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a0d0e21e 1/* op.h
79072805 2 *
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3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, by Larry Wall and others
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5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
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9 */
10
11/*
12 * The fields of BASEOP are:
13 * op_next Pointer to next ppcode to execute after this one.
14 * (Top level pre-grafted op points to first op,
15 * but this is replaced when op is grafted in, when
16 * this op will point to the real next op, and the new
17 * parent takes over role of remembering starting op.)
18 * op_ppaddr Pointer to current ppcode's function.
19 * op_type The type of the operation.
20 * op_flags Flags common to all operations. See OPf_* below.
21 * op_private Flags peculiar to a particular operation (BUT,
22 * by default, set to the number of children until
23 * the operation is privatized by a check routine,
24 * which may or may not check number of children).
25 */
26
4633a7c4 27#ifdef DEBUGGING_OPS
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28#define OPCODE opcode
29#else
30#define OPCODE U16
31#endif
32
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33#ifdef BASEOP_DEFINITION
34#define BASEOP BASEOP_DEFINITION
35#else
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36#define BASEOP \
37 OP* op_next; \
38 OP* op_sibling; \
4f63d024 39 OP* (CPERLscope(*op_ppaddr))(pTHX); \
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40 PADOFFSET op_targ; \
41 OPCODE op_type; \
42 U16 op_seq; \
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43 U8 op_flags; \
44 U8 op_private;
0f4eea8f 45#endif
79072805 46
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47#define OP_GIMME(op,dfl) \
48 (((op)->op_flags & OPf_WANT) == OPf_WANT_VOID ? G_VOID : \
49 ((op)->op_flags & OPf_WANT) == OPf_WANT_SCALAR ? G_SCALAR : \
50 ((op)->op_flags & OPf_WANT) == OPf_WANT_LIST ? G_ARRAY : \
51 dfl)
52
954c1994 53/*
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54=head1 "Gimme" Values
55
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56=for apidoc Amn|U32|GIMME_V
57The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
91e74348 58C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
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59respectively.
60
61=for apidoc Amn|U32|GIMME
62A backward-compatible version of C<GIMME_V> which can only return
63C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
64Deprecated. Use C<GIMME_V> instead.
65
66=cut
67*/
68
533c011a 69#define GIMME_V OP_GIMME(PL_op, block_gimme())
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70
71/* Public flags */
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72
73#define OPf_WANT 3 /* Mask for "want" bits: */
74#define OPf_WANT_VOID 1 /* Want nothing */
75#define OPf_WANT_SCALAR 2 /* Want single value */
76#define OPf_WANT_LIST 3 /* Want list of any length */
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77#define OPf_KIDS 4 /* There is a firstborn child. */
78#define OPf_PARENS 8 /* This operator was parenthesized. */
463ee0b2 79 /* (Or block needs explicit scope entry.) */
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80#define OPf_REF 16 /* Certified reference. */
81 /* (Return container, not containee). */
82#define OPf_MOD 32 /* Will modify (lvalue). */
83#define OPf_STACKED 64 /* Some arg is arriving on the stack. */
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84#define OPf_SPECIAL 128 /* Do something weird for this op: */
85 /* On local LVAL, don't init local value. */
86 /* On OP_SORT, subroutine is inlined. */
87 /* On OP_NOT, inversion was implicit. */
a0d0e21e 88 /* On OP_LEAVE, don't restore curpm. */
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89 /* On truncate, we truncate filehandle */
90 /* On control verbs, we saw no label */
91 /* On flipflop, we saw ... instead of .. */
92 /* On UNOPs, saw bare parens, e.g. eof(). */
a0d0e21e 93 /* On OP_ENTERSUB || OP_NULL, saw a "do". */
afebc493 94 /* On OP_EXISTS, treat av as av, not avhv. */
f2ec2afd 95 /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */
54b9620d 96 /* On OP_ENTERITER, loop var is per-thread */
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97 /* On pushre, re is /\s+/ imp. by split " " */
98 /* On regcomp, "use re 'eval'" was in scope */
7c6fadd6 99 /* On OP_READLINE, was <$filehandle> */
4e3399f9 100 /* On RV2[SG]V, don't create GV--in defined()*/
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101 /* On OP_DBSTATE, indicates breakpoint
102 * (runtime property) */
79072805 103
54310121 104/* old names; don't use in new code, but don't break them, either */
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105#define OPf_LIST OPf_WANT_LIST
106#define OPf_KNOW OPf_WANT
954c1994 107
54310121 108#define GIMME \
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109 (PL_op->op_flags & OPf_WANT \
110 ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \
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111 ? G_ARRAY \
112 : G_SCALAR) \
113 : dowantarray())
54310121 114
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115/* NOTE: OP_NEXTSTATE, OP_DBSTATE, and OP_SETSTATE (i.e. COPs) carry lower
116 * bits of PL_hints in op_private */
117
a0d0e21e 118/* Private for lvalues */
cd06dffe 119#define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */
a0d0e21e 120
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121/* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
122#define OPpREFCOUNTED 64 /* op_targ carries a refcount */
123
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124/* Private for OP_AASSIGN */
125#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
126
127/* Private for OP_SASSIGN */
128#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
79072805 129
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130/* Private for OP_MATCH and OP_SUBST{,CONST} */
131#define OPpRUNTIME 64 /* Pattern coming in on the stack */
132
79072805 133/* Private for OP_TRANS */
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134#define OPpTRANS_FROM_UTF 1
135#define OPpTRANS_TO_UTF 2
383e7cdd 136#define OPpTRANS_IDENTICAL 4 /* right side is same as left */
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137#define OPpTRANS_SQUASH 8
138#define OPpTRANS_DELETE 16
139#define OPpTRANS_COMPLEMENT 32
140#define OPpTRANS_GROWS 64
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141
142/* Private for OP_REPEAT */
a0d0e21e 143#define OPpREPEAT_DOLIST 64 /* List replication. */
79072805 144
d3011074 145/* Private for OP_RV2?V, OP_?ELEM */
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PP
146#define OPpDEREF (32|64) /* Want ref to something: */
147#define OPpDEREF_AV 32 /* Want ref to AV. */
148#define OPpDEREF_HV 64 /* Want ref to HV. */
149#define OPpDEREF_SV (32|64) /* Want ref to SV. */
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150 /* OP_ENTERSUB only */
151#define OPpENTERSUB_DB 16 /* Debug subroutine. */
d3011074 152#define OPpENTERSUB_HASTARG 32 /* Called from OP tree. */
95f0a2f1 153#define OPpENTERSUB_NOMOD 64 /* Immune to mod() for :attrlist. */
7a52d87a 154 /* OP_RV2CV only */
68dc0745 155#define OPpENTERSUB_AMPER 8 /* Used & form to call. */
9675f7ac 156#define OPpENTERSUB_NOPAREN 128 /* bare sub call (without parens) */
cd06dffe 157#define OPpENTERSUB_INARGS 4 /* Lval used as arg to a sub. */
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158 /* OP_GV only */
159#define OPpEARLY_CV 32 /* foo() called before sub foo was parsed */
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160 /* OP_?ELEM only */
161#define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */
241416b8 162 /* OP_RV2?V, OP_GVSV, OP_ENTERITER only */
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163#define OPpOUR_INTRO 16 /* Variable was in an our() */
164 /* OP_RV2[AH]V, OP_PAD[AH]V, OP_[AH]ELEM */
165#define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
192587c2 166 /* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
79072805 167
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168/* Private for OPs with TARGLEX */
169 /* (lower bits may carry MAXARG) */
170#define OPpTARGET_MY 16 /* Target is PADMY. */
171
79072805 172/* Private for OP_CONST */
7a52d87a 173#define OPpCONST_STRICT 8 /* bearword subject to strict 'subs' */
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174#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
175#define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */
a0d0e21e 176#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
599cee73 177#define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */
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178
179/* Private for OP_FLIP/FLOP */
a0d0e21e 180#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
79072805 181
ed6116ce 182/* Private for OP_LIST */
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183#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
184
5f05dabc 185/* Private for OP_DELETE */
54310121 186#define OPpSLICE 64 /* Operating on a list of keys */
5f05dabc 187
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188/* Private for OP_EXISTS */
189#define OPpEXISTS_SUB 64 /* Checking for &sub, not {} or []. */
190
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191/* Private for OP_SORT */
192#define OPpSORT_NUMERIC 1 /* Optimized away { $a <=> $b } */
193#define OPpSORT_INTEGER 2 /* Ditto while under "use integer" */
194#define OPpSORT_REVERSE 4 /* Descending sort */
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195/* Private for OP_THREADSV */
196#define OPpDONE_SVREF 64 /* Been through newSVREF once */
554b3eca 197
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198/* Private for OP_OPEN and OP_BACKTICK */
199#define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */
200#define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */
201#define OPpOPEN_OUT_RAW 64 /* binmode(F,":raw") on output fh */
202#define OPpOPEN_OUT_CRLF 128 /* binmode(F,":crlf") on output fh */
203
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204/* Private for OP_EXIT, HUSH also for OP_DIE */
205#define OPpHUSH_VMSISH 64 /* hush DCL exit msg vmsish mode*/
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206#define OPpEXIT_VMSISH 128 /* exit(0) vs. exit(1) vmsish mode*/
207
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208/* Private of OP_FTXXX */
209#define OPpFT_ACCESS 2 /* use filetest 'access' */
210#define OP_IS_FILETEST_ACCESS(op) \
211 (((op)->op_type) == OP_FTRREAD || \
212 ((op)->op_type) == OP_FTRWRITE || \
213 ((op)->op_type) == OP_FTREXEC || \
214 ((op)->op_type) == OP_FTEREAD || \
215 ((op)->op_type) == OP_FTEWRITE || \
216 ((op)->op_type) == OP_FTEEXEC)
217
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218struct op {
219 BASEOP
220};
221
222struct unop {
223 BASEOP
224 OP * op_first;
225};
226
227struct binop {
228 BASEOP
229 OP * op_first;
230 OP * op_last;
231};
232
233struct logop {
234 BASEOP
235 OP * op_first;
236 OP * op_other;
237};
238
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239struct listop {
240 BASEOP
241 OP * op_first;
242 OP * op_last;
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243};
244
245struct pmop {
246 BASEOP
247 OP * op_first;
248 OP * op_last;
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249 OP * op_pmreplroot;
250 OP * op_pmreplstart;
251 PMOP * op_pmnext; /* list of all scanpats */
1fcf4c12 252#ifdef USE_ITHREADS
fd1bc7eb 253 IV op_pmoffset;
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254#else
255 REGEXP * op_pmregexp; /* compiled expression */
256#endif
699a3330 257 U32 op_pmflags;
e2509266 258 U32 op_pmpermflags;
48c036b1 259 U8 op_pmdynflags;
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260#ifdef USE_ITHREADS
261 char * op_pmstashpv;
262#else
263 HV * op_pmstash;
264#endif
79072805 265};
a0d0e21e 266
1fcf4c12 267#ifdef USE_ITHREADS
ba89bb6e 268#define PM_GETRE(o) (INT2PTR(REGEXP*,SvIVX(PL_regex_pad[(o)->op_pmoffset])))
dd7d6c2b 269#define PM_SETRE(o,r) STMT_START { SV* sv = PL_regex_pad[(o)->op_pmoffset]; sv_setiv(sv, PTR2IV(r)); } STMT_END
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270#define PM_GETRE_SAFE(o) (PL_regex_pad ? PM_GETRE(o) : (REGEXP*)0)
271#define PM_SETRE_SAFE(o,r) if (PL_regex_pad) PM_SETRE(o,r)
1fcf4c12 272#else
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273#define PM_GETRE(o) ((o)->op_pmregexp)
274#define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
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275#define PM_GETRE_SAFE PM_GETRE
276#define PM_SETRE_SAFE PM_SETRE
1fcf4c12 277#endif
4825b64b 278
48c036b1 279#define PMdf_USED 0x01 /* pm has been used once already */
b3eb6a9b 280#define PMdf_TAINTED 0x02 /* pm compiled from tainted pattern */
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281#define PMdf_UTF8 0x04 /* pm compiled from utf8 data */
282#define PMdf_DYN_UTF8 0x08
283
284#define PMdf_CMP_UTF8 (PMdf_UTF8|PMdf_DYN_UTF8)
48c036b1 285
b3eb6a9b 286#define PMf_RETAINT 0x0001 /* taint $1 etc. if target tainted */
a0d0e21e 287#define PMf_ONCE 0x0002 /* use pattern only once per reset */
699a3330 288#define PMf_UNUSED 0x0004 /* free for use */
ce862d02 289#define PMf_MAYBE_CONST 0x0008 /* replacement contains variables */
a0d0e21e 290#define PMf_SKIPWHITE 0x0010 /* skip leading whitespace for split */
8782bef2 291#define PMf_WHITE 0x0020 /* pattern is \s+ */
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292#define PMf_CONST 0x0040 /* subst replacement is constant */
293#define PMf_KEEP 0x0080 /* keep 1st runtime pattern forever */
294#define PMf_GLOBAL 0x0100 /* pattern had a g modifier */
c90c0ff4 295#define PMf_CONTINUE 0x0200 /* don't reset pos() if //g fails */
a0d0e21e 296#define PMf_EVAL 0x0400 /* evaluating replacement as expr */
8782bef2 297#define PMf_LOCALE 0x0800 /* use locale for character types */
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298#define PMf_MULTILINE 0x1000 /* assume multiple lines */
299#define PMf_SINGLELINE 0x2000 /* assume single line */
8782bef2 300#define PMf_FOLD 0x4000 /* case insensitivity */
a0d0e21e 301#define PMf_EXTENDED 0x8000 /* chuck embedded whitespace */
79072805 302
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303/* mask of bits stored in regexp->reganch */
304#define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED)
305
cb55de95 306#ifdef USE_ITHREADS
05ec9bb3 307
cb55de95 308# define PmopSTASHPV(o) ((o)->op_pmstashpv)
05ec9bb3 309# define PmopSTASHPV_set(o,pv) (PmopSTASHPV(o) = savesharedpv(pv))
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310# define PmopSTASH(o) (PmopSTASHPV(o) \
311 ? gv_stashpv(PmopSTASHPV(o),GV_ADD) : Nullhv)
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312# define PmopSTASH_set(o,hv) PmopSTASHPV_set(o, ((hv) ? HvNAME(hv) : Nullch))
313# define PmopSTASH_free(o) PerlMemShared_free(PmopSTASHPV(o))
314
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JH
315#else
316# define PmopSTASH(o) ((o)->op_pmstash)
317# define PmopSTASH_set(o,hv) ((o)->op_pmstash = (hv))
318# define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME(PmopSTASH(o)) : Nullch)
319 /* op_pmstash is not refcounted */
320# define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
05ec9bb3 321# define PmopSTASH_free(o)
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322#endif
323
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324struct svop {
325 BASEOP
326 SV * op_sv;
327};
328
7934575e 329struct padop {
79072805 330 BASEOP
7934575e 331 PADOFFSET op_padix;
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332};
333
334struct pvop {
335 BASEOP
336 char * op_pv;
337};
338
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339struct loop {
340 BASEOP
341 OP * op_first;
342 OP * op_last;
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343 OP * op_redoop;
344 OP * op_nextop;
345 OP * op_lastop;
346};
347
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348#define cUNOPx(o) ((UNOP*)o)
349#define cBINOPx(o) ((BINOP*)o)
350#define cLISTOPx(o) ((LISTOP*)o)
351#define cLOGOPx(o) ((LOGOP*)o)
352#define cPMOPx(o) ((PMOP*)o)
353#define cSVOPx(o) ((SVOP*)o)
354#define cPADOPx(o) ((PADOP*)o)
355#define cPVOPx(o) ((PVOP*)o)
356#define cCOPx(o) ((COP*)o)
357#define cLOOPx(o) ((LOOP*)o)
358
359#define cUNOP cUNOPx(PL_op)
360#define cBINOP cBINOPx(PL_op)
361#define cLISTOP cLISTOPx(PL_op)
362#define cLOGOP cLOGOPx(PL_op)
363#define cPMOP cPMOPx(PL_op)
364#define cSVOP cSVOPx(PL_op)
365#define cPADOP cPADOPx(PL_op)
366#define cPVOP cPVOPx(PL_op)
367#define cCOP cCOPx(PL_op)
368#define cLOOP cLOOPx(PL_op)
369
370#define cUNOPo cUNOPx(o)
371#define cBINOPo cBINOPx(o)
372#define cLISTOPo cLISTOPx(o)
373#define cLOGOPo cLOGOPx(o)
374#define cPMOPo cPMOPx(o)
375#define cSVOPo cSVOPx(o)
376#define cPADOPo cPADOPx(o)
377#define cPVOPo cPVOPx(o)
378#define cCOPo cCOPx(o)
379#define cLOOPo cLOOPx(o)
380
381#define kUNOP cUNOPx(kid)
382#define kBINOP cBINOPx(kid)
383#define kLISTOP cLISTOPx(kid)
384#define kLOGOP cLOGOPx(kid)
385#define kPMOP cPMOPx(kid)
386#define kSVOP cSVOPx(kid)
387#define kPADOP cPADOPx(kid)
388#define kPVOP cPVOPx(kid)
389#define kCOP cCOPx(kid)
390#define kLOOP cLOOPx(kid)
391
392
393#ifdef USE_ITHREADS
dd2155a4 394# define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
743e66e6 395# define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && GvIN_PAD(v))
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GS
396# define IS_PADCONST(v) (v && SvREADONLY(v))
397# define cSVOPx_sv(v) (cSVOPx(v)->op_sv \
dd2155a4 398 ? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
638eceb6 399# define cSVOPx_svp(v) (cSVOPx(v)->op_sv \
dd2155a4 400 ? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ))
350de78d 401#else
638eceb6 402# define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv)
743e66e6 403# define IS_PADGV(v) FALSE
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GS
404# define IS_PADCONST(v) FALSE
405# define cSVOPx_sv(v) (cSVOPx(v)->op_sv)
638eceb6 406# define cSVOPx_svp(v) (&cSVOPx(v)->op_sv)
350de78d 407#endif
79072805 408
638eceb6
GS
409#define cGVOP_gv cGVOPx_gv(PL_op)
410#define cGVOPo_gv cGVOPx_gv(o)
411#define kGVOP_gv cGVOPx_gv(kid)
412#define cSVOP_sv cSVOPx_sv(PL_op)
413#define cSVOPo_sv cSVOPx_sv(o)
414#define kSVOP_sv cSVOPx_sv(kid)
7766f137 415
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416#define Nullop Null(OP*)
417
91135acb 418/* Lowest byte-and-a-bit of PL_opargs */
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LW
419#define OA_MARK 1
420#define OA_FOLDCONST 2
421#define OA_RETSCALAR 4
422#define OA_TARGET 8
423#define OA_RETINTEGER 16
424#define OA_OTHERINT 32
425#define OA_DANGEROUS 64
426#define OA_DEFGV 128
b162f9ea 427#define OA_TARGLEX 256
a0d0e21e 428
db173bac 429/* The next 4 bits encode op class information */
b162f9ea
IZ
430#define OCSHIFT 9
431
432#define OA_CLASS_MASK (15 << OCSHIFT)
433
434#define OA_BASEOP (0 << OCSHIFT)
435#define OA_UNOP (1 << OCSHIFT)
436#define OA_BINOP (2 << OCSHIFT)
437#define OA_LOGOP (3 << OCSHIFT)
1a67a97c
SM
438#define OA_LISTOP (4 << OCSHIFT)
439#define OA_PMOP (5 << OCSHIFT)
440#define OA_SVOP (6 << OCSHIFT)
7934575e 441#define OA_PADOP (7 << OCSHIFT)
1a67a97c
SM
442#define OA_PVOP_OR_SVOP (8 << OCSHIFT)
443#define OA_LOOP (9 << OCSHIFT)
444#define OA_COP (10 << OCSHIFT)
445#define OA_BASEOP_OR_UNOP (11 << OCSHIFT)
446#define OA_FILESTATOP (12 << OCSHIFT)
447#define OA_LOOPEXOP (13 << OCSHIFT)
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IZ
448
449#define OASHIFT 13
a0d0e21e 450
4369b173 451/* Remaining nybbles of PL_opargs */
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LW
452#define OA_SCALAR 1
453#define OA_LIST 2
454#define OA_AVREF 3
455#define OA_HVREF 4
456#define OA_CVREF 5
457#define OA_FILEREF 6
458#define OA_SCALARREF 7
459#define OA_OPTIONAL 8
460
534825c4
GS
461#ifdef USE_ITHREADS
462# define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex)
463# define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex)
464# define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex)
465# define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex)
534825c4
GS
466#else
467# define OP_REFCNT_INIT NOOP
468# define OP_REFCNT_LOCK NOOP
469# define OP_REFCNT_UNLOCK NOOP
470# define OP_REFCNT_TERM NOOP
534825c4 471#endif
e4783991 472
282f25c9
JH
473#define OpREFCNT_set(o,n) ((o)->op_targ = (n))
474#define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : Nullop)
475#define OpREFCNT_dec(o) (--(o)->op_targ)
476
e4783991
GS
477/* flags used by Perl_load_module() */
478#define PERL_LOADMOD_DENY 0x1
479#define PERL_LOADMOD_NOIMPORT 0x2
480#define PERL_LOADMOD_IMPORT_OPS 0x4
e5dd39fc
AB
481
482#ifdef USE_REENTRANT_API
10bc17b6 483#include "reentr.h"
e5dd39fc
AB
484#endif
485
c7e45529
AE
486#if defined(PL_OP_SLAB_ALLOC)
487#define NewOp(m,var,c,type) \
113b9ccf 488 (var = (type *) Perl_Slab_Alloc(aTHX_ m,c*sizeof(type)))
c7e45529 489#define NewOpSz(m,var,size) \
113b9ccf 490 (var = (OP *) Perl_Slab_Alloc(aTHX_ m,size))
c7e45529
AE
491#define FreeOp(p) Perl_Slab_Free(aTHX_ p)
492#else
493#define NewOp(m, var, c, type) Newz(m, var, c, type)
113b9ccf
JH
494#define NewOpSz(m, var, size) \
495 (var = (OP*)safemalloc(size), memzero(var, size))
c7e45529
AE
496#define FreeOp(p) Safefree(p)
497#endif