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/cvs/cvsroot/staticperl/perl/op.h
Revision: 1.1
Committed: Thu Jun 30 14:26:42 2005 UTC (21 years, 3 months ago) by root
Content type: text/plain
Branch: MAIN
CVS Tags: PERL-5-8-7, HEAD
Branch point for: PERL
Log Message:
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File Contents

# User Rev Content
1 root 1.1 /* op.h
2     *
3     * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4     * 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others
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     *
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    
27     #ifdef DEBUGGING_OPS
28     #define OPCODE opcode
29     #else
30     #define OPCODE U16
31     #endif
32    
33     #ifdef BASEOP_DEFINITION
34     #define BASEOP BASEOP_DEFINITION
35     #else
36     #define BASEOP \
37     OP* op_next; \
38     OP* op_sibling; \
39     OP* (CPERLscope(*op_ppaddr))(pTHX); \
40     PADOFFSET op_targ; \
41     OPCODE op_type; \
42     U16 op_seq; \
43     U8 op_flags; \
44     U8 op_private;
45     #endif
46    
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    
53     /*
54     =head1 "Gimme" Values
55    
56     =for apidoc Amn|U32|GIMME_V
57     The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
58     C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
59     respectively.
60    
61     =for apidoc Amn|U32|GIMME
62     A backward-compatible version of C<GIMME_V> which can only return
63     C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
64     Deprecated. Use C<GIMME_V> instead.
65    
66     =cut
67     */
68    
69     #define GIMME_V OP_GIMME(PL_op, block_gimme())
70    
71     /* Public flags */
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 */
77     #define OPf_KIDS 4 /* There is a firstborn child. */
78     #define OPf_PARENS 8 /* This operator was parenthesized. */
79     /* (Or block needs explicit scope entry.) */
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. */
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. */
88     /* On OP_LEAVE, don't restore curpm. */
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(). */
93     /* On OP_ENTERSUB || OP_NULL, saw a "do". */
94     /* On OP_EXISTS, treat av as av, not avhv. */
95     /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */
96     /* On OP_ENTERITER, loop var is per-thread */
97     /* On pushre, re is /\s+/ imp. by split " " */
98     /* On regcomp, "use re 'eval'" was in scope */
99     /* On OP_READLINE, was <$filehandle> */
100     /* On RV2[SG]V, don't create GV--in defined()*/
101     /* On OP_DBSTATE, indicates breakpoint
102     * (runtime property) */
103     /* On OP_AELEMFAST, indiciates pad var */
104    
105     /* old names; don't use in new code, but don't break them, either */
106     #define OPf_LIST OPf_WANT_LIST
107     #define OPf_KNOW OPf_WANT
108    
109     #define GIMME \
110     (PL_op->op_flags & OPf_WANT \
111     ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \
112     ? G_ARRAY \
113     : G_SCALAR) \
114     : dowantarray())
115    
116     /* NOTE: OP_NEXTSTATE, OP_DBSTATE, and OP_SETSTATE (i.e. COPs) carry lower
117     * bits of PL_hints in op_private */
118    
119     /* Private for lvalues */
120     #define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */
121    
122     /* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
123     #define OPpREFCOUNTED 64 /* op_targ carries a refcount */
124    
125     /* Private for OP_AASSIGN */
126     #define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
127     #define OPpASSIGN_HASH 32 /* Assigning to possible pseudohash. */
128    
129     /* Private for OP_SASSIGN */
130     #define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
131    
132     /* Private for OP_MATCH and OP_SUBST{,CONST} */
133     #define OPpRUNTIME 64 /* Pattern coming in on the stack */
134    
135     /* Private for OP_TRANS */
136     #define OPpTRANS_FROM_UTF 1
137     #define OPpTRANS_TO_UTF 2
138     #define OPpTRANS_IDENTICAL 4 /* right side is same as left */
139     #define OPpTRANS_SQUASH 8
140     #define OPpTRANS_DELETE 16
141     #define OPpTRANS_COMPLEMENT 32
142     #define OPpTRANS_GROWS 64
143    
144     /* Private for OP_REPEAT */
145     #define OPpREPEAT_DOLIST 64 /* List replication. */
146    
147     /* Private for OP_RV2GV, OP_RV2SV, OP_AELEM, OP_HELEM, OP_PADSV */
148     #define OPpDEREF (32|64) /* autovivify: Want ref to something: */
149     #define OPpDEREF_AV 32 /* Want ref to AV. */
150     #define OPpDEREF_HV 64 /* Want ref to HV. */
151     #define OPpDEREF_SV (32|64) /* Want ref to SV. */
152     /* OP_ENTERSUB only */
153     #define OPpENTERSUB_DB 16 /* Debug subroutine. */
154     #define OPpENTERSUB_HASTARG 32 /* Called from OP tree. */
155     #define OPpENTERSUB_NOMOD 64 /* Immune to mod() for :attrlist. */
156     /* OP_RV2CV only */
157     #define OPpENTERSUB_AMPER 8 /* Used & form to call. */
158     #define OPpENTERSUB_NOPAREN 128 /* bare sub call (without parens) */
159     #define OPpENTERSUB_INARGS 4 /* Lval used as arg to a sub. */
160     /* OP_GV only */
161     #define OPpEARLY_CV 32 /* foo() called before sub foo was parsed */
162     /* OP_?ELEM only */
163     #define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */
164     /* OP_RV2?V, OP_GVSV, OP_ENTERITER only */
165     #define OPpOUR_INTRO 16 /* Variable was in an our() */
166     /* OP_RV2[AH]V, OP_PAD[AH]V, OP_[AH]ELEM */
167     #define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
168     /* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
169    
170     /* Private for OPs with TARGLEX */
171     /* (lower bits may carry MAXARG) */
172     #define OPpTARGET_MY 16 /* Target is PADMY. */
173    
174     /* Private for OP_ENTERITER and OP_ITER */
175     #define OPpITER_REVERSED 4 /* for (reverse ...) */
176    
177     /* Private for OP_CONST */
178     #define OPpCONST_SHORTCIRCUIT 4 /* eg the constant 5 in (5 || foo) */
179     #define OPpCONST_STRICT 8 /* bearword subject to strict 'subs' */
180     #define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
181     #define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */
182     #define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
183     #define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */
184    
185     /* Private for OP_FLIP/FLOP */
186     #define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
187    
188     /* Private for OP_LIST */
189     #define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
190    
191     /* Private for OP_DELETE */
192     #define OPpSLICE 64 /* Operating on a list of keys */
193    
194     /* Private for OP_EXISTS */
195     #define OPpEXISTS_SUB 64 /* Checking for &sub, not {} or []. */
196    
197     /* Private for OP_SORT */
198     #define OPpSORT_NUMERIC 1 /* Optimized away { $a <=> $b } */
199     #define OPpSORT_INTEGER 2 /* Ditto while under "use integer" */
200     #define OPpSORT_REVERSE 4 /* Reversed sort */
201     #define OPpSORT_INPLACE 8 /* sort in-place; eg @a = sort @a */
202     #define OPpSORT_DESCEND 16 /* Descending sort */
203     /* Private for OP_THREADSV */
204     #define OPpDONE_SVREF 64 /* Been through newSVREF once */
205    
206     /* Private for OP_OPEN and OP_BACKTICK */
207     #define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */
208     #define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */
209     #define OPpOPEN_OUT_RAW 64 /* binmode(F,":raw") on output fh */
210     #define OPpOPEN_OUT_CRLF 128 /* binmode(F,":crlf") on output fh */
211    
212     /* Private for OP_EXIT, HUSH also for OP_DIE */
213     #define OPpHUSH_VMSISH 64 /* hush DCL exit msg vmsish mode*/
214     #define OPpEXIT_VMSISH 128 /* exit(0) vs. exit(1) vmsish mode*/
215    
216     /* Private of OP_FTXXX */
217     #define OPpFT_ACCESS 2 /* use filetest 'access' */
218     #define OP_IS_FILETEST_ACCESS(op) \
219     (((op)->op_type) == OP_FTRREAD || \
220     ((op)->op_type) == OP_FTRWRITE || \
221     ((op)->op_type) == OP_FTREXEC || \
222     ((op)->op_type) == OP_FTEREAD || \
223     ((op)->op_type) == OP_FTEWRITE || \
224     ((op)->op_type) == OP_FTEEXEC)
225    
226     struct op {
227     BASEOP
228     };
229    
230     struct unop {
231     BASEOP
232     OP * op_first;
233     };
234    
235     struct binop {
236     BASEOP
237     OP * op_first;
238     OP * op_last;
239     };
240    
241     struct logop {
242     BASEOP
243     OP * op_first;
244     OP * op_other;
245     };
246    
247     struct listop {
248     BASEOP
249     OP * op_first;
250     OP * op_last;
251     };
252    
253     struct pmop {
254     BASEOP
255     OP * op_first;
256     OP * op_last;
257     OP * op_pmreplroot; /* (type is really union {OP*,GV*,PADOFFSET}) */
258     OP * op_pmreplstart;
259     PMOP * op_pmnext; /* list of all scanpats */
260     #ifdef USE_ITHREADS
261     IV op_pmoffset;
262     #else
263     REGEXP * op_pmregexp; /* compiled expression */
264     #endif
265     U32 op_pmflags;
266     U32 op_pmpermflags;
267     U8 op_pmdynflags;
268     #ifdef USE_ITHREADS
269     char * op_pmstashpv;
270     #else
271     HV * op_pmstash;
272     #endif
273     };
274    
275     #ifdef USE_ITHREADS
276     #define PM_GETRE(o) (INT2PTR(REGEXP*,SvIVX(PL_regex_pad[(o)->op_pmoffset])))
277     #define PM_SETRE(o,r) STMT_START { SV* sv = PL_regex_pad[(o)->op_pmoffset]; sv_setiv(sv, PTR2IV(r)); } STMT_END
278     #define PM_GETRE_SAFE(o) (PL_regex_pad ? PM_GETRE(o) : (REGEXP*)0)
279     #define PM_SETRE_SAFE(o,r) if (PL_regex_pad) PM_SETRE(o,r)
280     #else
281     #define PM_GETRE(o) ((o)->op_pmregexp)
282     #define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
283     #define PM_GETRE_SAFE PM_GETRE
284     #define PM_SETRE_SAFE PM_SETRE
285     #endif
286    
287     #define PMdf_USED 0x01 /* pm has been used once already */
288     #define PMdf_TAINTED 0x02 /* pm compiled from tainted pattern */
289     #define PMdf_UTF8 0x04 /* pm compiled from utf8 data */
290     #define PMdf_DYN_UTF8 0x08
291    
292     #define PMdf_CMP_UTF8 (PMdf_UTF8|PMdf_DYN_UTF8)
293    
294     #define PMf_RETAINT 0x0001 /* taint $1 etc. if target tainted */
295     #define PMf_ONCE 0x0002 /* use pattern only once per reset */
296     #define PMf_UNUSED 0x0004 /* free for use */
297     #define PMf_MAYBE_CONST 0x0008 /* replacement contains variables */
298     #define PMf_SKIPWHITE 0x0010 /* skip leading whitespace for split */
299     #define PMf_WHITE 0x0020 /* pattern is \s+ */
300     #define PMf_CONST 0x0040 /* subst replacement is constant */
301     #define PMf_KEEP 0x0080 /* keep 1st runtime pattern forever */
302     #define PMf_GLOBAL 0x0100 /* pattern had a g modifier */
303     #define PMf_CONTINUE 0x0200 /* don't reset pos() if //g fails */
304     #define PMf_EVAL 0x0400 /* evaluating replacement as expr */
305     #define PMf_LOCALE 0x0800 /* use locale for character types */
306     #define PMf_MULTILINE 0x1000 /* assume multiple lines */
307     #define PMf_SINGLELINE 0x2000 /* assume single line */
308     #define PMf_FOLD 0x4000 /* case insensitivity */
309     #define PMf_EXTENDED 0x8000 /* chuck embedded whitespace */
310    
311     /* mask of bits stored in regexp->reganch */
312     #define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED)
313    
314     #ifdef USE_ITHREADS
315    
316     # define PmopSTASHPV(o) ((o)->op_pmstashpv)
317     # define PmopSTASHPV_set(o,pv) (PmopSTASHPV(o) = savesharedpv(pv))
318     # define PmopSTASH(o) (PmopSTASHPV(o) \
319     ? gv_stashpv(PmopSTASHPV(o),GV_ADD) : Nullhv)
320     # define PmopSTASH_set(o,hv) PmopSTASHPV_set(o, ((hv) ? HvNAME(hv) : Nullch))
321     # define PmopSTASH_free(o) PerlMemShared_free(PmopSTASHPV(o))
322    
323     #else
324     # define PmopSTASH(o) ((o)->op_pmstash)
325     # define PmopSTASH_set(o,hv) ((o)->op_pmstash = (hv))
326     # define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME(PmopSTASH(o)) : Nullch)
327     /* op_pmstash is not refcounted */
328     # define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
329     # define PmopSTASH_free(o)
330     #endif
331    
332     struct svop {
333     BASEOP
334     SV * op_sv;
335     };
336    
337     struct padop {
338     BASEOP
339     PADOFFSET op_padix;
340     };
341    
342     struct pvop {
343     BASEOP
344     char * op_pv;
345     };
346    
347     struct loop {
348     BASEOP
349     OP * op_first;
350     OP * op_last;
351     OP * op_redoop;
352     OP * op_nextop;
353     OP * op_lastop;
354     };
355    
356     #define cUNOPx(o) ((UNOP*)o)
357     #define cBINOPx(o) ((BINOP*)o)
358     #define cLISTOPx(o) ((LISTOP*)o)
359     #define cLOGOPx(o) ((LOGOP*)o)
360     #define cPMOPx(o) ((PMOP*)o)
361     #define cSVOPx(o) ((SVOP*)o)
362     #define cPADOPx(o) ((PADOP*)o)
363     #define cPVOPx(o) ((PVOP*)o)
364     #define cCOPx(o) ((COP*)o)
365     #define cLOOPx(o) ((LOOP*)o)
366    
367     #define cUNOP cUNOPx(PL_op)
368     #define cBINOP cBINOPx(PL_op)
369     #define cLISTOP cLISTOPx(PL_op)
370     #define cLOGOP cLOGOPx(PL_op)
371     #define cPMOP cPMOPx(PL_op)
372     #define cSVOP cSVOPx(PL_op)
373     #define cPADOP cPADOPx(PL_op)
374     #define cPVOP cPVOPx(PL_op)
375     #define cCOP cCOPx(PL_op)
376     #define cLOOP cLOOPx(PL_op)
377    
378     #define cUNOPo cUNOPx(o)
379     #define cBINOPo cBINOPx(o)
380     #define cLISTOPo cLISTOPx(o)
381     #define cLOGOPo cLOGOPx(o)
382     #define cPMOPo cPMOPx(o)
383     #define cSVOPo cSVOPx(o)
384     #define cPADOPo cPADOPx(o)
385     #define cPVOPo cPVOPx(o)
386     #define cCOPo cCOPx(o)
387     #define cLOOPo cLOOPx(o)
388    
389     #define kUNOP cUNOPx(kid)
390     #define kBINOP cBINOPx(kid)
391     #define kLISTOP cLISTOPx(kid)
392     #define kLOGOP cLOGOPx(kid)
393     #define kPMOP cPMOPx(kid)
394     #define kSVOP cSVOPx(kid)
395     #define kPADOP cPADOPx(kid)
396     #define kPVOP cPVOPx(kid)
397     #define kCOP cCOPx(kid)
398     #define kLOOP cLOOPx(kid)
399    
400    
401     #ifdef USE_ITHREADS
402     # define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
403     # define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && GvIN_PAD(v))
404     # define IS_PADCONST(v) (v && SvREADONLY(v))
405     # define cSVOPx_sv(v) (cSVOPx(v)->op_sv \
406     ? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
407     # define cSVOPx_svp(v) (cSVOPx(v)->op_sv \
408     ? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ))
409     #else
410     # define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv)
411     # define IS_PADGV(v) FALSE
412     # define IS_PADCONST(v) FALSE
413     # define cSVOPx_sv(v) (cSVOPx(v)->op_sv)
414     # define cSVOPx_svp(v) (&cSVOPx(v)->op_sv)
415     #endif
416    
417     #define cGVOP_gv cGVOPx_gv(PL_op)
418     #define cGVOPo_gv cGVOPx_gv(o)
419     #define kGVOP_gv cGVOPx_gv(kid)
420     #define cSVOP_sv cSVOPx_sv(PL_op)
421     #define cSVOPo_sv cSVOPx_sv(o)
422     #define kSVOP_sv cSVOPx_sv(kid)
423    
424     #define Nullop Null(OP*)
425    
426     /* Lowest byte-and-a-bit of PL_opargs */
427     #define OA_MARK 1
428     #define OA_FOLDCONST 2
429     #define OA_RETSCALAR 4
430     #define OA_TARGET 8
431     #define OA_RETINTEGER 16
432     #define OA_OTHERINT 32
433     #define OA_DANGEROUS 64
434     #define OA_DEFGV 128
435     #define OA_TARGLEX 256
436    
437     /* The next 4 bits encode op class information */
438     #define OCSHIFT 9
439    
440     #define OA_CLASS_MASK (15 << OCSHIFT)
441    
442     #define OA_BASEOP (0 << OCSHIFT)
443     #define OA_UNOP (1 << OCSHIFT)
444     #define OA_BINOP (2 << OCSHIFT)
445     #define OA_LOGOP (3 << OCSHIFT)
446     #define OA_LISTOP (4 << OCSHIFT)
447     #define OA_PMOP (5 << OCSHIFT)
448     #define OA_SVOP (6 << OCSHIFT)
449     #define OA_PADOP (7 << OCSHIFT)
450     #define OA_PVOP_OR_SVOP (8 << OCSHIFT)
451     #define OA_LOOP (9 << OCSHIFT)
452     #define OA_COP (10 << OCSHIFT)
453     #define OA_BASEOP_OR_UNOP (11 << OCSHIFT)
454     #define OA_FILESTATOP (12 << OCSHIFT)
455     #define OA_LOOPEXOP (13 << OCSHIFT)
456    
457     #define OASHIFT 13
458    
459     /* Remaining nybbles of PL_opargs */
460     #define OA_SCALAR 1
461     #define OA_LIST 2
462     #define OA_AVREF 3
463     #define OA_HVREF 4
464     #define OA_CVREF 5
465     #define OA_FILEREF 6
466     #define OA_SCALARREF 7
467     #define OA_OPTIONAL 8
468    
469     #ifdef USE_ITHREADS
470     # define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex)
471     # ifdef PERL_CORE
472     # define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex)
473     # define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex)
474     # else
475     # define OP_REFCNT_LOCK op_refcnt_lock()
476     # define OP_REFCNT_UNLOCK op_refcnt_unlock()
477     # endif
478     # define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex)
479     #else
480     # define OP_REFCNT_INIT NOOP
481     # define OP_REFCNT_LOCK NOOP
482     # define OP_REFCNT_UNLOCK NOOP
483     # define OP_REFCNT_TERM NOOP
484     #endif
485    
486     #define OpREFCNT_set(o,n) ((o)->op_targ = (n))
487     #define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : Nullop)
488     #define OpREFCNT_dec(o) (--(o)->op_targ)
489    
490     /* flags used by Perl_load_module() */
491     #define PERL_LOADMOD_DENY 0x1
492     #define PERL_LOADMOD_NOIMPORT 0x2
493     #define PERL_LOADMOD_IMPORT_OPS 0x4
494    
495     #ifdef USE_REENTRANT_API
496     #include "reentr.h"
497     #endif
498    
499     #if defined(PL_OP_SLAB_ALLOC)
500     #define NewOp(m,var,c,type) \
501     (var = (type *) Perl_Slab_Alloc(aTHX_ m,c*sizeof(type)))
502     #define NewOpSz(m,var,size) \
503     (var = (OP *) Perl_Slab_Alloc(aTHX_ m,size))
504     #define FreeOp(p) Perl_Slab_Free(aTHX_ p)
505     #else
506     #define NewOp(m, var, c, type) Newz(m, var, c, type)
507     #define NewOpSz(m, var, size) \
508     (var = (OP*)safemalloc(size), memzero(var, size))
509     #define FreeOp(p) Safefree(p)
510     #endif