/* sv.c
*
- * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, by Larry Wall and others
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall
+ * and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
- * "I wonder what the Entish is for 'yes' and 'no'," he thought.
+ */
+
+/*
+ * 'I wonder what the Entish is for "yes" and "no",' he thought.
+ * --Pippin
+ *
+ * [p.480 of _The Lord of the Rings_, III/iv: "Treebeard"]
+ */
+
+/*
*
*
* This file contains the code that creates, manipulates and destroys
=cut
-============================================================================ */
+ * ========================================================================= */
/*
* "A time to plant, and a time to uproot what was planted..."
}
}
+#ifdef PERL_MEM_LOG
+# define MEM_LOG_NEW_SV(sv, file, line, func) \
+ Perl_mem_log_new_sv(sv, file, line, func)
+# define MEM_LOG_DEL_SV(sv, file, line, func) \
+ Perl_mem_log_del_sv(sv, file, line, func)
+#else
+# define MEM_LOG_NEW_SV(sv, file, line, func) NOOP
+# define MEM_LOG_DEL_SV(sv, file, line, func) NOOP
+#endif
+
#ifdef DEBUG_LEAKING_SCALARS
# define FREE_SV_DEBUG_FILE(sv) Safefree((sv)->sv_debug_file)
+# define DEBUG_SV_SERIAL(sv) \
+ DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) del_SV\n", \
+ PTR2UV(sv), (long)(sv)->sv_debug_serial))
#else
# define FREE_SV_DEBUG_FILE(sv)
+# define DEBUG_SV_SERIAL(sv) NOOP
#endif
#ifdef PERL_POISON
# define SvARENA_CHAIN(sv) ((sv)->sv_u.svu_rv)
+# define SvARENA_CHAIN_SET(sv,val) (sv)->sv_u.svu_rv = MUTABLE_SV((val))
/* Whilst I'd love to do this, it seems that things like to check on
unreferenced scalars
# define POSION_SV_HEAD(sv) PoisonNew(sv, 1, struct STRUCT_SV)
PoisonNew(&SvREFCNT(sv), 1, U32)
#else
# define SvARENA_CHAIN(sv) SvANY(sv)
+# define SvARENA_CHAIN_SET(sv,val) SvANY(sv) = (void *)(val)
# define POSION_SV_HEAD(sv)
#endif
+/* Mark an SV head as unused, and add to free list.
+ *
+ * If SVf_BREAK is set, skip adding it to the free list, as this SV had
+ * its refcount artificially decremented during global destruction, so
+ * there may be dangling pointers to it. The last thing we want in that
+ * case is for it to be reused. */
+
#define plant_SV(p) \
STMT_START { \
+ const U32 old_flags = SvFLAGS(p); \
+ MEM_LOG_DEL_SV(p, __FILE__, __LINE__, FUNCTION__); \
+ DEBUG_SV_SERIAL(p); \
FREE_SV_DEBUG_FILE(p); \
POSION_SV_HEAD(p); \
- SvARENA_CHAIN(p) = (void *)PL_sv_root; \
SvFLAGS(p) = SVTYPEMASK; \
- PL_sv_root = (p); \
+ if (!(old_flags & SVf_BREAK)) { \
+ SvARENA_CHAIN_SET(p, PL_sv_root); \
+ PL_sv_root = (p); \
+ } \
--PL_sv_count; \
} STMT_END
#define uproot_SV(p) \
STMT_START { \
(p) = PL_sv_root; \
- PL_sv_root = (SV*)SvARENA_CHAIN(p); \
+ PL_sv_root = MUTABLE_SV(SvARENA_CHAIN(p)); \
++PL_sv_count; \
} STMT_END
#ifdef DEBUG_LEAKING_SCALARS
/* provide a real function for a debugger to play with */
STATIC SV*
-S_new_SV(pTHX)
+S_new_SV(pTHX_ const char *file, int line, const char *func)
{
SV* sv;
sv->sv_debug_inpad = 0;
sv->sv_debug_cloned = 0;
sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL;
-
+
+ sv->sv_debug_serial = PL_sv_serial++;
+
+ MEM_LOG_NEW_SV(sv, file, line, func);
+ DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) new_SV (from %s:%d [%s])\n",
+ PTR2UV(sv), (long)sv->sv_debug_serial, file, line, func));
+
return sv;
}
-# define new_SV(p) (p)=S_new_SV(aTHX)
+# define new_SV(p) (p)=S_new_SV(aTHX_ __FILE__, __LINE__, FUNCTION__)
#else
# define new_SV(p) \
SvANY(p) = 0; \
SvREFCNT(p) = 1; \
SvFLAGS(p) = 0; \
+ MEM_LOG_NEW_SV(p, __FILE__, __LINE__, FUNCTION__); \
} STMT_END
#endif
if (DEBUG_D_TEST) {
SV* sva;
bool ok = 0;
- for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
+ for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
const SV * const sv = sva + 1;
const SV * const svend = &sva[SvREFCNT(sva)];
if (p >= sv && p < svend) {
=cut
*/
-void
-Perl_sv_add_arena(pTHX_ char *const ptr, const U32 size, const U32 flags)
+static void
+S_sv_add_arena(pTHX_ char *const ptr, const U32 size, const U32 flags)
{
dVAR;
- SV* const sva = (SV*)ptr;
+ SV *const sva = MUTABLE_SV(ptr);
register SV* sv;
register SV* svend;
svend = &sva[SvREFCNT(sva) - 1];
sv = sva + 1;
while (sv < svend) {
- SvARENA_CHAIN(sv) = (void *)(SV*)(sv + 1);
+ SvARENA_CHAIN_SET(sv, (sv + 1));
#ifdef DEBUGGING
SvREFCNT(sv) = 0;
#endif
SvFLAGS(sv) = SVTYPEMASK;
sv++;
}
- SvARENA_CHAIN(sv) = 0;
+ SvARENA_CHAIN_SET(sv, 0);
#ifdef DEBUGGING
SvREFCNT(sv) = 0;
#endif
PERL_ARGS_ASSERT_VISIT;
- for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
+ for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
register const SV * const svend = &sva[SvREFCNT(sva)];
register SV* sv;
for (sv = sva + 1; sv < svend; ++sv) {
do_clean_all(pTHX_ SV *const sv)
{
dVAR;
- if (sv == (SV*) PL_fdpid || sv == (SV *)PL_strtab) {
+ if (sv == (const SV *) PL_fdpid || sv == (const SV *)PL_strtab) {
/* don't clean pid table and strtab */
return;
}
contiguity of the fake ones with the corresponding real ones.) */
for (sva = PL_sv_arenaroot; sva; sva = svanext) {
- svanext = (SV*) SvANY(sva);
+ svanext = MUTABLE_SV(SvANY(sva));
while (svanext && SvFAKE(svanext))
- svanext = (SV*) SvANY(svanext);
+ svanext = MUTABLE_SV(SvANY(svanext));
if (!SvFAKE(sva))
Safefree(sva);
allocate body types with "ghost fields".
"ghost fields" are fields that are unused in certain types, and
-consequently dont need to actually exist. They are declared because
+consequently don't need to actually exist. They are declared because
they're part of a "base type", which allows use of functions as
methods. The simplest examples are AVs and HVs, 2 aggregate types
which don't use the fields which support SCALAR semantics.
-For these types, the arenas are carved up into *_allocated size
+For these types, the arenas are carved up into appropriately sized
chunks, we thus avoid wasted memory for those unaccessed members.
When bodies are allocated, we adjust the pointer back in memory by the
-size of the bit not allocated, so it's as if we allocated the full
+size of the part not allocated, so it's as if we allocated the full
structure. (But things will all go boom if you write to the part that
is "not there", because you'll be overwriting the last members of the
preceding structure in memory.)
-We calculate the correction using the STRUCT_OFFSET macro. For
-example, if xpv_allocated is the same structure as XPV then the two
-OFFSETs sum to zero, and the pointer is unchanged. If the allocated
-structure is smaller (no initial NV actually allocated) then the net
-effect is to subtract the size of the NV from the pointer, to return a
-new pointer as if an initial NV were actually allocated.
+We calculate the correction using the STRUCT_OFFSET macro on the first
+member present. If the allocated structure is smaller (no initial NV
+actually allocated) then the net effect is to subtract the size of the NV
+from the pointer, to return a new pointer as if an initial NV were actually
+allocated. (We were using structures named *_allocated for this, but
+this turned out to be a subtle bug, because a structure without an NV
+could have a lower alignment constraint, but the compiler is allowed to
+optimised accesses based on the alignment constraint of the actual pointer
+to the full structure, for example, using a single 64 bit load instruction
+because it "knows" that two adjacent 32 bit members will be 8-byte aligned.)
This is the same trick as was used for NV and IV bodies. Ironically it
doesn't need to be used for NV bodies any more, because NV is now at
Body_size determines how big a body is, and therefore how many fit into
each arena. Offset carries the body-pointer adjustment needed for
-*_allocated body types, and is used in *_allocated macros.
+"ghost fields", and is used in *_allocated macros.
But its main purpose is to parameterize info needed in
Perl_sv_upgrade(). The info here dramatically simplifies the function
-vs the implementation in 5.8.7, making it table-driven. All fields
+vs the implementation in 5.8.8, making it table-driven. All fields
are used for this, except for arena_size.
For the sv-types that have no bodies, arenas are not used, so those
? FIT_ARENAn (count, body_size) \
: FIT_ARENA0 (body_size)
-/* A macro to work out the offset needed to subtract from a pointer to (say)
-
-typedef struct {
- STRLEN xpv_cur;
- STRLEN xpv_len;
-} xpv_allocated;
-
-to make its members accessible via a pointer to (say)
-
-struct xpv {
- NV xnv_nv;
- STRLEN xpv_cur;
- STRLEN xpv_len;
-};
-
-*/
-
-#define relative_STRUCT_OFFSET(longer, shorter, member) \
- (STRUCT_OFFSET(shorter, member) - STRUCT_OFFSET(longer, member))
-
/* Calculate the length to copy. Specifically work out the length less any
final padding the compiler needed to add. See the comment in sv_upgrade
for why copying the padding proved to be a bug. */
#define copy_length(type, last_member) \
STRUCT_OFFSET(type, last_member) \
- + sizeof (((type*)SvANY((SV*)0))->last_member)
+ + sizeof (((type*)SvANY((const SV *)0))->last_member)
static const struct body_details bodies_by_type[] = {
{ sizeof(HE), 0, 0, SVt_NULL,
FIT_ARENA(0, sizeof(NV)) },
/* 8 bytes on most ILP32 with IEEE doubles */
- { sizeof(xpv_allocated),
- copy_length(XPV, xpv_len)
- - relative_STRUCT_OFFSET(xpv_allocated, XPV, xpv_cur),
- + relative_STRUCT_OFFSET(xpv_allocated, XPV, xpv_cur),
- SVt_PV, FALSE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpv_allocated)) },
+ { sizeof(XPV) - STRUCT_OFFSET(XPV, xpv_cur),
+ copy_length(XPV, xpv_len) - STRUCT_OFFSET(XPV, xpv_cur),
+ + STRUCT_OFFSET(XPV, xpv_cur),
+ SVt_PV, FALSE, NONV, HASARENA,
+ FIT_ARENA(0, sizeof(XPV) - STRUCT_OFFSET(XPV, xpv_cur)) },
/* 12 */
- { sizeof(xpviv_allocated),
- copy_length(XPVIV, xiv_u)
- - relative_STRUCT_OFFSET(xpviv_allocated, XPVIV, xpv_cur),
- + relative_STRUCT_OFFSET(xpviv_allocated, XPVIV, xpv_cur),
- SVt_PVIV, FALSE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpviv_allocated)) },
+ { sizeof(XPVIV) - STRUCT_OFFSET(XPV, xpv_cur),
+ copy_length(XPVIV, xiv_u) - STRUCT_OFFSET(XPV, xpv_cur),
+ + STRUCT_OFFSET(XPVIV, xpv_cur),
+ SVt_PVIV, FALSE, NONV, HASARENA,
+ FIT_ARENA(0, sizeof(XPV) - STRUCT_OFFSET(XPV, xpv_cur)) },
/* 20 */
{ sizeof(XPVNV), copy_length(XPVNV, xiv_u), 0, SVt_PVNV, FALSE, HADNV,
HASARENA, FIT_ARENA(0, sizeof(XPVMG)) },
/* something big */
- { sizeof(struct regexp_allocated), sizeof(struct regexp_allocated),
- + relative_STRUCT_OFFSET(struct regexp_allocated, regexp, xpv_cur),
+ { sizeof(regexp) - STRUCT_OFFSET(regexp, xpv_cur),
+ sizeof(regexp) - STRUCT_OFFSET(regexp, xpv_cur),
+ + STRUCT_OFFSET(regexp, xpv_cur),
SVt_REGEXP, FALSE, NONV, HASARENA,
- FIT_ARENA(0, sizeof(struct regexp_allocated))
+ FIT_ARENA(0, sizeof(regexp) - STRUCT_OFFSET(regexp, xpv_cur))
},
/* 48 */
{ sizeof(XPVLV), sizeof(XPVLV), 0, SVt_PVLV, TRUE, HADNV,
HASARENA, FIT_ARENA(0, sizeof(XPVLV)) },
- { sizeof(xpvav_allocated),
- copy_length(XPVAV, xmg_stash)
- - relative_STRUCT_OFFSET(xpvav_allocated, XPVAV, xav_fill),
- + relative_STRUCT_OFFSET(xpvav_allocated, XPVAV, xav_fill),
- SVt_PVAV, TRUE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpvav_allocated)) },
+ { sizeof(XPVAV) - STRUCT_OFFSET(XPVAV, xav_fill),
+ copy_length(XPVAV, xmg_stash) - STRUCT_OFFSET(XPVAV, xav_fill),
+ + STRUCT_OFFSET(XPVAV, xav_fill),
+ SVt_PVAV, TRUE, NONV, HASARENA,
+ FIT_ARENA(0, sizeof(XPVAV) - STRUCT_OFFSET(XPVAV, xav_fill)) },
- { sizeof(xpvhv_allocated),
- copy_length(XPVHV, xmg_stash)
- - relative_STRUCT_OFFSET(xpvhv_allocated, XPVHV, xhv_fill),
- + relative_STRUCT_OFFSET(xpvhv_allocated, XPVHV, xhv_fill),
- SVt_PVHV, TRUE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpvhv_allocated)) },
+ { sizeof(XPVHV) - STRUCT_OFFSET(XPVHV, xhv_fill),
+ copy_length(XPVHV, xmg_stash) - STRUCT_OFFSET(XPVHV, xhv_fill),
+ + STRUCT_OFFSET(XPVHV, xhv_fill),
+ SVt_PVHV, TRUE, NONV, HASARENA,
+ FIT_ARENA(0, sizeof(XPVHV) - STRUCT_OFFSET(XPVHV, xhv_fill)) },
/* 56 */
- { sizeof(xpvcv_allocated), sizeof(xpvcv_allocated),
- + relative_STRUCT_OFFSET(xpvcv_allocated, XPVCV, xpv_cur),
- SVt_PVCV, TRUE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpvcv_allocated)) },
-
- { sizeof(xpvfm_allocated), sizeof(xpvfm_allocated),
- + relative_STRUCT_OFFSET(xpvfm_allocated, XPVFM, xpv_cur),
- SVt_PVFM, TRUE, NONV, NOARENA, FIT_ARENA(20, sizeof(xpvfm_allocated)) },
+ { sizeof(XPVCV) - STRUCT_OFFSET(XPVCV, xpv_cur),
+ sizeof(XPVCV) - STRUCT_OFFSET(XPVCV, xpv_cur),
+ + STRUCT_OFFSET(XPVCV, xpv_cur),
+ SVt_PVCV, TRUE, NONV, HASARENA,
+ FIT_ARENA(0, sizeof(XPVCV) - STRUCT_OFFSET(XPVCV, xpv_cur)) },
+
+ { sizeof(XPVFM) - STRUCT_OFFSET(XPVFM, xpv_cur),
+ sizeof(XPVFM) - STRUCT_OFFSET(XPVFM, xpv_cur),
+ + STRUCT_OFFSET(XPVFM, xpv_cur),
+ SVt_PVFM, TRUE, NONV, NOARENA,
+ FIT_ARENA(20, sizeof(XPVFM) - STRUCT_OFFSET(XPVFM, xpv_cur)) },
/* XPVIO is 84 bytes, fits 48x */
- { sizeof(xpvio_allocated), sizeof(xpvio_allocated),
- + relative_STRUCT_OFFSET(xpvio_allocated, XPVIO, xpv_cur),
- SVt_PVIO, TRUE, NONV, HASARENA, FIT_ARENA(24, sizeof(xpvio_allocated)) },
+ { sizeof(XPVIO) - STRUCT_OFFSET(XPVIO, xpv_cur),
+ sizeof(XPVIO) - STRUCT_OFFSET(XPVIO, xpv_cur),
+ + STRUCT_OFFSET(XPVIO, xpv_cur),
+ SVt_PVIO, TRUE, NONV, HASARENA,
+ FIT_ARENA(24, sizeof(XPVIO) - STRUCT_OFFSET(XPVIO, xpv_cur)) },
};
#define new_body_type(sv_type) \
PERL_ARGS_ASSERT_SV_UPGRADE;
+ if (old_type == new_type)
+ return;
+
+ /* This clause was purposefully added ahead of the early return above to
+ the shared string hackery for (sort {$a <=> $b} keys %hash), with the
+ inference by Nick I-S that it would fix other troublesome cases. See
+ changes 7162, 7163 (f130fd4589cf5fbb24149cd4db4137c8326f49c1 and parent)
+
+ Given that shared hash key scalars are no longer PVIV, but PV, there is
+ no longer need to unshare so as to free up the IVX slot for its proper
+ purpose. So it's safe to move the early return earlier. */
+
if (new_type != SVt_PV && SvIsCOW(sv)) {
sv_force_normal_flags(sv, 0);
}
- if (old_type == new_type)
- return;
-
old_body = SvANY(sv);
/* Copying structures onto other structures that have been neatly zeroed
SvNV_set(sv, 0);
#endif
- if (new_type == SVt_PVIO)
+ if (new_type == SVt_PVIO) {
+ IO * const io = MUTABLE_IO(sv);
+ GV *iogv = gv_fetchpvs("FileHandle::", 0, SVt_PVHV);
+
+ SvOBJECT_on(io);
+ /* Clear the stashcache because a new IO could overrule a package
+ name */
+ hv_clear(PL_stashcache);
+
+ /* unless exists($main::{FileHandle}) and
+ defined(%main::FileHandle::) */
+ if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv))))
+ iogv = gv_fetchpvs("IO::Handle::", GV_ADD, SVt_PVHV);
+ SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
IoPAGE_LEN(sv) = 60;
+ }
if (old_type < SVt_PV) {
/* referant will be NULL unless the old type was SVt_IV emulating
SVt_RV */
return TRUE;
}
-STATIC char *
-S_glob_2pv(pTHX_ GV * const gv, STRLEN * const len)
-{
- const U32 wasfake = SvFLAGS(gv) & SVf_FAKE;
- SV *const buffer = sv_newmortal();
-
- PERL_ARGS_ASSERT_GLOB_2PV;
-
- /* FAKE globs can get coerced, so need to turn this off temporarily if it
- is on. */
- SvFAKE_off(gv);
- gv_efullname3(buffer, gv, "*");
- SvFLAGS(gv) |= wasfake;
-
- assert(SvPOK(buffer));
- if (len) {
- *len = SvCUR(buffer);
- }
- return SvPVX(buffer);
-}
-
/* Actually, ISO C leaves conversion of UV to IV undefined, but
until proven guilty, assume that things are not that bad... */
}
else {
if (isGV_with_GP(sv))
- return glob_2number((GV *)sv);
+ return glob_2number(MUTABLE_GV(sv));
if (!(SvFLAGS(sv) & SVs_PADTMP)) {
if (!PL_localizing && ckWARN(WARN_UNINITIALIZED))
}
else {
if (isGV_with_GP(sv)) {
- glob_2number((GV *)sv);
+ glob_2number(MUTABLE_GV(sv));
return 0.0;
}
STRLEN len;
char *retval;
char *buffer;
- const SV *const referent = (SV*)SvRV(sv);
+ SV *const referent = SvRV(sv);
if (!referent) {
len = 7;
retval = buffer = savepvn("NULLREF", len);
} else if (SvTYPE(referent) == SVt_REGEXP) {
- const REGEXP * const re = (REGEXP *)referent;
+ REGEXP * const re = (REGEXP *)MUTABLE_PTR(referent);
I32 seen_evals = 0;
assert(re);
*s = '\0';
}
else if (SvNOKp(sv)) {
- const int olderrno = errno;
+ dSAVE_ERRNO;
if (SvTYPE(sv) < SVt_PVNV)
sv_upgrade(sv, SVt_PVNV);
/* The +20 is pure guesswork. Configure test needed. --jhi */
{
Gconvert(SvNVX(sv), NV_DIG, 0, s);
}
- errno = olderrno;
+ RESTORE_ERRNO;
#ifdef FIXNEGATIVEZERO
if (*s == '-' && s[1] == '0' && !s[2]) {
s[0] = '0';
#endif
}
else {
- if (isGV_with_GP(sv))
- return glob_2pv((GV *)sv, lp);
+ if (isGV_with_GP(sv)) {
+ GV *const gv = MUTABLE_GV(sv);
+ const U32 wasfake = SvFLAGS(gv) & SVf_FAKE;
+ SV *const buffer = sv_newmortal();
+
+ /* FAKE globs can get coerced, so need to turn this off temporarily
+ if it is on. */
+ SvFAKE_off(gv);
+ gv_efullname3(buffer, gv, "*");
+ SvFLAGS(gv) |= wasfake;
+
+ assert(SvPOK(buffer));
+ if (lp) {
+ *lp = SvCUR(buffer);
+ }
+ return SvPVX(buffer);
+ }
if (lp)
*lp = 0;
Converts the PV of an SV to its UTF-8-encoded form.
Forces the SV to string form if it is not already.
+Will C<mg_get> on C<sv> if appropriate.
Always sets the SvUTF8 flag to avoid future validity checks even
-if all the bytes have hibit clear.
+if the whole string is the same in UTF-8 as not.
+Returns the number of bytes in the converted string
This is not as a general purpose byte encoding to Unicode interface:
use the Encode extension for that.
+=for apidoc sv_utf8_upgrade_nomg
+
+Like sv_utf8_upgrade, but doesn't do magic on C<sv>
+
=for apidoc sv_utf8_upgrade_flags
Converts the PV of an SV to its UTF-8-encoded form.
Forces the SV to string form if it is not already.
Always sets the SvUTF8 flag to avoid future validity checks even
-if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set,
-will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and
+if all the bytes are invariant in UTF-8. If C<flags> has C<SV_GMAGIC> bit set,
+will C<mg_get> on C<sv> if appropriate, else not.
+Returns the number of bytes in the converted string
+C<sv_utf8_upgrade> and
C<sv_utf8_upgrade_nomg> are implemented in terms of this function.
This is not as a general purpose byte encoding to Unicode interface:
use the Encode extension for that.
=cut
+
+The grow version is currently not externally documented. It adds a parameter,
+extra, which is the number of unused bytes the string of 'sv' is guaranteed to
+have free after it upon return. This allows the caller to reserve extra space
+that it intends to fill, to avoid extra grows.
+
+Also externally undocumented for the moment is the flag SV_FORCE_UTF8_UPGRADE,
+which can be used to tell this function to not first check to see if there are
+any characters that are different in UTF-8 (variant characters) which would
+force it to allocate a new string to sv, but to assume there are. Typically
+this flag is used by a routine that has already parsed the string to find that
+there are such characters, and passes this information on so that the work
+doesn't have to be repeated.
+
+(One might think that the calling routine could pass in the position of the
+first such variant, so it wouldn't have to be found again. But that is not the
+case, because typically when the caller is likely to use this flag, it won't be
+calling this routine unless it finds something that won't fit into a byte.
+Otherwise it tries to not upgrade and just use bytes. But some things that
+do fit into a byte are variants in utf8, and the caller may not have been
+keeping track of these.)
+
+If the routine itself changes the string, it adds a trailing NUL. Such a NUL
+isn't guaranteed due to having other routines do the work in some input cases,
+or if the input is already flagged as being in utf8.
+
+The speed of this could perhaps be improved for many cases if someone wanted to
+write a fast function that counts the number of variant characters in a string,
+especially if it could return the position of the first one.
+
*/
STRLEN
-Perl_sv_utf8_upgrade_flags(pTHX_ register SV *const sv, const I32 flags)
+Perl_sv_utf8_upgrade_flags_grow(pTHX_ register SV *const sv, const I32 flags, STRLEN extra)
{
dVAR;
- PERL_ARGS_ASSERT_SV_UTF8_UPGRADE_FLAGS;
+ PERL_ARGS_ASSERT_SV_UTF8_UPGRADE_FLAGS_GROW;
if (sv == &PL_sv_undef)
return 0;
STRLEN len = 0;
if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) {
(void) sv_2pv_flags(sv,&len, flags);
- if (SvUTF8(sv))
+ if (SvUTF8(sv)) {
+ if (extra) SvGROW(sv, SvCUR(sv) + extra);
return len;
+ }
} else {
(void) SvPV_force(sv,len);
}
}
if (SvUTF8(sv)) {
+ if (extra) SvGROW(sv, SvCUR(sv) + extra);
return SvCUR(sv);
}
sv_force_normal_flags(sv, 0);
}
- if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING))
+ if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) {
sv_recode_to_utf8(sv, PL_encoding);
- else { /* Assume Latin-1/EBCDIC */
+ if (extra) SvGROW(sv, SvCUR(sv) + extra);
+ return SvCUR(sv);
+ }
+
+ if (SvCUR(sv) > 0) { /* Assume Latin-1/EBCDIC */
/* This function could be much more efficient if we
- * had a FLAG in SVs to signal if there are any hibit
+ * had a FLAG in SVs to signal if there are any variant
* chars in the PV. Given that there isn't such a flag
- * make the loop as fast as possible. */
- const U8 * const s = (U8 *) SvPVX_const(sv);
- const U8 * const e = (U8 *) SvEND(sv);
- const U8 *t = s;
+ * make the loop as fast as possible (although there are certainly ways
+ * to speed this up, eg. through vectorization) */
+ U8 * s = (U8 *) SvPVX_const(sv);
+ U8 * e = (U8 *) SvEND(sv);
+ U8 *t = s;
+ STRLEN two_byte_count = 0;
+ if (flags & SV_FORCE_UTF8_UPGRADE) goto must_be_utf8;
+
+ /* See if really will need to convert to utf8. We mustn't rely on our
+ * incoming SV being well formed and having a trailing '\0', as certain
+ * code in pp_formline can send us partially built SVs. */
+
while (t < e) {
const U8 ch = *t++;
- /* Check for hi bit */
- if (!NATIVE_IS_INVARIANT(ch)) {
- STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
- U8 * const recoded = bytes_to_utf8((U8*)s, &len);
-
- SvPV_free(sv); /* No longer using what was there before. */
- SvPV_set(sv, (char*)recoded);
- SvCUR_set(sv, len - 1);
- SvLEN_set(sv, len); /* No longer know the real size. */
- break;
- }
+ if (NATIVE_IS_INVARIANT(ch)) continue;
+
+ t--; /* t already incremented; re-point to first variant */
+ two_byte_count = 1;
+ goto must_be_utf8;
}
- /* Mark as UTF-8 even if no hibit - saves scanning loop */
+
+ /* utf8 conversion not needed because all are invariants. Mark as
+ * UTF-8 even if no variant - saves scanning loop */
SvUTF8_on(sv);
+ return SvCUR(sv);
+
+must_be_utf8:
+
+ /* Here, the string should be converted to utf8, either because of an
+ * input flag (two_byte_count = 0), or because a character that
+ * requires 2 bytes was found (two_byte_count = 1). t points either to
+ * the beginning of the string (if we didn't examine anything), or to
+ * the first variant. In either case, everything from s to t - 1 will
+ * occupy only 1 byte each on output.
+ *
+ * There are two main ways to convert. One is to create a new string
+ * and go through the input starting from the beginning, appending each
+ * converted value onto the new string as we go along. It's probably
+ * best to allocate enough space in the string for the worst possible
+ * case rather than possibly running out of space and having to
+ * reallocate and then copy what we've done so far. Since everything
+ * from s to t - 1 is invariant, the destination can be initialized
+ * with these using a fast memory copy
+ *
+ * The other way is to figure out exactly how big the string should be
+ * by parsing the entire input. Then you don't have to make it big
+ * enough to handle the worst possible case, and more importantly, if
+ * the string you already have is large enough, you don't have to
+ * allocate a new string, you can copy the last character in the input
+ * string to the final position(s) that will be occupied by the
+ * converted string and go backwards, stopping at t, since everything
+ * before that is invariant.
+ *
+ * There are advantages and disadvantages to each method.
+ *
+ * In the first method, we can allocate a new string, do the memory
+ * copy from the s to t - 1, and then proceed through the rest of the
+ * string byte-by-byte.
+ *
+ * In the second method, we proceed through the rest of the input
+ * string just calculating how big the converted string will be. Then
+ * there are two cases:
+ * 1) if the string has enough extra space to handle the converted
+ * value. We go backwards through the string, converting until we
+ * get to the position we are at now, and then stop. If this
+ * position is far enough along in the string, this method is
+ * faster than the other method. If the memory copy were the same
+ * speed as the byte-by-byte loop, that position would be about
+ * half-way, as at the half-way mark, parsing to the end and back
+ * is one complete string's parse, the same amount as starting
+ * over and going all the way through. Actually, it would be
+ * somewhat less than half-way, as it's faster to just count bytes
+ * than to also copy, and we don't have the overhead of allocating
+ * a new string, changing the scalar to use it, and freeing the
+ * existing one. But if the memory copy is fast, the break-even
+ * point is somewhere after half way. The counting loop could be
+ * sped up by vectorization, etc, to move the break-even point
+ * further towards the beginning.
+ * 2) if the string doesn't have enough space to handle the converted
+ * value. A new string will have to be allocated, and one might
+ * as well, given that, start from the beginning doing the first
+ * method. We've spent extra time parsing the string and in
+ * exchange all we've gotten is that we know precisely how big to
+ * make the new one. Perl is more optimized for time than space,
+ * so this case is a loser.
+ * So what I've decided to do is not use the 2nd method unless it is
+ * guaranteed that a new string won't have to be allocated, assuming
+ * the worst case. I also decided not to put any more conditions on it
+ * than this, for now. It seems likely that, since the worst case is
+ * twice as big as the unknown portion of the string (plus 1), we won't
+ * be guaranteed enough space, causing us to go to the first method,
+ * unless the string is short, or the first variant character is near
+ * the end of it. In either of these cases, it seems best to use the
+ * 2nd method. The only circumstance I can think of where this would
+ * be really slower is if the string had once had much more data in it
+ * than it does now, but there is still a substantial amount in it */
+
+ {
+ STRLEN invariant_head = t - s;
+ STRLEN size = invariant_head + (e - t) * 2 + 1 + extra;
+ if (SvLEN(sv) < size) {
+
+ /* Here, have decided to allocate a new string */
+
+ U8 *dst;
+ U8 *d;
+
+ Newx(dst, size, U8);
+
+ /* If no known invariants at the beginning of the input string,
+ * set so starts from there. Otherwise, can use memory copy to
+ * get up to where we are now, and then start from here */
+
+ if (invariant_head <= 0) {
+ d = dst;
+ } else {
+ Copy(s, dst, invariant_head, char);
+ d = dst + invariant_head;
+ }
+
+ while (t < e) {
+ const UV uv = NATIVE8_TO_UNI(*t++);
+ if (UNI_IS_INVARIANT(uv))
+ *d++ = (U8)UNI_TO_NATIVE(uv);
+ else {
+ *d++ = (U8)UTF8_EIGHT_BIT_HI(uv);
+ *d++ = (U8)UTF8_EIGHT_BIT_LO(uv);
+ }
+ }
+ *d = '\0';
+ SvPV_free(sv); /* No longer using pre-existing string */
+ SvPV_set(sv, (char*)dst);
+ SvCUR_set(sv, d - dst);
+ SvLEN_set(sv, size);
+ } else {
+
+ /* Here, have decided to get the exact size of the string.
+ * Currently this happens only when we know that there is
+ * guaranteed enough space to fit the converted string, so
+ * don't have to worry about growing. If two_byte_count is 0,
+ * then t points to the first byte of the string which hasn't
+ * been examined yet. Otherwise two_byte_count is 1, and t
+ * points to the first byte in the string that will expand to
+ * two. Depending on this, start examining at t or 1 after t.
+ * */
+
+ U8 *d = t + two_byte_count;
+
+
+ /* Count up the remaining bytes that expand to two */
+
+ while (d < e) {
+ const U8 chr = *d++;
+ if (! NATIVE_IS_INVARIANT(chr)) two_byte_count++;
+ }
+
+ /* The string will expand by just the number of bytes that
+ * occupy two positions. But we are one afterwards because of
+ * the increment just above. This is the place to put the
+ * trailing NUL, and to set the length before we decrement */
+
+ d += two_byte_count;
+ SvCUR_set(sv, d - s);
+ *d-- = '\0';
+
+
+ /* Having decremented d, it points to the position to put the
+ * very last byte of the expanded string. Go backwards through
+ * the string, copying and expanding as we go, stopping when we
+ * get to the part that is invariant the rest of the way down */
+
+ e--;
+ while (e >= t) {
+ const U8 ch = NATIVE8_TO_UNI(*e--);
+ if (UNI_IS_INVARIANT(ch)) {
+ *d-- = UNI_TO_NATIVE(ch);
+ } else {
+ *d-- = (U8)UTF8_EIGHT_BIT_LO(ch);
+ *d-- = (U8)UTF8_EIGHT_BIT_HI(ch);
+ }
+ }
+ }
+ }
}
+
+ /* Mark as UTF-8 even if no variant - saves scanning loop */
+ SvUTF8_on(sv);
return SvCUR(sv);
}
=for apidoc sv_utf8_downgrade
Attempts to convert the PV of an SV from characters to bytes.
-If the PV contains a character beyond byte, this conversion will fail;
+If the PV contains a character that cannot fit
+in a byte, this conversion will fail;
in this case, either returns false or, if C<fail_ok> is not
true, croaks.
sv_force_normal_flags(sv, 0);
}
if (SvREADONLY(sv)) {
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
}
(void) sv_utf8_upgrade(sv);
SvUTF8_off(sv);
}
GvSTASH(dstr) = GvSTASH(sstr);
if (GvSTASH(dstr))
- Perl_sv_add_backref(aTHX_ (SV*)GvSTASH(dstr), dstr);
- gv_name_set((GV *)dstr, name, len, GV_ADD);
+ Perl_sv_add_backref(aTHX_ MUTABLE_SV(GvSTASH(dstr)), dstr);
+ gv_name_set(MUTABLE_GV(dstr), name, len, GV_ADD);
SvFAKE_on(dstr); /* can coerce to non-glob */
}
-#ifdef GV_UNIQUE_CHECK
- if (GvUNIQUE((GV*)dstr)) {
- Perl_croak(aTHX_ PL_no_modify);
- }
-#endif
-
- if(GvGP((GV*)sstr)) {
+ if(GvGP(MUTABLE_GV(sstr))) {
/* If source has method cache entry, clear it */
if(GvCVGEN(sstr)) {
SvREFCNT_dec(GvCV(sstr));
}
/* If source has a real method, then a method is
going to change */
- else if(GvCV((GV*)sstr)) {
+ else if(GvCV((const GV *)sstr)) {
mro_changes = 1;
}
}
/* If dest already had a real method, that's a change as well */
- if(!mro_changes && GvGP((GV*)dstr) && GvCVu((GV*)dstr)) {
+ if(!mro_changes && GvGP(MUTABLE_GV(dstr)) && GvCVu((const GV *)dstr)) {
mro_changes = 1;
}
- if(strEQ(GvNAME((GV*)dstr),"ISA"))
+ if(strEQ(GvNAME((const GV *)dstr),"ISA"))
mro_changes = 2;
- gp_free((GV*)dstr);
+ gp_free(MUTABLE_GV(dstr));
isGV_with_GP_off(dstr);
(void)SvOK_off(dstr);
isGV_with_GP_on(dstr);
SV **location;
U8 import_flag = 0;
const U32 stype = SvTYPE(sref);
+ bool mro_changes = FALSE;
PERL_ARGS_ASSERT_GLOB_ASSIGN_REF;
-#ifdef GV_UNIQUE_CHECK
- if (GvUNIQUE((GV*)dstr)) {
- Perl_croak(aTHX_ PL_no_modify);
- }
-#endif
-
if (intro) {
GvINTRO_off(dstr); /* one-shot flag */
GvLINE(dstr) = CopLINE(PL_curcop);
- GvEGV(dstr) = (GV*)dstr;
+ GvEGV(dstr) = MUTABLE_GV(dstr);
}
GvMULTI_on(dstr);
switch (stype) {
goto common;
case SVt_PVAV:
location = (SV **) &GvAV(dstr);
+ if (strEQ(GvNAME((GV*)dstr), "ISA"))
+ mro_changes = TRUE;
import_flag = GVf_IMPORTED_AV;
goto common;
case SVt_PVIO:
goto common;
case SVt_PVFM:
location = (SV **) &GvFORM(dstr);
+ goto common;
default:
location = &GvSV(dstr);
import_flag = GVf_IMPORTED_SV;
common:
if (intro) {
if (stype == SVt_PVCV) {
- /*if (GvCVGEN(dstr) && (GvCV(dstr) != (CV*)sref || GvCVGEN(dstr))) {*/
+ /*if (GvCVGEN(dstr) && (GvCV(dstr) != (const CV *)sref || GvCVGEN(dstr))) {*/
if (GvCVGEN(dstr)) {
SvREFCNT_dec(GvCV(dstr));
GvCV(dstr) = NULL;
else
dref = *location;
if (stype == SVt_PVCV && (*location != sref || GvCVGEN(dstr))) {
- CV* const cv = (CV*)*location;
+ CV* const cv = MUTABLE_CV(*location);
if (cv) {
- if (!GvCVGEN((GV*)dstr) &&
+ if (!GvCVGEN((const GV *)dstr) &&
(CvROOT(cv) || CvXSUB(cv)))
{
/* Redefining a sub - warning is mandatory if
it was a const and its value changed. */
- if (CvCONST(cv) && CvCONST((CV*)sref)
- && cv_const_sv(cv) == cv_const_sv((CV*)sref)) {
+ if (CvCONST(cv) && CvCONST((const CV *)sref)
+ && cv_const_sv(cv)
+ == cv_const_sv((const CV *)sref)) {
NOOP;
/* They are 2 constant subroutines generated from
the same constant. This probably means that
}
else if (ckWARN(WARN_REDEFINE)
|| (CvCONST(cv)
- && (!CvCONST((CV*)sref)
+ && (!CvCONST((const CV *)sref)
|| sv_cmp(cv_const_sv(cv),
- cv_const_sv((CV*)sref))))) {
+ cv_const_sv((const CV *)
+ sref))))) {
Perl_warner(aTHX_ packWARN(WARN_REDEFINE),
(const char *)
(CvCONST(cv)
? "Constant subroutine %s::%s redefined"
: "Subroutine %s::%s redefined"),
- HvNAME_get(GvSTASH((GV*)dstr)),
- GvENAME((GV*)dstr));
+ HvNAME_get(GvSTASH((const GV *)dstr)),
+ GvENAME(MUTABLE_GV(dstr)));
}
}
if (!intro)
- cv_ckproto_len(cv, (GV*)dstr,
+ cv_ckproto_len(cv, (const GV *)dstr,
SvPOK(sref) ? SvPVX_const(sref) : NULL,
SvPOK(sref) ? SvCUR(sref) : 0);
}
SvREFCNT_dec(dref);
if (SvTAINTED(sstr))
SvTAINT(dstr);
+ if (mro_changes) mro_isa_changed_in(GvSTASH(dstr));
return;
}
Perl_croak(aTHX_ "Cannot copy to %s", type);
} else if (sflags & SVf_ROK) {
if (isGV_with_GP(dstr) && dtype == SVt_PVGV
- && SvTYPE(SvRV(sstr)) == SVt_PVGV) {
+ && SvTYPE(SvRV(sstr)) == SVt_PVGV && isGV_with_GP(SvRV(sstr))) {
sstr = SvRV(sstr);
if (sstr == dstr) {
if (GvIMPORTED(dstr) != GVf_IMPORTED
GvMULTI_on(dstr);
return;
}
- if (isGV_with_GP(sstr)) {
- glob_assign_glob(dstr, sstr, dtype);
- return;
- }
+ glob_assign_glob(dstr, sstr, dtype);
+ return;
}
if (dtype >= SVt_PV) {
}
else {
GV *gv = gv_fetchsv(sstr, GV_ADD, SVt_PVGV);
- if (dstr != (SV*)gv) {
+ if (dstr != (const SV *)gv) {
if (GvGP(dstr))
- gp_free((GV*)dstr);
+ gp_free(MUTABLE_GV(dstr));
GvGP(dstr) = gp_ref(GvGP(gv));
}
}
&& ((flags & SV_COW_SHARED_HASH_KEYS)
? (!((sflags & CAN_COW_MASK) == CAN_COW_FLAGS
&& (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS
- && SvTYPE(sstr) >= SVt_PVIV))
+ && SvTYPE(sstr) >= SVt_PVIV && SvTYPE(sstr) != SVt_PVFM))
: 1)
#endif
) {
}
#ifdef PERL_OLD_COPY_ON_WRITE
if (!isSwipe) {
- /* I believe I should acquire a global SV mutex if
- it's a COW sv (not a shared hash key) to stop
- it going un copy-on-write.
- If the source SV has gone un copy on write between up there
- and down here, then (assert() that) it is of the correct
- form to make it copy on write again */
if ((sflags & (SVf_FAKE | SVf_READONLY))
!= (SVf_FAKE | SVf_READONLY)) {
SvREADONLY_on(sstr);
SvCUR_set(dstr, cur);
SvREADONLY_on(dstr);
SvFAKE_on(dstr);
- /* Relesase a global SV mutex. */
}
else
{ /* Passes the swipe test. */
/* FAKE globs can get coerced, so need to turn this off
temporarily if it is on. */
SvFAKE_off(sstr);
- gv_efullname3(dstr, (GV *)sstr, "*");
+ gv_efullname3(dstr, MUTABLE_GV(sstr), "*");
SvFLAGS(sstr) |= wasfake;
}
else
#ifdef PERL_OLD_COPY_ON_WRITE
if (SvREADONLY(sv)) {
- /* At this point I believe I should acquire a global SV mutex. */
if (SvFAKE(sv)) {
const char * const pvx = SvPVX_const(sv);
const STRLEN len = SvLEN(sv);
}
}
else if (IN_PERL_RUNTIME)
- Perl_croak(aTHX_ PL_no_modify);
- /* At this point I believe that I can drop the global SV mutex. */
+ Perl_croak(aTHX_ "%s", PL_no_modify);
}
#else
if (SvREADONLY(sv)) {
unshare_hek(SvSHARED_HEK_FROM_PV(pvx));
}
else if (IN_PERL_RUNTIME)
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
}
#endif
if (SvROK(sv))
#ifdef DEBUGGING
const U8 *real_start;
#endif
+ STRLEN max_delta;
PERL_ARGS_ASSERT_SV_CHOP;
/* Nothing to do. */
return;
}
- assert(ptr > SvPVX_const(sv));
+ /* SvPVX(sv) may move in SV_CHECK_THINKFIRST(sv), but after this line,
+ nothing uses the value of ptr any more. */
+ max_delta = SvLEN(sv) ? SvLEN(sv) : SvCUR(sv);
+ if (ptr <= SvPVX_const(sv))
+ Perl_croak(aTHX_ "panic: sv_chop ptr=%p, start=%p, end=%p",
+ ptr, SvPVX_const(sv), SvPVX_const(sv) + max_delta);
SV_CHECK_THINKFIRST(sv);
+ if (delta > max_delta)
+ Perl_croak(aTHX_ "panic: sv_chop ptr=%p (was %p), start=%p, end=%p",
+ SvPVX_const(sv) + delta, ptr, SvPVX_const(sv),
+ SvPVX_const(sv) + max_delta);
if (!SvOOK(sv)) {
if (!SvLEN(sv)) { /* make copy of shared string */
spv = SvPV_const(csv, slen);
}
else
- sv_utf8_upgrade_nomg(dsv);
+ /* Leave enough space for the cat that's about to happen */
+ sv_utf8_upgrade_flags_grow(dsv, 0, slen);
}
sv_catpvn_nomg(dsv, spv, slen);
}
how == PERL_MAGIC_arylen ||
how == PERL_MAGIC_symtab ||
(SvTYPE(obj) == SVt_PVGV &&
- (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv ||
- GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv ||
- GvFORM(obj) == (CV*)sv)))
+ (GvSV(obj) == sv || GvHV(obj) == (const HV *)sv
+ || GvAV(obj) == (const AV *)sv || GvCV(obj) == (const CV *)sv
+ || GvIOp(obj) == (const IO *)sv || GvFORM(obj) == (const CV *)sv)))
{
mg->mg_obj = obj;
}
*/
if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO &&
- obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv)
+ obj && SvROK(obj) && GvIO(SvRV(obj)) == (const IO *)sv)
{
sv_rvweaken(obj);
}
if (name) {
if (namlen > 0)
mg->mg_ptr = savepvn(name, namlen);
- else if (namlen == HEf_SVKEY)
- mg->mg_ptr = (char*)SvREFCNT_inc_simple_NN((SV*)name);
- else
+ else if (namlen == HEf_SVKEY) {
+ /* Yes, this is casting away const. This is only for the case of
+ HEf_SVKEY. I think we need to document this abberation of the
+ constness of the API, rather than making name non-const, as
+ that change propagating outwards a long way. */
+ mg->mg_ptr = (char*)SvREFCNT_inc_simple_NN((SV *)name);
+ } else
mg->mg_ptr = (char *) name;
}
mg->mg_virtual = (MGVTBL *) vtable;
&& how != PERL_MAGIC_backref
)
{
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
}
}
if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) {
case PERL_MAGIC_qr:
vtable = &PL_vtbl_regexp;
break;
- case PERL_MAGIC_hints:
- /* As this vtable is all NULL, we can reuse it. */
case PERL_MAGIC_sig:
vtable = &PL_vtbl_sig;
break;
case PERL_MAGIC_hintselem:
vtable = &PL_vtbl_hintselem;
break;
+ case PERL_MAGIC_hints:
+ vtable = &PL_vtbl_hints;
+ break;
case PERL_MAGIC_ext:
/* Reserved for use by extensions not perl internals. */
/* Useful for attaching extension internal data to perl vars. */
if (mg->mg_len > 0)
Safefree(mg->mg_ptr);
else if (mg->mg_len == HEf_SVKEY)
- SvREFCNT_dec((SV*)mg->mg_ptr);
+ SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr));
else if (mg->mg_type == PERL_MAGIC_utf8)
Safefree(mg->mg_ptr);
}
* back-reference to sv onto the array associated with the backref magic.
*/
+/* A discussion about the backreferences array and its refcount:
+ *
+ * The AV holding the backreferences is pointed to either as the mg_obj of
+ * PERL_MAGIC_backref, or in the specific case of a HV that has the hv_aux
+ * structure, from the xhv_backreferences field. (A HV without hv_aux will
+ * have the standard magic instead.) The array is created with a refcount
+ * of 2. This means that if during global destruction the array gets
+ * picked on first to have its refcount decremented by the random zapper,
+ * it won't actually be freed, meaning it's still theere for when its
+ * parent gets freed.
+ * When the parent SV is freed, in the case of magic, the magic is freed,
+ * Perl_magic_killbackrefs is called which decrements one refcount, then
+ * mg_obj is freed which kills the second count.
+ * In the vase of a HV being freed, one ref is removed by
+ * Perl_hv_kill_backrefs, the other by Perl_sv_kill_backrefs, which it
+ * calls.
+ */
+
void
Perl_sv_add_backref(pTHX_ SV *const tsv, SV *const sv)
{
PERL_ARGS_ASSERT_SV_ADD_BACKREF;
if (SvTYPE(tsv) == SVt_PVHV) {
- AV **const avp = Perl_hv_backreferences_p(aTHX_ (HV*)tsv);
+ AV **const avp = Perl_hv_backreferences_p(aTHX_ MUTABLE_HV(tsv));
av = *avp;
if (!av) {
if (mg) {
/* Aha. They've got it stowed in magic. Bring it back. */
- av = (AV*)mg->mg_obj;
+ av = MUTABLE_AV(mg->mg_obj);
/* Stop mg_free decreasing the refernce count. */
mg->mg_obj = NULL;
/* Stop mg_free even calling the destructor, given that
} else {
av = newAV();
AvREAL_off(av);
- SvREFCNT_inc_simple_void(av);
+ SvREFCNT_inc_simple_void(av); /* see discussion above */
}
*avp = av;
}
const MAGIC *const mg
= SvMAGICAL(tsv) ? mg_find(tsv, PERL_MAGIC_backref) : NULL;
if (mg)
- av = (AV*)mg->mg_obj;
+ av = MUTABLE_AV(mg->mg_obj);
else {
av = newAV();
AvREAL_off(av);
- sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0);
- /* av now has a refcnt of 2, which avoids it getting freed
- * before us during global cleanup. The extra ref is removed
- * by magic_killbackrefs() when tsv is being freed */
+ sv_magic(tsv, MUTABLE_SV(av), PERL_MAGIC_backref, NULL, 0);
+ /* av now has a refcnt of 2; see discussion above */
}
}
if (AvFILLp(av) >= AvMAX(av)) {
PERL_ARGS_ASSERT_SV_DEL_BACKREF;
if (SvTYPE(tsv) == SVt_PVHV && SvOOK(tsv)) {
- av = *Perl_hv_backreferences_p(aTHX_ (HV*)tsv);
+ av = *Perl_hv_backreferences_p(aTHX_ MUTABLE_HV(tsv));
/* We mustn't attempt to "fix up" the hash here by moving the
backreference array back to the hv_aux structure, as that is stored
in the main HvARRAY(), and hfreentries assumes that no-one
const MAGIC *const mg
= SvMAGICAL(tsv) ? mg_find(tsv, PERL_MAGIC_backref) : NULL;
if (mg)
- av = (AV *)mg->mg_obj;
+ av = MUTABLE_AV(mg->mg_obj);
}
- if (!av) {
- if (PL_in_clean_all)
- return;
+
+ if (!av)
Perl_croak(aTHX_ "panic: del_backref");
- }
- if (SvIS_FREED(av))
- return;
+ assert(!SvIS_FREED(av));
svp = AvARRAY(av);
/* We shouldn't be in here more than once, but for paranoia reasons lets
PERL_ARGS_ASSERT_SV_KILL_BACKREFS;
PERL_UNUSED_ARG(sv);
- /* Not sure why the av can get freed ahead of its sv, but somehow it does
- in ext/B/t/bytecode.t test 15 (involving print <DATA>) */
- if (svp && !SvIS_FREED(av)) {
+ assert(!svp || !SvIS_FREED(av));
+ if (svp) {
SV *const *const last = svp + AvFILLp(av);
while (svp <= last) {
SvTYPE(referrer) == SVt_PVLV) {
/* You lookin' at me? */
assert(GvSTASH(referrer));
- assert(GvSTASH(referrer) == (HV*)sv);
+ assert(GvSTASH(referrer) == (const HV *)sv);
GvSTASH(referrer) = 0;
} else {
Perl_croak(aTHX_
SV_CHECK_THINKFIRST_COW_DROP(sv);
if (SvREFCNT(nsv) != 1) {
- Perl_croak(aTHX_ "panic: reference miscount on nsv in sv_replace() (%"
- UVuf " != 1)", (UV) SvREFCNT(nsv));
+ Perl_croak(aTHX_ "panic: reference miscount on nsv in sv_replace()"
+ " (%" UVuf " != 1)", (UV) SvREFCNT(nsv));
}
if (SvMAGICAL(sv)) {
if (SvMAGICAL(nsv))
CV* destructor;
stash = SvSTASH(sv);
destructor = StashHANDLER(stash,DESTROY);
- if (destructor) {
+ if (destructor
+ /* A constant subroutine can have no side effects, so
+ don't bother calling it. */
+ && !CvCONST(destructor)
+ /* Don't bother calling an empty destructor */
+ && (CvISXSUB(destructor)
+ || CvSTART(destructor)->op_next->op_type != OP_LEAVESUB))
+ {
SV* const tmpref = newRV(sv);
SvREADONLY_on(tmpref); /* DESTROY() could be naughty */
ENTER;
PUSHMARK(SP);
PUSHs(tmpref);
PUTBACK;
- call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID);
+ call_sv(MUTABLE_SV(destructor), G_DISCARD|G_EVAL|G_KEEPERR|G_VOID);
POPSTACK;
IoIFP(sv) != PerlIO_stdout() &&
IoIFP(sv) != PerlIO_stderr())
{
- io_close((IO*)sv, FALSE);
+ io_close(MUTABLE_IO(sv), FALSE);
}
if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
PerlDir_close(IoDIRP(sv));
goto freescalar;
case SVt_PVCV:
case SVt_PVFM:
- cv_undef((CV*)sv);
+ cv_undef(MUTABLE_CV(sv));
goto freescalar;
case SVt_PVHV:
- Perl_hv_kill_backrefs(aTHX_ (HV*)sv);
- hv_undef((HV*)sv);
+ if (PL_last_swash_hv == (const HV *)sv) {
+ PL_last_swash_hv = NULL;
+ }
+ Perl_hv_kill_backrefs(aTHX_ MUTABLE_HV(sv));
+ hv_undef(MUTABLE_HV(sv));
break;
case SVt_PVAV:
- if (PL_comppad == (AV*)sv) {
+ if (PL_comppad == MUTABLE_AV(sv)) {
PL_comppad = NULL;
PL_curpad = NULL;
}
- av_undef((AV*)sv);
+ av_undef(MUTABLE_AV(sv));
break;
case SVt_PVLV:
if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */
SvREFCNT_dec(LvTARG(sv));
case SVt_PVGV:
if (isGV_with_GP(sv)) {
- if(GvCVu((GV*)sv) && (stash = GvSTASH((GV*)sv)) && HvNAME_get(stash))
+ if(GvCVu((const GV *)sv) && (stash = GvSTASH(MUTABLE_GV(sv)))
+ && HvNAME_get(stash))
mro_method_changed_in(stash);
- gp_free((GV*)sv);
+ gp_free(MUTABLE_GV(sv));
if (GvNAME_HEK(sv))
unshare_hek(GvNAME_HEK(sv));
/* If we're in a stash, we don't own a reference to it. However it does
have a back reference to us, which needs to be cleared. */
if (!SvVALID(sv) && (stash = GvSTASH(sv)))
- sv_del_backref((SV*)stash, sv);
+ sv_del_backref(MUTABLE_SV(stash), sv);
}
/* FIXME. There are probably more unreferenced pointers to SVs in the
interpreter struct that we should check and tidy in a similar
fashion to this: */
- if ((GV*)sv == PL_last_in_gv)
+ if ((const GV *)sv == PL_last_in_gv)
PL_last_in_gv = NULL;
case SVt_PVMG:
case SVt_PVNV:
#ifdef PERL_OLD_COPY_ON_WRITE
else if (SvPVX_const(sv)) {
if (SvIsCOW(sv)) {
- /* I believe I need to grab the global SV mutex here and
- then recheck the COW status. */
if (DEBUG_C_TEST) {
PerlIO_printf(Perl_debug_log, "Copy on write: clear\n");
sv_dump(sv);
unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv)));
}
- /* And drop it here. */
SvFAKE_off(sv);
} else if (SvLEN(sv)) {
Safefree(SvPVX_const(sv));
*/
/*
- * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the
+ * The length is cached in PERL_MAGIC_utf8, in the mg_len field. Also the
* mg_ptr is used, by sv_pos_u2b() and sv_pos_b2u() - see the comments below.
* (Note that the mg_len is not the length of the mg_ptr field.
* This allows the cache to store the character length of the string without
/*
* sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential
- * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and
+ * PERL_MAGIC_utf8 of the sv to store the mapping between UTF-8 and
* byte offsets. See also the comments of S_utf8_mg_pos_cache_update().
*
*/
}
assert(cache);
- if (PL_utf8cache < 0) {
+ if (PL_utf8cache < 0 && SvPOKp(sv)) {
+ /* SvPOKp() because it's possible that sv has string overloading, and
+ therefore is a reference, hence SvPVX() is actually a pointer.
+ This cures the (very real) symptoms of RT 69422, but I'm not actually
+ sure whether we should even be caching the results of UTF-8
+ operations on overloading, given that nothing stops overloading
+ returning a different value every time it's called. */
const U8 *start = (const U8 *) SvPVX_const(sv);
const STRLEN realutf8 = utf8_length(start, start + byte);
/*
* sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential
- * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and
+ * PERL_MAGIC_utf8 of the sv to store the mapping between UTF-8 and
* byte offsets.
*
*/
#endif
if (bytesread < 0)
bytesread = 0;
- SvCUR_set(sv, bytesread += append);
+ SvCUR_set(sv, bytesread + append);
buffer[bytesread] = '\0';
goto return_string_or_null;
}
sv_force_normal_flags(sv, 0);
if (SvREADONLY(sv)) {
if (IN_PERL_RUNTIME)
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
}
if (SvROK(sv)) {
IV i;
d = SvPVX(sv);
while (isALPHA(*d)) d++;
while (isDIGIT(*d)) d++;
- if (*d) {
+ if (d < SvEND(sv)) {
#ifdef PERL_PRESERVE_IVUV
/* Got to punt this as an integer if needs be, but we don't issue
warnings. Probably ought to make the sv_iv_please() that does
sv_force_normal_flags(sv, 0);
if (SvREADONLY(sv)) {
if (IN_PERL_RUNTIME)
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
}
if (SvROK(sv)) {
IV i;
sv_setnv(sv,Atof(SvPVX_const(sv)) - 1.0); /* punt */
}
+/* this define is used to eliminate a chunk of duplicated but shared logic
+ * it has the suffix __SV_C to signal that it isnt API, and isnt meant to be
+ * used anywhere but here - yves
+ */
+#define PUSH_EXTEND_MORTAL__SV_C(AnSv) \
+ STMT_START { \
+ EXTEND_MORTAL(1); \
+ PL_tmps_stack[++PL_tmps_ix] = (AnSv); \
+ } STMT_END
+
/*
=for apidoc sv_mortalcopy
new_SV(sv);
sv_setsv(sv,oldstr);
- EXTEND_MORTAL(1);
- PL_tmps_stack[++PL_tmps_ix] = sv;
+ PUSH_EXTEND_MORTAL__SV_C(sv);
SvTEMP_on(sv);
return sv;
}
new_SV(sv);
SvFLAGS(sv) = SVs_TEMP;
- EXTEND_MORTAL(1);
- PL_tmps_stack[++PL_tmps_ix] = sv;
+ PUSH_EXTEND_MORTAL__SV_C(sv);
return sv;
}
assert(!(flags & ~(SVf_UTF8|SVs_TEMP)));
new_SV(sv);
sv_setpvn(sv,s,len);
- SvFLAGS(sv) |= (flags & SVf_UTF8);
- return (flags & SVs_TEMP) ? sv_2mortal(sv) : sv;
+
+ /* This code used to a sv_2mortal(), however we now unroll the call to sv_2mortal()
+ * and do what it does outselves here.
+ * Since we have asserted that flags can only have the SVf_UTF8 and/or SVs_TEMP flags
+ * set above we can use it to enable the sv flags directly (bypassing SvTEMP_on), which
+ * in turn means we dont need to mask out the SVf_UTF8 flag below, which means that we
+ * eleminate quite a few steps than it looks - Yves (explaining patch by gfx)
+ */
+
+ SvFLAGS(sv) |= flags;
+
+ if(flags & SVs_TEMP){
+ PUSH_EXTEND_MORTAL__SV_C(sv);
+ }
+
+ return sv;
}
/*
return NULL;
if (SvREADONLY(sv) && SvIMMORTAL(sv))
return sv;
- EXTEND_MORTAL(1);
- PL_tmps_stack[++PL_tmps_ix] = sv;
+ PUSH_EXTEND_MORTAL__SV_C(sv);
SvTEMP_on(sv);
return sv;
}
if (!hash)
PERL_HASH(hash, src, len);
new_SV(sv);
+ /* The logic for this is inlined in S_mro_get_linear_isa_dfs(), so if it
+ changes here, update it there too. */
sv_upgrade(sv, SVt_PV);
SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash));
SvCUR_set(sv, len);
return;
if (!*s) { /* reset ?? searches */
- MAGIC * const mg = mg_find((SV *)stash, PERL_MAGIC_symtab);
+ MAGIC * const mg = mg_find((const SV *)stash, PERL_MAGIC_symtab);
if (mg) {
const U32 count = mg->mg_len / sizeof(PMOP**);
PMOP **pmp = (PMOP**) mg->mg_ptr;
if (!todo[(U8)*HeKEY(entry)])
continue;
- gv = (GV*)HeVAL(entry);
+ gv = MUTABLE_GV(HeVAL(entry));
sv = GvSV(gv);
if (sv) {
if (SvTHINKFIRST(sv)) {
switch (SvTYPE(sv)) {
case SVt_PVIO:
- io = (IO*)sv;
+ io = MUTABLE_IO(sv);
break;
case SVt_PVGV:
if (isGV_with_GP(sv)) {
- gv = (GV*)sv;
+ gv = MUTABLE_GV(sv);
io = GvIO(gv);
if (!io)
Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
case SVt_PVCV:
*st = CvSTASH(sv);
*gvp = NULL;
- return (CV*)sv;
+ return MUTABLE_CV(sv);
case SVt_PVHV:
case SVt_PVAV:
*st = NULL;
return NULL;
case SVt_PVGV:
if (isGV_with_GP(sv)) {
- gv = (GV*)sv;
+ gv = MUTABLE_GV(sv);
*gvp = gv;
*st = GvESTASH(gv);
goto fix_gv;
sv = SvRV(sv);
if (SvTYPE(sv) == SVt_PVCV) {
- cv = (CV*)sv;
+ cv = MUTABLE_CV(sv);
*gvp = NULL;
*st = CvSTASH(cv);
return cv;
}
else if(isGV_with_GP(sv))
- gv = (GV*)sv;
+ gv = MUTABLE_GV(sv);
else
Perl_croak(aTHX_ "Not a subroutine reference");
}
else if (isGV_with_GP(sv)) {
SvGETMAGIC(sv);
- gv = (GV*)sv;
+ gv = MUTABLE_GV(sv);
}
else
gv = gv_fetchsv(sv, lref, SVt_PVCV); /* Calls get magic */
SvGETMAGIC(sv);
if (!SvROK(sv))
return 0;
- sv = (SV*)SvRV(sv);
+ sv = SvRV(sv);
if (!SvOBJECT(sv))
return 0;
return 1;
SvGETMAGIC(sv);
if (!SvROK(sv))
return 0;
- sv = (SV*)SvRV(sv);
+ sv = SvRV(sv);
if (!SvOBJECT(sv))
return 0;
hvname = HvNAME_get(SvSTASH(sv));
if (SvIsCOW(tmpRef))
sv_force_normal_flags(tmpRef, 0);
if (SvREADONLY(tmpRef))
- Perl_croak(aTHX_ PL_no_modify);
+ Perl_croak(aTHX_ "%s", PL_no_modify);
if (SvOBJECT(tmpRef)) {
if (SvTYPE(tmpRef) != SVt_PVIO)
--PL_sv_objcount;
if (SvTYPE(tmpRef) != SVt_PVIO)
++PL_sv_objcount;
SvUPGRADE(tmpRef, SVt_PVMG);
- SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc_simple(stash));
+ SvSTASH_set(tmpRef, MUTABLE_HV(SvREFCNT_inc_simple(stash)));
if (Gv_AMG(stash))
SvAMAGIC_on(sv);
assert(SvTYPE(sv) == SVt_PVGV);
SvFAKE_off(sv);
- gv_efullname3(temp, (GV *) sv, "*");
+ gv_efullname3(temp, MUTABLE_GV(sv), "*");
if (GvGP(sv)) {
- if(GvCVu((GV*)sv) && (stash = GvSTASH((GV*)sv)) && HvNAME_get(stash))
+ if(GvCVu((const GV *)sv) && (stash = GvSTASH(MUTABLE_GV(sv)))
+ && HvNAME_get(stash))
mro_method_changed_in(stash);
- gp_free((GV*)sv);
+ gp_free(MUTABLE_GV(sv));
}
if (GvSTASH(sv)) {
- sv_del_backref((SV*)GvSTASH(sv), sv);
+ sv_del_backref(MUTABLE_SV(GvSTASH(sv)), sv);
GvSTASH(sv) = NULL;
}
GvMULTI_off(sv);
{
PERL_ARGS_ASSERT_SV_VSETPVFN;
- sv_setpvn(sv, "", 0);
+ sv_setpvs(sv, "");
sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
}
}
if (args && patlen == 3 && pat[0] == '%' &&
pat[1] == '-' && pat[2] == 'p') {
- argsv = (SV*)va_arg(*args, void*);
+ argsv = MUTABLE_SV(va_arg(*args, void*));
sv_catsv(sv, argsv);
return;
}
STRLEN esignlen = 0;
const char *eptr = NULL;
+ const char *fmtstart;
STRLEN elen = 0;
SV *vecsv = NULL;
const U8 *vecstr = NULL;
if (q++ >= patend)
break;
+ fmtstart = q;
+
/*
We allow format specification elements in this order:
\d+\$ explicit format parameter index
precis = n;
has_precis = TRUE;
}
- argsv = (SV*)va_arg(*args, void*);
+ argsv = MUTABLE_SV(va_arg(*args, void*));
eptr = SvPV_const(argsv, elen);
if (DO_UTF8(argsv))
is_utf8 = TRUE;
*/
if (sv_derived_from(vecsv, "version")) {
char *version = savesvpv(vecsv);
- if ( hv_exists((HV*)SvRV(vecsv), "alpha", 5 ) ) {
+ if ( hv_exists(MUTABLE_HV(SvRV(vecsv)), "alpha", 5 ) ) {
Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
"vector argument not supported with alpha versions");
goto unknown;
if (args) {
eptr = va_arg(*args, char*);
if (eptr)
-#ifdef MACOS_TRADITIONAL
- /* On MacOS, %#s format is used for Pascal strings */
- if (alt)
- elen = *eptr++;
- else
-#endif
elen = strlen(eptr);
else {
eptr = (char *)nullstr;
else {
eptr = SvPV_const(argsv, elen);
if (DO_UTF8(argsv)) {
- I32 old_precis = precis;
+ STRLEN old_precis = precis;
if (has_precis && precis < elen) {
- I32 p = precis;
+ STRLEN ulen = sv_len_utf8(argsv);
+ I32 p = precis > ulen ? ulen : precis;
sv_pos_u2b(argsv, &p, 0); /* sticks at end */
precis = p;
}
}
string:
- if (has_precis && elen > precis)
+ if (has_precis && precis < elen)
elen = precis;
break;
case 'l': iv = va_arg(*args, long); break;
case 'V': iv = va_arg(*args, IV); break;
default: iv = va_arg(*args, int); break;
+ case 'q':
#ifdef HAS_QUAD
- case 'q': iv = va_arg(*args, Quad_t); break;
+ iv = va_arg(*args, Quad_t); break;
+#else
+ goto unknown;
#endif
}
}
case 'l': iv = (long)tiv; break;
case 'V':
default: iv = tiv; break;
+ case 'q':
#ifdef HAS_QUAD
- case 'q': iv = (Quad_t)tiv; break;
+ iv = (Quad_t)tiv; break;
+#else
+ goto unknown;
#endif
}
}
case 'l': uv = va_arg(*args, unsigned long); break;
case 'V': uv = va_arg(*args, UV); break;
default: uv = va_arg(*args, unsigned); break;
+ case 'q':
#ifdef HAS_QUAD
- case 'q': uv = va_arg(*args, Uquad_t); break;
+ uv = va_arg(*args, Uquad_t); break;
+#else
+ goto unknown;
#endif
}
}
case 'l': uv = (unsigned long)tuv; break;
case 'V':
default: uv = tuv; break;
+ case 'q':
#ifdef HAS_QUAD
- case 'q': uv = (Uquad_t)tuv; break;
+ uv = (Uquad_t)tuv; break;
+#else
+ goto unknown;
#endif
}
}
default: *(va_arg(*args, int*)) = i; break;
case 'l': *(va_arg(*args, long*)) = i; break;
case 'V': *(va_arg(*args, IV*)) = i; break;
+ case 'q':
#ifdef HAS_QUAD
- case 'q': *(va_arg(*args, Quad_t*)) = i; break;
+ *(va_arg(*args, Quad_t*)) = i; break;
+#else
+ goto unknown;
#endif
}
}
SV * const msg = sv_newmortal();
Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ",
(PL_op->op_type == OP_PRTF) ? "" : "s");
- if (c) {
- if (isPRINT(c))
- Perl_sv_catpvf(aTHX_ msg,
- "\"%%%c\"", c & 0xFF);
- else
- Perl_sv_catpvf(aTHX_ msg,
- "\"%%\\%03"UVof"\"",
- (UV)c & 0xFF);
- } else
+ if (fmtstart < patend) {
+ const char * const fmtend = q < patend ? q : patend;
+ const char * f;
+ sv_catpvs(msg, "\"%");
+ for (f = fmtstart; f < fmtend; f++) {
+ if (isPRINT(*f)) {
+ sv_catpvn(msg, f, 1);
+ } else {
+ Perl_sv_catpvf(aTHX_ msg,
+ "\\%03"UVof, (UV)*f & 0xFF);
+ }
+ }
+ sv_catpvs(msg, "\"");
+ } else {
sv_catpvs(msg, "end of string");
+ }
Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, SVfARG(msg)); /* yes, this is reentrant */
}
have = esignlen + zeros + elen;
if (have < zeros)
- Perl_croak_nocontext(PL_memory_wrap);
+ Perl_croak_nocontext("%s", PL_memory_wrap);
need = (have > width ? have : width);
gap = need - have;
if (need >= (((STRLEN)~0) - SvCUR(sv) - dotstrlen - 1))
- Perl_croak_nocontext(PL_memory_wrap);
+ Perl_croak_nocontext("%s", PL_memory_wrap);
SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
p = SvEND(sv);
if (esignlen && fill == '0') {
=cut
-============================================================================*/
+ * =========================================================================*/
#if defined(USE_ITHREADS)
/* Certain cases in Perl_ss_dup have been merged, by relying on the fact
that currently av_dup, gv_dup and hv_dup are the same as sv_dup.
- If this changes, please unmerge ss_dup. */
+ If this changes, please unmerge ss_dup.
+ Likewise, sv_dup_inc_multiple() relies on this fact. */
#define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t))
#define sv_dup_inc_NN(s,t) SvREFCNT_inc_NN(sv_dup(s,t))
-#define av_dup(s,t) (AV*)sv_dup((SV*)s,t)
-#define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t))
-#define hv_dup(s,t) (HV*)sv_dup((SV*)s,t)
-#define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t))
-#define cv_dup(s,t) (CV*)sv_dup((SV*)s,t)
-#define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t))
-#define io_dup(s,t) (IO*)sv_dup((SV*)s,t)
-#define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t))
-#define gv_dup(s,t) (GV*)sv_dup((SV*)s,t)
-#define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t))
+#define av_dup(s,t) MUTABLE_AV(sv_dup((const SV *)s,t))
+#define av_dup_inc(s,t) MUTABLE_AV(SvREFCNT_inc(sv_dup((const SV *)s,t)))
+#define hv_dup(s,t) MUTABLE_HV(sv_dup((const SV *)s,t))
+#define hv_dup_inc(s,t) MUTABLE_HV(SvREFCNT_inc(sv_dup((const SV *)s,t)))
+#define cv_dup(s,t) MUTABLE_CV(sv_dup((const SV *)s,t))
+#define cv_dup_inc(s,t) MUTABLE_CV(SvREFCNT_inc(sv_dup((const SV *)s,t)))
+#define io_dup(s,t) MUTABLE_IO(sv_dup((const SV *)s,t))
+#define io_dup_inc(s,t) MUTABLE_IO(SvREFCNT_inc(sv_dup((const SV *)s,t)))
+#define gv_dup(s,t) MUTABLE_GV(sv_dup((const SV *)s,t))
+#define gv_dup_inc(s,t) MUTABLE_GV(SvREFCNT_inc(sv_dup((const SV *)s,t)))
#define SAVEPV(p) ((p) ? savepv(p) : NULL)
#define SAVEPVN(p,n) ((p) ? savepvn(p,n) : NULL)
Copy(proto->nexttype, parser->nexttype, 5, I32);
parser->nexttoke = proto->nexttoke;
#endif
+
+ /* XXX should clone saved_curcop here, but we aren't passed
+ * proto_perl; so do it in perl_clone_using instead */
+
return parser;
}
ptr_table_store(PL_ptr_table, gp, ret);
/* clone */
- ret->gp_refcnt = 0; /* must be before any other dups! */
+ /* ret->gp_refcnt must be 0 before any other dups are called. We're relying
+ on Newxz() to do this for us. */
ret->gp_sv = sv_dup_inc(gp->gp_sv, param);
ret->gp_io = io_dup_inc(gp->gp_io, param);
ret->gp_form = cv_dup_inc(gp->gp_form, param);
MAGIC *
Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *const param)
{
- MAGIC *mgprev = (MAGIC*)NULL;
- MAGIC *mgret;
+ MAGIC *mgret = NULL;
+ MAGIC **mgprev_p = &mgret;
PERL_ARGS_ASSERT_MG_DUP;
- if (!mg)
- return (MAGIC*)NULL;
- /* look for it in the table first */
- mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
- if (mgret)
- return mgret;
-
for (; mg; mg = mg->mg_moremagic) {
MAGIC *nmg;
- Newxz(nmg, 1, MAGIC);
- if (mgprev)
- mgprev->mg_moremagic = nmg;
- else
- mgret = nmg;
- nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
- nmg->mg_private = mg->mg_private;
- nmg->mg_type = mg->mg_type;
- nmg->mg_flags = mg->mg_flags;
+ Newx(nmg, 1, MAGIC);
+ *mgprev_p = nmg;
+ mgprev_p = &(nmg->mg_moremagic);
+
+ /* There was a comment "XXX copy dynamic vtable?" but as we don't have
+ dynamic vtables, I'm not sure why Sarathy wrote it. The comment dates
+ from the original commit adding Perl_mg_dup() - revision 4538.
+ Similarly there is the annotation "XXX random ptr?" next to the
+ assignment to nmg->mg_ptr. */
+ *nmg = *mg;
+
/* FIXME for plugins
- if (mg->mg_type == PERL_MAGIC_qr) {
- nmg->mg_obj = (SV*)CALLREGDUPE((REGEXP*)mg->mg_obj, param);
+ if (nmg->mg_type == PERL_MAGIC_qr) {
+ nmg->mg_obj = MUTABLE_SV(CALLREGDUPE((REGEXP*)nmg->mg_obj, param));
}
else
*/
- if(mg->mg_type == PERL_MAGIC_backref) {
+ if(nmg->mg_type == PERL_MAGIC_backref) {
/* The backref AV has its reference count deliberately bumped by
1. */
- nmg->mg_obj = SvREFCNT_inc(av_dup_inc((AV*) mg->mg_obj, param));
+ nmg->mg_obj
+ = SvREFCNT_inc(av_dup_inc((const AV *) nmg->mg_obj, param));
}
else {
- nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
- ? sv_dup_inc(mg->mg_obj, param)
- : sv_dup(mg->mg_obj, param);
- }
- nmg->mg_len = mg->mg_len;
- nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
- if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) {
- if (mg->mg_len > 0) {
- nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
- if (mg->mg_type == PERL_MAGIC_overload_table &&
- AMT_AMAGIC((AMT*)mg->mg_ptr))
+ nmg->mg_obj = (nmg->mg_flags & MGf_REFCOUNTED)
+ ? sv_dup_inc(nmg->mg_obj, param)
+ : sv_dup(nmg->mg_obj, param);
+ }
+
+ if (nmg->mg_ptr && nmg->mg_type != PERL_MAGIC_regex_global) {
+ if (nmg->mg_len > 0) {
+ nmg->mg_ptr = SAVEPVN(nmg->mg_ptr, nmg->mg_len);
+ if (nmg->mg_type == PERL_MAGIC_overload_table &&
+ AMT_AMAGIC((AMT*)nmg->mg_ptr))
{
- const AMT * const amtp = (AMT*)mg->mg_ptr;
AMT * const namtp = (AMT*)nmg->mg_ptr;
- I32 i;
- for (i = 1; i < NofAMmeth; i++) {
- namtp->table[i] = cv_dup_inc(amtp->table[i], param);
- }
+ sv_dup_inc_multiple((SV**)(namtp->table),
+ (SV**)(namtp->table), NofAMmeth, param);
}
}
- else if (mg->mg_len == HEf_SVKEY)
- nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param);
+ else if (nmg->mg_len == HEf_SVKEY)
+ nmg->mg_ptr = (char*)sv_dup_inc((const SV *)nmg->mg_ptr, param);
}
- if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) {
+ if ((nmg->mg_flags & MGf_DUP) && nmg->mg_virtual && nmg->mg_virtual->svt_dup) {
CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param);
}
- mgprev = nmg;
}
return mgret;
}
PTR_TBL_t *tbl;
PERL_UNUSED_CONTEXT;
- Newxz(tbl, 1, PTR_TBL_t);
+ Newx(tbl, 1, PTR_TBL_t);
tbl->tbl_max = 511;
tbl->tbl_items = 0;
Newxz(tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
if (SvROK(sstr)) {
SvRV_set(dstr, SvWEAKREF(sstr)
- ? sv_dup(SvRV(sstr), param)
- : sv_dup_inc(SvRV(sstr), param));
+ ? sv_dup(SvRV_const(sstr), param)
+ : sv_dup_inc(SvRV_const(sstr), param));
}
else if (SvPVX_const(sstr)) {
}
else {
/* Some other special case - random pointer */
- SvPV_set(dstr, SvPVX(sstr));
+ SvPV_set(dstr, (char *) SvPVX_const(sstr));
}
}
}
}
}
+/* duplicate a list of SVs. source and dest may point to the same memory. */
+static SV **
+S_sv_dup_inc_multiple(pTHX_ SV *const *source, SV **dest,
+ SSize_t items, CLONE_PARAMS *const param)
+{
+ PERL_ARGS_ASSERT_SV_DUP_INC_MULTIPLE;
+
+ while (items-- > 0) {
+ *dest++ = sv_dup_inc(*source++, param);
+ }
+
+ return dest;
+}
+
/* duplicate an SV of any type (including AV, HV etc) */
SV *
return NULL;
}
/* look for it in the table first */
- dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
+ dstr = MUTABLE_SV(ptr_table_fetch(PL_ptr_table, sstr));
if (dstr)
return dstr;
const HEK * const hvname = HvNAME_HEK(sstr);
if (hvname)
/** don't clone stashes if they already exist **/
- return (SV*)gv_stashpvn(HEK_KEY(hvname), HEK_LEN(hvname), 0);
+ return MUTABLE_SV(gv_stashpvn(HEK_KEY(hvname), HEK_LEN(hvname), 0));
}
}
break;
case SVt_PVGV:
- if (GvUNIQUE((GV*)sstr)) {
- NOOP; /* Do sharing here, and fall through */
- }
case SVt_PVIO:
case SVt_PVFM:
case SVt_PVHV:
if (LvTYPE(dstr) == 't') /* for tie: unrefcnted fake (SV**) */
LvTARG(dstr) = dstr;
else if (LvTYPE(dstr) == 'T') /* for tie: fake HE */
- LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(dstr), 0, param);
+ LvTARG(dstr) = MUTABLE_SV(he_dup((HE*)LvTARG(dstr), 0, param));
else
LvTARG(dstr) = sv_dup_inc(LvTARG(dstr), param);
case SVt_PVGV:
if(isGV_with_GP(sstr)) {
- if (GvNAME_HEK(dstr))
- GvNAME_HEK(dstr) = hek_dup(GvNAME_HEK(dstr), param);
+ GvNAME_HEK(dstr) = hek_dup(GvNAME_HEK(dstr), param);
/* Don't call sv_add_backref here as it's going to be
created as part of the magic cloning of the symbol
table. */
IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(dstr));
break;
case SVt_PVAV:
- if (AvARRAY((AV*)sstr)) {
+ /* avoid cloning an empty array */
+ if (AvARRAY((const AV *)sstr) && AvFILLp((const AV *)sstr) >= 0) {
SV **dst_ary, **src_ary;
- SSize_t items = AvFILLp((AV*)sstr) + 1;
+ SSize_t items = AvFILLp((const AV *)sstr) + 1;
- src_ary = AvARRAY((AV*)sstr);
- Newxz(dst_ary, AvMAX((AV*)sstr)+1, SV*);
+ src_ary = AvARRAY((const AV *)sstr);
+ Newxz(dst_ary, AvMAX((const AV *)sstr)+1, SV*);
ptr_table_store(PL_ptr_table, src_ary, dst_ary);
- AvARRAY((AV*)dstr) = dst_ary;
- AvALLOC((AV*)dstr) = dst_ary;
- if (AvREAL((AV*)sstr)) {
- while (items-- > 0)
- *dst_ary++ = sv_dup_inc(*src_ary++, param);
+ AvARRAY(MUTABLE_AV(dstr)) = dst_ary;
+ AvALLOC((const AV *)dstr) = dst_ary;
+ if (AvREAL((const AV *)sstr)) {
+ dst_ary = sv_dup_inc_multiple(src_ary, dst_ary, items,
+ param);
}
else {
while (items-- > 0)
*dst_ary++ = sv_dup(*src_ary++, param);
}
- items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
+ items = AvMAX((const AV *)sstr) - AvFILLp((const AV *)sstr);
while (items-- > 0) {
*dst_ary++ = &PL_sv_undef;
}
}
else {
- AvARRAY((AV*)dstr) = NULL;
- AvALLOC((AV*)dstr) = (SV**)NULL;
+ AvARRAY(MUTABLE_AV(dstr)) = NULL;
+ AvALLOC((const AV *)dstr) = (SV**)NULL;
+ AvMAX( (const AV *)dstr) = -1;
+ AvFILLp((const AV *)dstr) = -1;
}
break;
case SVt_PVHV:
- if (HvARRAY((HV*)sstr)) {
+ if (HvARRAY((const HV *)sstr)) {
STRLEN i = 0;
const bool sharekeys = !!HvSHAREKEYS(sstr);
XPVHV * const dxhv = (XPVHV*)SvANY(dstr);
SvFLAGS(dstr) |= SVf_OOK;
hvname = saux->xhv_name;
- daux->xhv_name = hvname ? hek_dup(hvname, param) : hvname;
+ daux->xhv_name = hek_dup(hvname, param);
daux->xhv_riter = saux->xhv_riter;
daux->xhv_eiter = saux->xhv_eiter
? he_dup(saux->xhv_eiter,
(bool)!!HvSHAREKEYS(sstr), param) : 0;
+ /* backref array needs refcnt=2; see sv_add_backref */
daux->xhv_backreferences =
saux->xhv_backreferences
- ? (AV*) SvREFCNT_inc(
- sv_dup((SV*)saux->xhv_backreferences, param))
+ ? MUTABLE_AV(SvREFCNT_inc(
+ sv_dup_inc((const SV *)saux->xhv_backreferences, param)))
: 0;
daux->xhv_mro_meta = saux->xhv_mro_meta
}
}
else
- HvARRAY((HV*)dstr) = NULL;
+ HvARRAY(MUTABLE_HV(dstr)) = NULL;
break;
case SVt_PVCV:
if (!(param->flags & CLONEf_COPY_STACKS)) {
CvROOT(dstr) = OpREFCNT_inc(CvROOT(dstr));
OP_REFCNT_UNLOCK;
if (CvCONST(dstr) && CvISXSUB(dstr)) {
- CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(dstr)) ?
- SvREFCNT_inc(CvXSUBANY(dstr).any_ptr) :
- sv_dup_inc((SV *)CvXSUBANY(dstr).any_ptr, param);
+ CvXSUBANY(dstr).any_ptr =
+ sv_dup_inc((const SV *)CvXSUBANY(dstr).any_ptr, param);
}
/* don't dup if copying back - CvGV isn't refcounted, so the
* duped GV may never be freed. A bit of a hack! DAPM */
ncx->blk_loop.oldcomppad);
} else {
ncx->blk_loop.oldcomppad
- = (PAD*)gv_dup((GV*)ncx->blk_loop.oldcomppad, param);
+ = (PAD*)gv_dup((const GV *)ncx->blk_loop.oldcomppad,
+ param);
}
break;
case CXt_FORMAT:
const I32 max = proto_perl->Isavestack_max;
I32 ix = proto_perl->Isavestack_ix;
ANY *nss;
- SV *sv;
- GV *gv;
- AV *av;
- HV *hv;
+ const SV *sv;
+ const GV *gv;
+ const AV *av;
+ const HV *hv;
void* ptr;
int intval;
long longval;
TOPINT(nss,ix) = type;
switch (type) {
case SAVEt_HELEM: /* hash element */
- sv = (SV*)POPPTR(ss,ix);
+ sv = (const SV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup_inc(sv, param);
/* fall through */
case SAVEt_ITEM: /* normal string */
case SAVEt_SV: /* scalar reference */
- sv = (SV*)POPPTR(ss,ix);
+ sv = (const SV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup_inc(sv, param);
/* fall through */
case SAVEt_FREESV:
case SAVEt_MORTALIZESV:
- sv = (SV*)POPPTR(ss,ix);
+ sv = (const SV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup_inc(sv, param);
break;
case SAVEt_SHARED_PVREF: /* char* in shared space */
break;
case SAVEt_GENERIC_SVREF: /* generic sv */
case SAVEt_SVREF: /* scalar reference */
- sv = (SV*)POPPTR(ss,ix);
+ sv = (const SV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup_inc(sv, param);
ptr = POPPTR(ss,ix);
TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
break;
case SAVEt_HV: /* hash reference */
case SAVEt_AV: /* array reference */
- sv = (SV*) POPPTR(ss,ix);
+ sv = (const SV *) POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup_inc(sv, param);
/* fall through */
case SAVEt_COMPPAD:
case SAVEt_NSTAB:
- sv = (SV*) POPPTR(ss,ix);
+ sv = (const SV *) POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup(sv, param);
break;
case SAVEt_INT: /* int reference */
case SAVEt_SPTR: /* SV* reference */
ptr = POPPTR(ss,ix);
TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
- sv = (SV*)POPPTR(ss,ix);
+ sv = (const SV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup(sv, param);
break;
case SAVEt_VPTR: /* random* reference */
gp = (GP*)POPPTR(ss,ix);
TOPPTR(nss,ix) = gp = gp_dup(gp, param);
(void)GpREFCNT_inc(gp);
- gv = (GV*)POPPTR(ss,ix);
+ gv = (const GV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = gv_dup_inc(gv, param);
break;
case SAVEt_FREEOP:
else
TOPPTR(nss,ix) = NULL;
break;
- case SAVEt_FREEPV:
- c = (char*)POPPTR(ss,ix);
- TOPPTR(nss,ix) = pv_dup_inc(c);
- break;
case SAVEt_DELETE:
- hv = (HV*)POPPTR(ss,ix);
+ hv = (const HV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = hv_dup_inc(hv, param);
+ i = POPINT(ss,ix);
+ TOPINT(nss,ix) = i;
+ /* Fall through */
+ case SAVEt_FREEPV:
c = (char*)POPPTR(ss,ix);
TOPPTR(nss,ix) = pv_dup_inc(c);
- /* fall through */
+ break;
case SAVEt_STACK_POS: /* Position on Perl stack */
i = POPINT(ss,ix);
TOPINT(nss,ix) = i;
ix -= i;
break;
case SAVEt_AELEM: /* array element */
- sv = (SV*)POPPTR(ss,ix);
+ sv = (const SV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup_inc(sv, param);
i = POPINT(ss,ix);
TOPINT(nss,ix) = i;
- av = (AV*)POPPTR(ss,ix);
+ av = (const AV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = av_dup_inc(av, param);
break;
case SAVEt_OP:
TOPPTR(nss,ix) = ptr;
break;
case SAVEt_HINTS:
- i = POPINT(ss,ix);
- TOPINT(nss,ix) = i;
ptr = POPPTR(ss,ix);
if (ptr) {
HINTS_REFCNT_LOCK;
HINTS_REFCNT_UNLOCK;
}
TOPPTR(nss,ix) = ptr;
+ i = POPINT(ss,ix);
+ TOPINT(nss,ix) = i;
if (i & HINT_LOCALIZE_HH) {
- hv = (HV*)POPPTR(ss,ix);
+ hv = (const HV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = hv_dup_inc(hv, param);
}
break;
TOPLONG(nss,ix) = longval;
ptr = POPPTR(ss,ix);
TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
- sv = (SV*)POPPTR(ss,ix);
+ sv = (const SV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup_inc(sv, param);
break;
case SAVEt_BOOL:
TOPINT(nss,ix) = i;
i = POPINT(ss,ix);
TOPINT(nss,ix) = i;
- sv = (SV*)POPPTR(ss,ix);
+ sv = (const SV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = sv_dup(sv, param);
break;
case SAVEt_RE_STATE:
static void
do_mark_cloneable_stash(pTHX_ SV *const sv)
{
- const HEK * const hvname = HvNAME_HEK((HV*)sv);
+ const HEK * const hvname = HvNAME_HEK((const HV *)sv);
if (hvname) {
- GV* const cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0);
+ GV* const cloner = gv_fetchmethod_autoload(MUTABLE_HV(sv), "CLONE_SKIP", 0);
SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */
if (cloner && GvCV(cloner)) {
dSP;
PUSHMARK(SP);
mXPUSHs(newSVhek(hvname));
PUTBACK;
- call_sv((SV*)GvCV(cloner), G_SCALAR);
+ call_sv(MUTABLE_SV(GvCV(cloner)), G_SCALAR);
SPAGAIN;
status = POPu;
PUTBACK;
#endif
PL_encoding = sv_dup(proto_perl->Iencoding, param);
- sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
- sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
- sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
+ sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
+ sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
+ sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
/* RE engine related */
PL_regex_pad = AvARRAY(PL_regex_padav);
/* shortcuts to various I/O objects */
+ PL_ofsgv = gv_dup(proto_perl->Iofsgv, param);
PL_stdingv = gv_dup(proto_perl->Istdingv, param);
PL_stderrgv = gv_dup(proto_perl->Istderrgv, param);
PL_defgv = gv_dup(proto_perl->Idefgv, param);
PL_parser = parser_dup(proto_perl->Iparser, param);
+ /* XXX this only works if the saved cop has already been cloned */
+ if (proto_perl->Iparser) {
+ PL_parser->saved_curcop = (COP*)any_dup(
+ proto_perl->Iparser->saved_curcop,
+ proto_perl);
+ }
+
PL_subline = proto_perl->Isubline;
PL_subname = sv_dup_inc(proto_perl->Isubname, param);
/* utf8 character classes */
PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param);
- PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param);
PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param);
PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param);
PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param);
PL_glob_index = proto_perl->Iglob_index;
PL_srand_called = proto_perl->Isrand_called;
- PL_bitcount = NULL; /* reinits on demand */
if (proto_perl->Ipsig_pend) {
Newxz(PL_psig_pend, SIG_SIZE, int);
PL_psig_pend = (int*)NULL;
}
- if (proto_perl->Ipsig_ptr) {
- Newxz(PL_psig_ptr, SIG_SIZE, SV*);
- Newxz(PL_psig_name, SIG_SIZE, SV*);
- for (i = 1; i < SIG_SIZE; i++) {
- PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param);
- PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param);
- }
+ if (proto_perl->Ipsig_name) {
+ Newx(PL_psig_name, 2 * SIG_SIZE, SV*);
+ sv_dup_inc_multiple(proto_perl->Ipsig_name, PL_psig_name, 2 * SIG_SIZE,
+ param);
+ PL_psig_ptr = PL_psig_name + SIG_SIZE;
}
else {
PL_psig_ptr = (SV**)NULL;
PL_tmps_ix = proto_perl->Itmps_ix;
PL_tmps_max = proto_perl->Itmps_max;
PL_tmps_floor = proto_perl->Itmps_floor;
- Newxz(PL_tmps_stack, PL_tmps_max, SV*);
- i = 0;
- while (i <= PL_tmps_ix) {
- PL_tmps_stack[i] = sv_dup_inc(proto_perl->Itmps_stack[i], param);
- ++i;
- }
+ Newx(PL_tmps_stack, PL_tmps_max, SV*);
+ sv_dup_inc_multiple(proto_perl->Itmps_stack, PL_tmps_stack, PL_tmps_ix,
+ param);
/* next PUSHMARK() sets *(PL_markstack_ptr+1) */
i = proto_perl->Imarkstack_max - proto_perl->Imarkstack;
* orphaned
*/
for (i = 0; i<= proto_perl->Itmps_ix; i++) {
- SV * const nsv = (SV*)ptr_table_fetch(PL_ptr_table,
- proto_perl->Itmps_stack[i]);
+ SV * const nsv = MUTABLE_SV(ptr_table_fetch(PL_ptr_table,
+ proto_perl->Itmps_stack[i]));
if (nsv && !SvREFCNT(nsv)) {
- EXTEND_MORTAL(1);
- PL_tmps_stack[++PL_tmps_ix] = SvREFCNT_inc_simple(nsv);
+ PUSH_EXTEND_MORTAL__SV_C(SvREFCNT_inc_simple(nsv));
}
}
}
PL_curpm = proto_perl->Icurpm; /* XXX No PMOP ref count */
PL_rs = sv_dup_inc(proto_perl->Irs, param);
PL_last_in_gv = gv_dup(proto_perl->Ilast_in_gv, param);
- PL_ofs_sv = sv_dup_inc(proto_perl->Iofs_sv, param);
PL_defoutgv = gv_dup_inc(proto_perl->Idefoutgv, param);
PL_chopset = proto_perl->Ichopset; /* XXX never deallocated */
PL_toptarget = sv_dup_inc(proto_perl->Itoptarget, param);
/* Pluggable optimizer */
PL_peepp = proto_perl->Ipeepp;
+ /* op_free() hook */
+ PL_opfreehook = proto_perl->Iopfreehook;
PL_stashcache = newHV();
PTR2UV(PL_watchok));
}
- if (!(flags & CLONEf_KEEP_PTR_TABLE)) {
- ptr_table_free(PL_ptr_table);
- PL_ptr_table = NULL;
- }
+ PL_registered_mros = hv_dup_inc(proto_perl->Iregistered_mros, param);
/* Call the ->CLONE method, if it exists, for each of the stashes
identified by sv_dup() above.
*/
while(av_len(param->stashes) != -1) {
- HV* const stash = (HV*) av_shift(param->stashes);
+ HV* const stash = MUTABLE_HV(av_shift(param->stashes));
GV* const cloner = gv_fetchmethod_autoload(stash, "CLONE", 0);
if (cloner && GvCV(cloner)) {
dSP;
PUSHMARK(SP);
mXPUSHs(newSVhek(HvNAME_HEK(stash)));
PUTBACK;
- call_sv((SV*)GvCV(cloner), G_DISCARD);
+ call_sv(MUTABLE_SV(GvCV(cloner)), G_DISCARD);
FREETMPS;
LEAVE;
}
}
+ if (!(flags & CLONEf_KEEP_PTR_TABLE)) {
+ ptr_table_free(PL_ptr_table);
+ PL_ptr_table = NULL;
+ }
+
+
SvREFCNT_dec(param->stashes);
/* orphaned? eg threads->new inside BEGIN or use */
* If so, return a mortal copy of the key. */
STATIC SV*
-S_find_hash_subscript(pTHX_ HV *hv, SV* val)
+S_find_hash_subscript(pTHX_ const HV *const hv, const SV *const val)
{
dVAR;
register HE **array;
* If so, return the index, otherwise return -1. */
STATIC I32
-S_find_array_subscript(pTHX_ AV *av, SV* val)
+S_find_array_subscript(pTHX_ const AV *const av, const SV *const val)
{
dVAR;
#define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */
STATIC SV*
-S_varname(pTHX_ GV *gv, const char gvtype, PADOFFSET targ,
- SV* keyname, I32 aindex, int subscript_type)
+S_varname(pTHX_ const GV *const gv, const char gvtype, PADOFFSET targ,
+ const SV *const keyname, I32 aindex, int subscript_type)
{
SV * const name = sv_newmortal();
if (!cv || !CvPADLIST(cv))
return NULL;
- av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE));
+ av = MUTABLE_AV((*av_fetch(CvPADLIST(cv), 0, FALSE)));
sv = *av_fetch(av, targ, FALSE);
sv_setpvn(name, SvPV_nolen_const(sv), SvCUR(sv));
}
*/
STATIC SV *
-S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match)
+S_find_uninit_var(pTHX_ const OP *const obase, const SV *const uninit_sv,
+ bool match)
{
dVAR;
SV *sv;
- AV *av;
- GV *gv;
- OP *o, *o2, *kid;
+ const GV *gv;
+ const OP *o, *o2, *kid;
if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef ||
uninit_sv == &PL_sv_placeholder)))
gv = cGVOPx_gv(cUNOPx(obase)->op_first);
if (!gv)
break;
- sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv);
+ sv = hash ? MUTABLE_SV(GvHV(gv)): MUTABLE_SV(GvAV(gv));
}
else /* @{expr}, %{expr} */
return find_uninit_var(cUNOPx(obase)->op_first,
/* attempt to find a match within the aggregate */
if (hash) {
- keysv = find_hash_subscript((HV*)sv, uninit_sv);
+ keysv = find_hash_subscript((const HV*)sv, uninit_sv);
if (keysv)
subscript_type = FUV_SUBSCRIPT_HASH;
}
else {
- index = find_array_subscript((AV*)sv, uninit_sv);
+ index = find_array_subscript((const AV *)sv, uninit_sv);
if (index >= 0)
subscript_type = FUV_SUBSCRIPT_ARRAY;
}
if (obase->op_flags & OPf_SPECIAL) { /* lexical array */
if (match) {
SV **svp;
- av = (AV*)PAD_SV(obase->op_targ);
+ AV *av = MUTABLE_AV(PAD_SV(obase->op_targ));
if (!av || SvRMAGICAL(av))
break;
svp = av_fetch(av, (I32)obase->op_private, FALSE);
break;
if (match) {
SV **svp;
- av = GvAV(gv);
+ AV *const av = GvAV(gv);
if (!av || SvRMAGICAL(av))
break;
svp = av_fetch(av, (I32)obase->op_private, FALSE);
gv = cGVOPx_gv(cUNOPo->op_first);
if (!gv)
break;
- sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv);
+ sv = o->op_type
+ == OP_RV2HV ? MUTABLE_SV(GvHV(gv)) : MUTABLE_SV(GvAV(gv));
}
if (!sv)
break;
if (SvMAGICAL(sv))
break;
if (obase->op_type == OP_HELEM) {
- HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0);
+ HE* he = hv_fetch_ent(MUTABLE_HV(sv), cSVOPx_sv(kid), 0, 0);
if (!he || HeVAL(he) != uninit_sv)
break;
}
else {
- SV * const * const svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE);
+ SV * const * const svp = av_fetch(MUTABLE_AV(sv), SvIV(cSVOPx_sv(kid)), FALSE);
if (!svp || *svp != uninit_sv)
break;
}
/* index is an expression;
* attempt to find a match within the aggregate */
if (obase->op_type == OP_HELEM) {
- SV * const keysv = find_hash_subscript((HV*)sv, uninit_sv);
+ SV * const keysv = find_hash_subscript((const HV*)sv, uninit_sv);
if (keysv)
return varname(gv, '%', o->op_targ,
keysv, 0, FUV_SUBSCRIPT_HASH);
}
else {
- const I32 index = find_array_subscript((AV*)sv, uninit_sv);
+ const I32 index
+ = find_array_subscript((const AV *)sv, uninit_sv);
if (index >= 0)
return varname(gv, '@', o->op_targ,
NULL, index, FUV_SUBSCRIPT_ARRAY);
: DEFSV))
{
sv = sv_newmortal();
- sv_setpvn(sv, "$_", 2);
+ sv_setpvs(sv, "$_");
return sv;
}
}
Need a better fix at dome point. DAPM 11/2007 */
break;
+ case OP_FLIP:
+ case OP_FLOP:
+ {
+ GV * const gv = gv_fetchpvs(".", GV_NOTQUAL, SVt_PV);
+ if (gv && GvSV(gv) == uninit_sv)
+ return newSVpvs_flags("$.", SVs_TEMP);
+ goto do_op;
+ }
case OP_POS:
/* def-ness of rval pos() is independent of the def-ness of its arg */
*/
void
-Perl_report_uninit(pTHX_ SV* uninit_sv)
+Perl_report_uninit(pTHX_ const SV *uninit_sv)
{
dVAR;
if (PL_op) {
https://perl5.git.perl.org / perl5.git / blobdiff