1 /* $RCSfile: sv.c,v $$Revision: 4.1 $$Date: 92/08/07 18:26:45 $
3 * Copyright (c) 1991, Larry Wall
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.
9 * Revision 4.1 92/08/07 18:26:45 lwall
11 * Revision 4.0.1.6 92/06/11 21:14:21 lwall
12 * patch34: quotes containing subscripts containing variables didn't parse right
14 * Revision 4.0.1.5 92/06/08 15:40:43 lwall
15 * patch20: removed implicit int declarations on functions
16 * patch20: Perl now distinguishes overlapped copies from non-overlapped
17 * patch20: paragraph mode now skips extra newlines automatically
18 * patch20: fixed memory leak in doube-quote interpretation
19 * patch20: made /\$$foo/ look for literal '$foo'
20 * patch20: "$var{$foo'bar}" didn't scan subscript correctly
21 * patch20: a splice on non-existent array elements could dump core
22 * patch20: running taintperl explicitly now does checks even if $< == $>
24 * Revision 4.0.1.4 91/11/05 18:40:51 lwall
25 * patch11: $foo .= <BAR> could overrun malloced memory
26 * patch11: \$ didn't always make it through double-quoter to regexp routines
27 * patch11: prepared for ctype implementations that don't define isascii()
29 * Revision 4.0.1.3 91/06/10 01:27:54 lwall
30 * patch10: $) and $| incorrectly handled in run-time patterns
32 * Revision 4.0.1.2 91/06/07 11:58:13 lwall
33 * patch4: new copyright notice
34 * patch4: taint check on undefined string could cause core dump
36 * Revision 4.0.1.1 91/04/12 09:15:30 lwall
37 * patch1: fixed undefined environ problem
38 * patch1: substr($ENV{"PATH"},0,0) = "/foo:" didn't modify environment
39 * patch1: $foo .= <BAR> could cause core dump for certain lengths of $foo
41 * Revision 4.0 91/03/20 01:39:55 lwall
61 sv_root = (SV*)SvANY(sv);
83 sv_root = (SV*)safemalloc(1012);
85 svend = &sv[1008 / sizeof(SV) - 1];
87 SvANY(sv) = (SV*)(sv + 1);
88 SvFLAGS(sv) = SVTYPEMASK;
93 SvANY(sv) = sv_arenaroot;
94 sv_arenaroot = sv_root;
104 for (sv = sv_arenaroot; sv; sv = SvANY(sv)) {
105 svend = &sv[1008 / sizeof(SV)];
107 if (SvTYPE(sv) != SVTYPEMASK) {
108 fprintf(stderr, "****\n");
122 for (sv = sv_arenaroot; sv; sv = SvANY(sv)) {
123 svend = &sv[1008 / sizeof(SV)];
125 if (SvREFCNT(sv) == 1 && SvROK(sv)) {
126 DEBUG_D((fprintf(stderr, "Cleaning ref:\n "), sv_dump(sv));)
127 SvFLAGS(SvRV(sv)) |= SVf_BREAK;
128 SvFLAGS(sv) |= SVf_BREAK;
142 for (sv = sv_arenaroot; sv; sv = SvANY(sv)) {
143 svend = &sv[1008 / sizeof(SV)];
145 if (SvTYPE(sv) != SVTYPEMASK) {
146 DEBUG_D((fprintf(stderr, "Cleaning loops:\n "), sv_dump(sv));)
147 SvFLAGS(sv) |= SVf_BREAK;
155 static XPVIV* more_xiv();
163 xiv_root = *(I32**)xiv;
164 return (XPVIV*)((char*)xiv - sizeof(XPV));
173 I32* xiv = (I32*)((char*)(p) + sizeof(XPV));
174 *(I32**)xiv = xiv_root;
183 register I32* xivend;
184 xiv = (I32*)safemalloc(1008);
185 xivend = &xiv[1008 / sizeof(I32) - 1];
186 xiv += (sizeof(XPV) - 1) / sizeof(I32) + 1; /* fudge by size of XPV */
188 while (xiv < xivend) {
189 *(I32**)xiv = (I32*)(xiv + 1); /* XXX busted on Alpha? */
196 static XPVNV* more_xnv();
204 xnv_root = *(double**)xnv;
205 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
214 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
215 *(double**)xnv = xnv_root;
223 register double* xnv;
224 register double* xnvend;
225 xnv = (double*)safemalloc(1008);
226 xnvend = &xnv[1008 / sizeof(double) - 1];
227 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
229 while (xnv < xnvend) {
230 *(double**)xnv = (double*)(xnv + 1);
237 static XRV* more_xrv();
245 xrv_root = (XRV*)xrv->xrv_rv;
255 p->xrv_rv = (SV*)xrv_root;
264 register XRV* xrvend;
265 xrv_root = (XRV*)safemalloc(1008);
267 xrvend = &xrv[1008 / sizeof(XRV) - 1];
268 while (xrv < xrvend) {
269 xrv->xrv_rv = (SV*)(xrv + 1);
276 static XPV* more_xpv();
284 xpv_root = (XPV*)xpv->xpv_pv;
294 p->xpv_pv = (char*)xpv_root;
303 register XPV* xpvend;
304 xpv_root = (XPV*)safemalloc(1008);
306 xpvend = &xpv[1008 / sizeof(XPV) - 1];
307 while (xpv < xpvend) {
308 xpv->xpv_pv = (char*)(xpv + 1);
317 #define new_SV() sv = (SV*)safemalloc(sizeof(SV))
318 #define del_SV(p) free((char*)p)
325 sv_root = (SV*)SvANY(sv); \
331 SvANY(p) = sv_root; \
338 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
339 #define del_XIV(p) free((char*)p)
341 #define new_XIV() new_xiv()
342 #define del_XIV(p) del_xiv(p)
346 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
347 #define del_XNV(p) free((char*)p)
349 #define new_XNV() new_xnv()
350 #define del_XNV(p) del_xnv(p)
354 #define new_XRV() (void*)safemalloc(sizeof(XRV))
355 #define del_XRV(p) free((char*)p)
357 #define new_XRV() new_xrv()
358 #define del_XRV(p) del_xrv(p)
362 #define new_XPV() (void*)safemalloc(sizeof(XPV))
363 #define del_XPV(p) free((char*)p)
365 #define new_XPV() new_xpv()
366 #define del_XPV(p) del_xpv(p)
369 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
370 #define del_XPVIV(p) free((char*)p)
372 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
373 #define del_XPVNV(p) free((char*)p)
375 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
376 #define del_XPVMG(p) free((char*)p)
378 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
379 #define del_XPVLV(p) free((char*)p)
381 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
382 #define del_XPVAV(p) free((char*)p)
384 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
385 #define del_XPVHV(p) free((char*)p)
387 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
388 #define del_XPVCV(p) free((char*)p)
390 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
391 #define del_XPVGV(p) free((char*)p)
393 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
394 #define del_XPVBM(p) free((char*)p)
396 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
397 #define del_XPVFM(p) free((char*)p)
399 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
400 #define del_XPVIO(p) free((char*)p)
415 if (SvTYPE(sv) == mt)
418 switch (SvTYPE(sv)) {
433 nv = (double)SvIVX(sv);
439 else if (mt < SVt_PVIV)
456 pv = (char*)SvRV(sv);
460 nv = (double)(unsigned long)pv;
485 del_XPVIV(SvANY(sv));
496 del_XPVNV(SvANY(sv));
506 del_XPVMG(SvANY(sv));
509 croak("Can't upgrade that kind of scalar");
514 croak("Can't upgrade to undef");
516 SvANY(sv) = new_XIV();
520 SvANY(sv) = new_XNV();
524 SvANY(sv) = new_XRV();
529 SvANY(sv) = new_XPV();
535 SvANY(sv) = new_XPVIV();
545 SvANY(sv) = new_XPVNV();
553 SvANY(sv) = new_XPVMG();
563 SvANY(sv) = new_XPVLV();
577 SvANY(sv) = new_XPVAV();
592 SvANY(sv) = new_XPVHV();
608 SvANY(sv) = new_XPVCV();
627 SvANY(sv) = new_XPVGV();
641 SvANY(sv) = new_XPVBM();
654 SvANY(sv) = new_XPVFM();
665 SvANY(sv) = new_XPVIO();
684 IoBOTTOM_NAME(sv)= 0;
691 SvFLAGS(sv) &= ~SVTYPEMASK;
708 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
712 else if (SvREFCNT(sv) == 0 && !SvREADONLY(sv)) {
717 switch (SvTYPE(sv)) {
734 if (t - tokenbuf > 10) {
735 strcpy(tokenbuf + 3,"...");
763 sprintf(t, "CV(%s)", GvNAME(CvGV(sv)));
787 sprintf(t,"(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
789 sprintf(t,"(\"%.127s\")",SvPVX(sv));
792 sprintf(t,"(%g)",SvNVX(sv));
794 sprintf(t,"(%ld)",(long)SvIVX(sv));
807 SvLEN(sv) += SvIVX(sv);
808 SvPVX(sv) -= SvIVX(sv);
810 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
812 SvFLAGS(sv) &= ~SVf_OOK;
821 unsigned long newlen;
827 if (newlen >= 0x10000) {
828 fprintf(stderr, "Allocation too large: %lx\n", newlen);
832 if (SvTHINKFIRST(sv)) {
836 if (SvTYPE(sv) < SVt_PV) {
837 sv_upgrade(sv, SVt_PV);
840 else if (SvOOK(sv)) { /* pv is offset? */
843 if (newlen > SvLEN(sv))
844 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
848 if (newlen > SvLEN(sv)) { /* need more room? */
850 Renew(s,newlen,char);
852 New(703,s,newlen,char);
854 SvLEN_set(sv, newlen);
864 if (SvTHINKFIRST(sv)) {
865 if (SvREADONLY(sv) && curcop != &compiling)
870 switch (SvTYPE(sv)) {
872 sv_upgrade(sv, SVt_IV);
875 sv_upgrade(sv, SVt_PVNV);
879 sv_upgrade(sv, SVt_PVIV);
883 SvIOK_only(sv); /* validate number */
892 if (SvTHINKFIRST(sv)) {
893 if (SvREADONLY(sv) && curcop != &compiling)
898 if (SvTYPE(sv) < SVt_NV)
899 sv_upgrade(sv, SVt_NV);
900 else if (SvTYPE(sv) < SVt_PVNV)
901 sv_upgrade(sv, SVt_PVNV);
902 else if (SvPOK(sv)) {
906 SvNOK_only(sv); /* validate number */
916 if (SvGMAGICAL(sv)) {
921 return (I32)SvNVX(sv);
922 if (SvPOKp(sv) && SvLEN(sv))
923 return (I32)atol(SvPVX(sv));
926 if (SvTHINKFIRST(sv)) {
928 return (I32)SvRV(sv);
929 if (SvREADONLY(sv)) {
931 return (I32)SvNVX(sv);
932 if (SvPOK(sv) && SvLEN(sv))
933 return (I32)atol(SvPVX(sv));
939 switch (SvTYPE(sv)) {
941 sv_upgrade(sv, SVt_IV);
944 sv_upgrade(sv, SVt_PVIV);
947 sv_upgrade(sv, SVt_PVNV);
951 SvIVX(sv) = (I32)SvNVX(sv);
952 else if (SvPOK(sv) && SvLEN(sv)) {
953 if (dowarn && !looks_like_number(sv)) {
955 warn("Argument wasn't numeric for \"%s\"",op_name[op->op_type]);
957 warn("Argument wasn't numeric");
959 SvIVX(sv) = (I32)atol(SvPVX(sv));
964 SvUPGRADE(sv, SVt_IV);
968 DEBUG_c((stderr,"0x%lx 2iv(%ld)\n",sv,(long)SvIVX(sv)));
978 if (SvGMAGICAL(sv)) {
982 if (SvPOKp(sv) && SvLEN(sv))
983 return atof(SvPVX(sv));
985 return (double)SvIVX(sv);
988 if (SvTHINKFIRST(sv)) {
990 return (double)(unsigned long)SvRV(sv);
991 if (SvREADONLY(sv)) {
992 if (SvPOK(sv) && SvLEN(sv))
993 return atof(SvPVX(sv));
995 return (double)SvIVX(sv);
1001 if (SvTYPE(sv) < SVt_NV) {
1002 if (SvTYPE(sv) == SVt_IV)
1003 sv_upgrade(sv, SVt_PVNV);
1005 sv_upgrade(sv, SVt_NV);
1006 DEBUG_c((stderr,"0x%lx num(%g)\n",sv,SvNVX(sv)));
1008 else if (SvTYPE(sv) < SVt_PVNV)
1009 sv_upgrade(sv, SVt_PVNV);
1011 (!SvPOK(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1013 SvNVX(sv) = (double)SvIVX(sv);
1015 else if (SvPOK(sv) && SvLEN(sv)) {
1016 if (dowarn && !SvIOK(sv) && !looks_like_number(sv)) {
1018 warn("Argument wasn't numeric for \"%s\"",op_name[op->op_type]);
1020 warn("Argument wasn't numeric");
1022 SvNVX(sv) = atof(SvPVX(sv));
1030 DEBUG_c((stderr,"0x%lx 2nv(%g)\n",sv,SvNVX(sv)));
1046 if (SvGMAGICAL(sv)) {
1053 (void)sprintf(tokenbuf,"%ld",SvIVX(sv));
1054 *lp = strlen(tokenbuf);
1058 (void)sprintf(tokenbuf,"%.20g",SvNVX(sv));
1059 *lp = strlen(tokenbuf);
1065 if (SvTHINKFIRST(sv)) {
1071 switch (SvTYPE(sv)) {
1080 case SVt_PVMG: s = "SCALAR"; break;
1081 case SVt_PVLV: s = "LVALUE"; break;
1082 case SVt_PVAV: s = "ARRAY"; break;
1083 case SVt_PVHV: s = "HASH"; break;
1084 case SVt_PVCV: s = "CODE"; break;
1085 case SVt_PVGV: s = "GLOB"; break;
1086 case SVt_PVFM: s = "FORMATLINE"; break;
1087 case SVt_PVIO: s = "FILEHANDLE"; break;
1088 default: s = "UNKNOWN"; break;
1091 sprintf(tokenbuf, "%s=%s(0x%lx)",
1092 HvNAME(SvSTASH(sv)), s, (unsigned long)sv);
1094 sprintf(tokenbuf, "%s(0x%lx)", s, (unsigned long)sv);
1100 if (SvREADONLY(sv)) {
1102 (void)sprintf(tokenbuf,"%ld",SvIVX(sv));
1103 *lp = strlen(tokenbuf);
1107 (void)sprintf(tokenbuf,"%.20g",SvNVX(sv));
1108 *lp = strlen(tokenbuf);
1117 if (!SvUPGRADE(sv, SVt_PV))
1120 if (SvTYPE(sv) < SVt_PVNV)
1121 sv_upgrade(sv, SVt_PVNV);
1124 olderrno = errno; /* some Xenix systems wipe out errno here */
1125 #if defined(scs) && defined(ns32000)
1126 gcvt(SvNVX(sv),20,s);
1129 if (SvNVX(sv) == 0.0)
1130 (void)strcpy(s,"0");
1133 (void)sprintf(s,"%.20g",SvNVX(sv));
1142 else if (SvIOK(sv)) {
1143 if (SvTYPE(sv) < SVt_PVIV)
1144 sv_upgrade(sv, SVt_PVIV);
1147 olderrno = errno; /* some Xenix systems wipe out errno here */
1148 (void)sprintf(s,"%ld",SvIVX(sv));
1159 *lp = s - SvPVX(sv);
1162 DEBUG_c((stderr,"0x%lx 2pv(%s)\n",sv,SvPVX(sv)));
1166 /* This function is only called on magical items */
1175 return SvRV(sv) != 0;
1178 if ((Xpv = (XPV*)SvANY(sv)) &&
1179 (*Xpv->xpv_pv > '0' ||
1181 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
1188 return SvIVX(sv) != 0;
1191 return SvNVX(sv) != 0.0;
1198 /* Note: sv_setsv() should not be called with a source string that needs
1199 * to be reused, since it may destroy the source string if it is marked
1208 register U32 sflags;
1214 if (SvTHINKFIRST(dstr)) {
1215 if (SvREADONLY(dstr) && curcop != &compiling)
1222 stype = SvTYPE(sstr);
1223 dtype = SvTYPE(dstr);
1225 /* There's a lot of redundancy below but we're going for speed here */
1232 if (dtype <= SVt_PV) {
1234 sv_upgrade(dstr, SVt_IV);
1235 else if (dtype == SVt_PV)
1236 sv_upgrade(dstr, SVt_PVIV);
1237 else if (dtype == SVt_NV)
1238 sv_upgrade(dstr, SVt_PVNV);
1242 if (dtype <= SVt_PVIV) {
1244 sv_upgrade(dstr, SVt_NV);
1245 else if (dtype == SVt_PV)
1246 sv_upgrade(dstr, SVt_PVNV);
1247 else if (dtype == SVt_PVIV)
1248 sv_upgrade(dstr, SVt_PVNV);
1253 sv_upgrade(dstr, SVt_RV);
1257 sv_upgrade(dstr, SVt_PV);
1260 if (dtype < SVt_PVIV)
1261 sv_upgrade(dstr, SVt_PVIV);
1264 if (dtype < SVt_PVNV)
1265 sv_upgrade(dstr, SVt_PVNV);
1268 if (dtype <= SVt_PVGV) {
1269 if (dtype < SVt_PVGV)
1270 sv_upgrade(dstr, SVt_PVGV);
1277 GvIO(sstr) = newIO();
1280 GvGP(dstr) = gp_ref(GvGP(sstr));
1288 sv_upgrade(dstr, stype);
1289 if (SvGMAGICAL(sstr))
1293 sflags = SvFLAGS(sstr);
1295 if (sflags & SVf_ROK) {
1296 if (dtype >= SVt_PV) {
1297 if (dtype == SVt_PVGV) {
1298 SV *sref = SvREFCNT_inc(SvRV(sstr));
1300 GP *oldgp = GvGP(dstr);
1303 switch (SvTYPE(sref)) {
1305 dref = (SV*)GvAV(dstr);
1306 GvAV(dstr) = (AV*)sref;
1309 dref = (SV*)GvHV(dstr);
1310 GvHV(dstr) = (HV*)sref;
1313 dref = (SV*)GvCV(dstr);
1314 GvCV(dstr) = (CV*)sref;
1317 dref = (SV*)GvSV(dstr);
1327 Safefree(SvPVX(dstr));
1330 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
1333 if (sflags & SVp_NOK) {
1335 SvNVX(dstr) = SvNVX(sstr);
1337 if (sflags & SVp_IOK) {
1339 SvIVX(dstr) = SvIVX(sstr);
1342 else if (sflags & SVp_POK) {
1345 * Check to see if we can just swipe the string. If so, it's a
1346 * possible small lose on short strings, but a big win on long ones.
1347 * It might even be a win on short strings if SvPVX(dstr)
1348 * has to be allocated and SvPVX(sstr) has to be freed.
1351 if (SvTEMP(sstr)) { /* slated for free anyway? */
1354 Safefree(SvPVX(dstr));
1356 SvPV_set(dstr, SvPVX(sstr));
1357 SvLEN_set(dstr, SvLEN(sstr));
1358 SvCUR_set(dstr, SvCUR(sstr));
1361 SvPV_set(sstr, Nullch);
1363 SvPOK_off(sstr); /* wipe out any weird flags */
1364 SvPVX(sstr) = 0; /* so sstr frees uneventfully */
1366 else { /* have to copy actual string */
1367 STRLEN len = SvCUR(sstr);
1369 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
1370 Move(SvPVX(sstr),SvPVX(dstr),len,char);
1371 SvCUR_set(dstr, len);
1372 *SvEND(dstr) = '\0';
1376 if (sflags & SVp_NOK) {
1378 SvNVX(dstr) = SvNVX(sstr);
1380 if (sflags & SVp_IOK) {
1382 SvIVX(dstr) = SvIVX(sstr);
1385 else if (sflags & SVp_NOK) {
1386 SvNVX(dstr) = SvNVX(sstr);
1390 SvIVX(dstr) = SvIVX(sstr);
1393 else if (sflags & SVp_IOK) {
1395 SvIVX(dstr) = SvIVX(sstr);
1404 sv_setpvn(sv,ptr,len)
1407 register STRLEN len;
1409 if (SvTHINKFIRST(sv)) {
1410 if (SvREADONLY(sv) && curcop != &compiling)
1419 if (!SvUPGRADE(sv, SVt_PV))
1421 SvGROW(sv, len + 1);
1423 Move(ptr,SvPVX(sv),len,char);
1426 SvPOK_only(sv); /* validate pointer */
1435 register STRLEN len;
1437 if (SvTHINKFIRST(sv)) {
1438 if (SvREADONLY(sv) && curcop != &compiling)
1448 if (!SvUPGRADE(sv, SVt_PV))
1450 SvGROW(sv, len + 1);
1451 Move(ptr,SvPVX(sv),len+1,char);
1453 SvPOK_only(sv); /* validate pointer */
1458 sv_usepvn(sv,ptr,len)
1461 register STRLEN len;
1463 if (SvTHINKFIRST(sv)) {
1464 if (SvREADONLY(sv) && curcop != &compiling)
1469 if (!SvUPGRADE(sv, SVt_PV))
1476 Safefree(SvPVX(sv));
1477 Renew(ptr, len+1, char);
1480 SvLEN_set(sv, len+1);
1482 SvPOK_only(sv); /* validate pointer */
1487 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
1491 register STRLEN delta;
1493 if (!ptr || !SvPOK(sv))
1495 if (SvTHINKFIRST(sv)) {
1496 if (SvREADONLY(sv) && curcop != &compiling)
1501 if (SvTYPE(sv) < SVt_PVIV)
1502 sv_upgrade(sv,SVt_PVIV);
1506 SvFLAGS(sv) |= SVf_OOK;
1508 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
1509 delta = ptr - SvPVX(sv);
1517 sv_catpvn(sv,ptr,len)
1520 register STRLEN len;
1524 if (SvTHINKFIRST(sv)) {
1525 if (SvREADONLY(sv) && curcop != &compiling)
1530 sv_setpvn(sv, s, tlen);
1534 SvGROW(sv, tlen + len + 1);
1535 Move(ptr,SvPVX(sv)+tlen,len,char);
1538 SvPOK_only(sv); /* validate pointer */
1551 if (s = SvPV(sstr, len))
1552 sv_catpvn(dstr,s,len);
1560 register STRLEN len;
1564 if (SvTHINKFIRST(sv)) {
1565 if (SvREADONLY(sv) && curcop != &compiling)
1574 SvGROW(sv, tlen + len + 1);
1575 Move(ptr,SvPVX(sv)+tlen,len+1,char);
1577 SvPOK_only(sv); /* validate pointer */
1597 sv_upgrade(sv, SVt_PV);
1598 SvGROW(sv, len + 1);
1605 sv_magic(sv, obj, how, name, namlen)
1612 sv_magic(register SV *sv, SV *obj, char how, char *name, I32 namlen)
1613 #endif /* STANDARD_C */
1617 if (SvTHINKFIRST(sv)) {
1618 if (SvREADONLY(sv) && curcop != &compiling)
1621 if (SvMAGICAL(sv)) {
1622 if (SvMAGIC(sv) && mg_find(sv, how))
1626 if (!SvUPGRADE(sv, SVt_PVMG))
1629 Newz(702,mg, 1, MAGIC);
1630 mg->mg_moremagic = SvMAGIC(sv);
1636 mg->mg_obj = SvREFCNT_inc(obj);
1638 mg->mg_len = namlen;
1639 if (name && namlen >= 0)
1640 mg->mg_ptr = nsavestr(name, namlen);
1643 mg->mg_virtual = &vtbl_sv;
1646 mg->mg_virtual = &vtbl_bm;
1649 mg->mg_virtual = &vtbl_env;
1652 mg->mg_virtual = &vtbl_envelem;
1655 mg->mg_virtual = &vtbl_mglob;
1658 mg->mg_virtual = &vtbl_isa;
1661 mg->mg_virtual = &vtbl_isaelem;
1667 mg->mg_virtual = &vtbl_dbline;
1670 mg->mg_virtual = &vtbl_pack;
1673 mg->mg_virtual = &vtbl_packelem;
1676 mg->mg_virtual = &vtbl_sig;
1679 mg->mg_virtual = &vtbl_sigelem;
1682 mg->mg_virtual = &vtbl_taint;
1685 mg->mg_virtual = &vtbl_uvar;
1688 mg->mg_virtual = &vtbl_vec;
1691 mg->mg_virtual = &vtbl_substr;
1694 mg->mg_virtual = &vtbl_glob;
1697 mg->mg_virtual = &vtbl_arylen;
1700 croak("Don't know how to handle magic of type '%c'", how);
1704 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
1709 sv_unmagic(sv, type)
1713 sv_unmagic(SV *sv, char type)
1714 #endif /* STANDARD_C */
1721 for (mg = *mgp; mg; mg = *mgp) {
1722 if (mg->mg_type == type) {
1723 MGVTBL* vtbl = mg->mg_virtual;
1724 *mgp = mg->mg_moremagic;
1725 if (vtbl && vtbl->svt_free)
1726 (*vtbl->svt_free)(sv, mg);
1727 if (mg->mg_ptr && mg->mg_type != 'g')
1728 Safefree(mg->mg_ptr);
1729 SvREFCNT_dec(mg->mg_obj);
1733 mgp = &mg->mg_moremagic;
1737 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
1744 sv_insert(bigstr,offset,len,little,littlelen)
1753 register char *midend;
1754 register char *bigend;
1758 croak("Can't modify non-existent substring");
1759 if (SvTHINKFIRST(bigstr)) {
1760 if (SvREADONLY(bigstr) && curcop != &compiling)
1767 i = littlelen - len;
1768 if (i > 0) { /* string might grow */
1769 if (!SvUPGRADE(bigstr, SVt_PV))
1771 SvGROW(bigstr, SvCUR(bigstr) + i + 1);
1772 big = SvPVX(bigstr);
1773 mid = big + offset + len;
1774 midend = bigend = big + SvCUR(bigstr);
1777 while (midend > mid) /* shove everything down */
1778 *--bigend = *--midend;
1779 Move(little,big+offset,littlelen,char);
1785 Move(little,SvPVX(bigstr)+offset,len,char);
1790 big = SvPVX(bigstr);
1793 bigend = big + SvCUR(bigstr);
1795 if (midend > bigend)
1796 croak("panic: sv_insert");
1798 if (mid - big > bigend - midend) { /* faster to shorten from end */
1800 Move(little, mid, littlelen,char);
1803 i = bigend - midend;
1805 Move(midend, mid, i,char);
1809 SvCUR_set(bigstr, mid - big);
1812 else if (i = mid - big) { /* faster from front */
1813 midend -= littlelen;
1815 sv_chop(bigstr,midend-i);
1820 Move(little, mid, littlelen,char);
1822 else if (littlelen) {
1823 midend -= littlelen;
1824 sv_chop(bigstr,midend);
1825 Move(little,midend,littlelen,char);
1828 sv_chop(bigstr,midend);
1833 /* make sv point to what nstr did */
1840 U32 refcnt = SvREFCNT(sv);
1841 if (SvTHINKFIRST(sv)) {
1842 if (SvREADONLY(sv) && curcop != &compiling)
1847 if (SvREFCNT(nsv) != 1)
1848 warn("Reference miscount in sv_replace()");
1849 if (SvMAGICAL(sv)) {
1850 SvUPGRADE(nsv, SVt_PVMG);
1851 SvMAGIC(nsv) = SvMAGIC(sv);
1858 StructCopy(nsv,sv,SV);
1859 SvREFCNT(sv) = refcnt;
1868 assert(SvREFCNT(sv) == 0);
1872 BINOP myop; /* fake syntax tree node */
1875 SvOBJECT_off(sv); /* Curse the object. */
1881 curcop = &compiling;
1882 curstash = SvSTASH(sv);
1883 destructor = gv_fetchpv("DESTROY", FALSE);
1885 if (destructor && GvCV(destructor)) {
1888 sv_upgrade(&ref, SVt_RV);
1889 SvRV(&ref) = SvREFCNT_inc(sv);
1894 myop.op_last = (OP*)&myop;
1895 myop.op_flags = OPf_STACKED;
1896 myop.op_next = Nullop;
1899 PUSHs((SV*)destructor);
1903 op = pp_entersubr();
1909 SvREFCNT_dec(SvSTASH(sv));
1912 switch (SvTYPE(sv)) {
1914 Safefree(IoTOP_NAME(sv));
1915 Safefree(IoFMT_NAME(sv));
1916 Safefree(IoBOTTOM_NAME(sv));
1948 SvREFCNT_dec(SvRV(sv));
1950 Safefree(SvPVX(sv));
1957 SvREFCNT_dec(SvRV(sv));
1963 switch (SvTYPE(sv)) {
1979 del_XPVIV(SvANY(sv));
1982 del_XPVNV(SvANY(sv));
1985 del_XPVMG(SvANY(sv));
1988 del_XPVLV(SvANY(sv));
1991 del_XPVAV(SvANY(sv));
1994 del_XPVHV(SvANY(sv));
1997 del_XPVCV(SvANY(sv));
2000 del_XPVGV(SvANY(sv));
2003 del_XPVBM(SvANY(sv));
2006 del_XPVFM(SvANY(sv));
2009 del_XPVIO(SvANY(sv));
2012 SvFLAGS(sv) |= SVTYPEMASK;
2030 if (SvTHINKFIRST(sv)) {
2031 if (SvREADONLY(sv)) {
2032 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2036 if (SvREFCNT(sv) == 0 && !(SvFLAGS(sv) & SVf_BREAK)) {
2037 warn("Attempt to free unreferenced scalar");
2040 if (--SvREFCNT(sv) > 0)
2044 warn("Attempt to free temp prematurely");
2084 pv1 = SvPV(str1, cur1);
2089 pv2 = SvPV(str2, cur2);
2094 return !bcmp(pv1, pv2, cur1);
2113 pv1 = SvPV(str1, cur1);
2120 pv2 = SvPV(str2, cur2);
2123 return cur2 ? -1 : 0;
2129 if (retval = memcmp(pv1, pv2, cur1))
2130 return retval < 0 ? -1 : 1;
2135 else if (retval = memcmp(pv1, pv2, cur2))
2136 return retval < 0 ? -1 : 1;
2137 else if (cur1 == cur2)
2144 sv_gets(sv,fp,append)
2149 register char *bp; /* we're going to steal some values */
2150 register I32 cnt; /* from the stdio struct and put EVERYTHING */
2151 register STDCHAR *ptr; /* in the innermost loop into registers */
2152 register I32 newline = rschar;/* (assuming >= 6 registers) */
2157 if (SvTHINKFIRST(sv)) {
2158 if (SvREADONLY(sv) && curcop != &compiling)
2163 if (!SvUPGRADE(sv, SVt_PV))
2165 if (rspara) { /* have to do this both before and after */
2166 do { /* to make sure file boundaries work right */
2174 #ifdef STDSTDIO /* Here is some breathtakingly efficient cheating */
2175 cnt = fp->_cnt; /* get count into register */
2176 SvPOK_only(sv); /* validate pointer */
2177 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
2178 if (cnt > 80 && SvLEN(sv) > append) {
2179 shortbuffered = cnt - SvLEN(sv) + append + 1;
2180 cnt -= shortbuffered;
2184 SvGROW(sv, append+cnt+2);/* (remembering cnt can be -1) */
2189 bp = SvPVX(sv) + append; /* move these two too to registers */
2194 while (--cnt >= 0) { /* this */ /* eat */
2195 if ((*bp++ = *ptr++) == newline) /* really */ /* dust */
2196 goto thats_all_folks; /* screams */ /* sed :-) */
2200 if (shortbuffered) { /* oh well, must extend */
2201 cnt = shortbuffered;
2203 bpx = bp - SvPVX(sv); /* prepare for possible relocation */
2205 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
2206 bp = SvPVX(sv) + bpx; /* reconstitute our pointer */
2210 fp->_cnt = cnt; /* deregisterize cnt and ptr */
2212 i = _filbuf(fp); /* get more characters */
2214 ptr = fp->_ptr; /* reregisterize cnt and ptr */
2216 bpx = bp - SvPVX(sv); /* prepare for possible relocation */
2218 SvGROW(sv, bpx + cnt + 2);
2219 bp = SvPVX(sv) + bpx; /* reconstitute our pointer */
2221 if (i == newline) { /* all done for now? */
2223 goto thats_all_folks;
2225 else if (i == EOF) /* all done for ever? */
2226 goto thats_really_all_folks;
2227 *bp++ = i; /* now go back to screaming loop */
2231 if (rslen > 1 && (bp - SvPVX(sv) < rslen || bcmp(bp - rslen, rs, rslen)))
2232 goto screamer; /* go back to the fray */
2233 thats_really_all_folks:
2235 cnt += shortbuffered;
2236 fp->_cnt = cnt; /* put these back or we're in trouble */
2239 SvCUR_set(sv, bp - SvPVX(sv)); /* set length */
2241 #else /* !STDSTDIO */ /* The big, slow, and stupid way */
2245 register char * bpe = buf + sizeof(buf) - 3;
2249 while ((i = getc(fp)) != EOF && (*bp++ = i) != newline && bp < bpe) ;
2252 sv_catpvn(sv, buf, bp - buf);
2254 sv_setpvn(sv, buf, bp - buf);
2255 if (i != EOF /* joy */
2263 bcmp(SvPVX(sv) + SvCUR(sv) - rslen, rs, rslen)
2274 #endif /* STDSTDIO */
2285 return SvCUR(sv) - append ? SvPVX(sv) : Nullch;
2297 if (SvTHINKFIRST(sv)) {
2298 if (SvREADONLY(sv) && curcop != &compiling)
2305 flags = SvFLAGS(sv);
2306 if (flags & SVp_IOK) {
2311 if (flags & SVp_NOK) {
2316 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
2317 if (!SvUPGRADE(sv, SVt_NV))
2324 while (isALPHA(*d)) d++;
2325 while (isDIGIT(*d)) d++;
2327 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
2331 while (d >= SvPVX(sv)) {
2341 *(d--) -= 'z' - 'a' + 1;
2344 /* oh,oh, the number grew */
2345 SvGROW(sv, SvCUR(sv) + 2);
2347 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
2363 if (SvTHINKFIRST(sv)) {
2364 if (SvREADONLY(sv) && curcop != &compiling)
2371 flags = SvFLAGS(sv);
2372 if (flags & SVp_IOK) {
2377 if (flags & SVp_NOK) {
2382 if (!(flags & SVp_POK)) {
2383 if (!SvUPGRADE(sv, SVt_NV))
2389 sv_setnv(sv,atof(SvPVX(sv)) - 1.0);
2392 /* Make a string that will exist for the duration of the expression
2393 * evaluation. Actually, it may have to last longer than that, but
2394 * hopefully we won't free it until it has been assigned to a
2395 * permanent location. */
2401 Renew(tmps_stack, tmps_max, SV*);
2405 sv_mortalcopy(oldstr)
2414 sv_setsv(sv,oldstr);
2415 if (++tmps_ix >= tmps_max)
2417 tmps_stack[tmps_ix] = sv;
2430 SvFLAGS(sv) = SVs_TEMP;
2431 if (++tmps_ix >= tmps_max)
2433 tmps_stack[tmps_ix] = sv;
2437 /* same thing without the copying */
2445 if (SvTHINKFIRST(sv)) {
2446 if (SvREADONLY(sv) && curcop != &compiling)
2449 if (++tmps_ix >= tmps_max)
2451 tmps_stack[tmps_ix] = sv;
2469 sv_setpvn(sv,s,len);
2511 sv_upgrade(sv, SVt_RV);
2512 SvRV(sv) = SvREFCNT_inc(ref);
2518 /* make an exact duplicate of old */
2528 if (SvTYPE(old) == SVTYPEMASK) {
2529 warn("semi-panic: attempt to dup freed string");
2559 if (!*s) { /* reset ?? searches */
2560 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
2561 pm->op_pmflags &= ~PMf_USED;
2566 /* reset variables */
2568 if (!HvARRAY(stash))
2571 Zero(todo, 256, char);
2578 for ( ; i <= max; i++) {
2581 for (i = 0; i <= HvMAX(stash); i++) {
2582 for (entry = HvARRAY(stash)[i];
2584 entry = entry->hent_next) {
2585 if (!todo[(U8)*entry->hent_key])
2587 gv = (GV*)entry->hent_val;
2590 if (SvTYPE(sv) >= SVt_PV) {
2593 if (SvPVX(sv) != Nullch)
2602 environ[0] = Nullch;
2610 sv_2cv(sv, st, gvp, lref)
2620 return *gvp = Nullgv, Nullcv;
2621 switch (SvTYPE(sv)) {
2625 if (SvTYPE(cv) != SVt_PVCV)
2626 croak("Not a subroutine reference");
2649 gv = gv_fetchpv(SvPV(sv, na), lref);
2655 if (lref && !GvCV(gv)) {
2657 gv_efullname(sv, gv);
2658 newSUB(savestack_ix,
2659 newSVOP(OP_CONST, 0, sv),
2677 if ((Xpv = (XPV*)SvANY(sv)) &&
2678 (*Xpv->xpv_pv > '0' ||
2680 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
2687 return SvIVX(sv) != 0;
2690 return SvNVX(sv) != 0.0;
2692 return sv_2bool(sv);
2705 return (double)SvIVX(Sv);
2718 return sv_2pv(sv, lp);
2733 return strEQ(HvNAME(SvSTASH(sv)), name);
2737 sv_setptrobj(rv, ptr, name)
2752 sv_setnv(sv, (double)(unsigned long)ptr);
2753 sv_upgrade(rv, SVt_RV);
2754 SvRV(rv) = SvREFCNT_inc(sv);
2758 stash = fetch_stash(newSVpv(name,0), TRUE);
2760 SvUPGRADE(sv, SVt_PVMG);
2761 SvSTASH(sv) = (HV*)SvREFCNT_inc(stash);
2770 SvREFCNT_dec(SvRV(sv));
2787 fprintf(stderr, "SV = 0\n");
2791 flags = SvFLAGS(sv);
2794 sprintf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
2795 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
2797 if (flags & SVs_PADBUSY) strcat(d, "PADBUSY,");
2798 if (flags & SVs_PADTMP) strcat(d, "PADTMP,");
2799 if (flags & SVs_PADMY) strcat(d, "PADMY,");
2800 if (flags & SVs_TEMP) strcat(d, "TEMP,");
2801 if (flags & SVs_OBJECT) strcat(d, "OBJECT,");
2802 if (flags & SVs_GMG) strcat(d, "GMG,");
2803 if (flags & SVs_SMG) strcat(d, "SMG,");
2804 if (flags & SVs_RMG) strcat(d, "RMG,");
2807 if (flags & SVf_IOK) strcat(d, "IOK,");
2808 if (flags & SVf_NOK) strcat(d, "NOK,");
2809 if (flags & SVf_POK) strcat(d, "POK,");
2810 if (flags & SVf_ROK) strcat(d, "ROK,");
2811 if (flags & SVf_OK) strcat(d, "OK,");
2812 if (flags & SVf_OOK) strcat(d, "OOK,");
2813 if (flags & SVf_READONLY) strcat(d, "READONLY,");
2816 if (flags & SVp_IOK) strcat(d, "pIOK,");
2817 if (flags & SVp_NOK) strcat(d, "pNOK,");
2818 if (flags & SVp_POK) strcat(d, "pPOK,");
2819 if (flags & SVp_SCREAM) strcat(d, "SCREAM,");
2826 fprintf(stderr, "SV = ");
2829 fprintf(stderr,"NULL%s\n", tmpbuf);
2832 fprintf(stderr,"IV%s\n", tmpbuf);
2835 fprintf(stderr,"NV%s\n", tmpbuf);
2838 fprintf(stderr,"RV%s\n", tmpbuf);
2841 fprintf(stderr,"PV%s\n", tmpbuf);
2844 fprintf(stderr,"PVIV%s\n", tmpbuf);
2847 fprintf(stderr,"PVNV%s\n", tmpbuf);
2850 fprintf(stderr,"PVBM%s\n", tmpbuf);
2853 fprintf(stderr,"PVMG%s\n", tmpbuf);
2856 fprintf(stderr,"PVLV%s\n", tmpbuf);
2859 fprintf(stderr,"PVAV%s\n", tmpbuf);
2862 fprintf(stderr,"PVHV%s\n", tmpbuf);
2865 fprintf(stderr,"PVCV%s\n", tmpbuf);
2868 fprintf(stderr,"PVGV%s\n", tmpbuf);
2871 fprintf(stderr,"PVFM%s\n", tmpbuf);
2874 fprintf(stderr,"PVIO%s\n", tmpbuf);
2877 fprintf(stderr,"UNKNOWN%s\n", tmpbuf);
2880 if (type >= SVt_PVIV || type == SVt_IV)
2881 fprintf(stderr, " IV = %ld\n", (long)SvIVX(sv));
2882 if (type >= SVt_PVNV || type == SVt_NV)
2883 fprintf(stderr, " NV = %.20g\n", SvNVX(sv));
2885 fprintf(stderr, " RV = 0x%lx\n", SvRV(sv));
2891 if (type <= SVt_PVLV) {
2893 fprintf(stderr, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
2894 SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
2896 fprintf(stderr, " PV = 0\n");
2898 if (type >= SVt_PVMG) {
2900 fprintf(stderr, " MAGIC = 0x%lx\n", SvMAGIC(sv));
2903 fprintf(stderr, " STASH = %s\n", HvNAME(SvSTASH(sv)));
2907 fprintf(stderr, " TYPE = %c\n", LvTYPE(sv));
2908 fprintf(stderr, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
2909 fprintf(stderr, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
2910 fprintf(stderr, " TARG = 0x%lx\n", LvTARG(sv));
2911 sv_dump(LvTARG(sv));
2914 fprintf(stderr, " ARRAY = 0x%lx\n", AvARRAY(sv));
2915 fprintf(stderr, " ALLOC = 0x%lx\n", AvALLOC(sv));
2916 fprintf(stderr, " FILL = %ld\n", (long)AvFILL(sv));
2917 fprintf(stderr, " MAX = %ld\n", (long)AvMAX(sv));
2918 fprintf(stderr, " ARYLEN = 0x%lx\n", AvARYLEN(sv));
2920 fprintf(stderr, " FLAGS = (REAL)\n");
2922 fprintf(stderr, " FLAGS = ()\n");
2925 fprintf(stderr, " ARRAY = 0x%lx\n", HvARRAY(sv));
2926 fprintf(stderr, " KEYS = %ld\n", (long)HvKEYS(sv));
2927 fprintf(stderr, " FILL = %ld\n", (long)HvFILL(sv));
2928 fprintf(stderr, " MAX = %ld\n", (long)HvMAX(sv));
2929 fprintf(stderr, " RITER = %ld\n", (long)HvRITER(sv));
2930 fprintf(stderr, " EITER = 0x%lx\n", HvEITER(sv));
2932 fprintf(stderr, " PMROOT = 0x%lx\n", HvPMROOT(sv));
2934 fprintf(stderr, " NAME = \"%s\"\n", HvNAME(sv));
2938 fprintf(stderr, " STASH = 0x%lx\n", CvSTASH(sv));
2939 fprintf(stderr, " START = 0x%lx\n", CvSTART(sv));
2940 fprintf(stderr, " ROOT = 0x%lx\n", CvROOT(sv));
2941 fprintf(stderr, " USERSUB = 0x%lx\n", CvUSERSUB(sv));
2942 fprintf(stderr, " USERINDEX = %ld\n", (long)CvUSERINDEX(sv));
2943 fprintf(stderr, " FILEGV = 0x%lx\n", CvFILEGV(sv));
2944 fprintf(stderr, " DEPTH = %ld\n", (long)CvDEPTH(sv));
2945 fprintf(stderr, " PADLIST = 0x%lx\n", CvPADLIST(sv));
2946 fprintf(stderr, " DELETED = %ld\n", (long)CvDELETED(sv));
2947 if (type == SVt_PVFM)
2948 fprintf(stderr, " LINES = %ld\n", (long)FmLINES(sv));
2951 fprintf(stderr, " NAME = %s\n", GvNAME(sv));
2952 fprintf(stderr, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
2953 fprintf(stderr, " STASH = 0x%lx\n", GvSTASH(sv));
2954 fprintf(stderr, " GP = 0x%lx\n", GvGP(sv));
2955 fprintf(stderr, " SV = 0x%lx\n", GvSV(sv));
2956 fprintf(stderr, " REFCNT = %ld\n", (long)GvREFCNT(sv));
2957 fprintf(stderr, " IO = 0x%lx\n", GvIO(sv));
2958 fprintf(stderr, " FORM = 0x%lx\n", GvFORM(sv));
2959 fprintf(stderr, " AV = 0x%lx\n", GvAV(sv));
2960 fprintf(stderr, " HV = 0x%lx\n", GvHV(sv));
2961 fprintf(stderr, " CV = 0x%lx\n", GvCV(sv));
2962 fprintf(stderr, " CVGEN = 0x%lx\n", GvCVGEN(sv));
2963 fprintf(stderr, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
2964 fprintf(stderr, " LINE = %ld\n", (long)GvLINE(sv));
2965 fprintf(stderr, " FLAGS = 0x%x\n", (int)GvFLAGS(sv));
2966 fprintf(stderr, " STASH = 0x%lx\n", GvSTASH(sv));
2967 fprintf(stderr, " EGV = 0x%lx\n", GvEGV(sv));
2970 fprintf(stderr, " IFP = 0x%lx\n", IoIFP(sv));
2971 fprintf(stderr, " OFP = 0x%lx\n", IoOFP(sv));
2972 fprintf(stderr, " DIRP = 0x%lx\n", IoDIRP(sv));
2973 fprintf(stderr, " LINES = %ld\n", (long)IoLINES(sv));
2974 fprintf(stderr, " PAGE = %ld\n", (long)IoPAGE(sv));
2975 fprintf(stderr, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
2976 fprintf(stderr, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
2977 fprintf(stderr, " TOP_NAME = %s\n", IoTOP_NAME(sv));
2978 fprintf(stderr, " TOP_GV = 0x%lx\n", IoTOP_GV(sv));
2979 fprintf(stderr, " FMT_NAME = %s\n", IoFMT_NAME(sv));
2980 fprintf(stderr, " FMT_GV = 0x%lx\n", IoFMT_GV(sv));
2981 fprintf(stderr, " BOTTOM_NAME = %s\n", IoBOTTOM_NAME(sv));
2982 fprintf(stderr, " BOTTOM_GV = 0x%lx\n", IoBOTTOM_GV(sv));
2983 fprintf(stderr, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
2984 fprintf(stderr, " TYPE = %c\n", IoTYPE(sv));
2985 fprintf(stderr, " FLAGS = 0x%lx\n", IoFLAGS(sv));