pTHX_ OP *o)
1481 {
1482     if (CopSTASH_eq(PL_curcop, PL_debstash) && !DEBUG_J_TEST_)
1483 	return;
1484     if (!PL_profiledata)
1485 	Newz(000, PL_profiledata, MAXO, U32);
1486     ++PL_profiledata[o->op_type];
1487 }
1488 
1489 void
1490 Perl_debprofdump(pTHX)
1491 {
1492     unsigned i;
1493     if (!PL_profiledata)
1494 	return;
1495     for (i = 0; i < MAXO; i++) {
1496 	if (PL_profiledata[i])
1497 	    PerlIO_printf(Perl_debug_log,
1498 			  "%5lu %s\n", (unsigned long)PL_profiledata[i],
1499                                        PL_op_name[i]);
1500     }
1501 }
1502