=for hackers
Found in file mathoms.c
+=item pack_cat
+X<pack_cat>
+
+The engine implementing pack() Perl function. Note: parameters next_in_list and
+flags are not used. This call should not be used; use packlist instead.
+
+ void pack_cat(SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist, SV ***next_in_list, U32 flags)
+
+=for hackers
+Found in file mathoms.c
+
=item sv_2pvbyte_nolen
X<sv_2pvbyte_nolen>
=for hackers
Found in file mathoms.c
+=item sv_usepvn
+X<sv_usepvn>
+
+Tells an SV to use C<ptr> to find its string value. Implemented by
+calling C<sv_usepvn_flags> with C<flags> of 0, hence does not handle 'set'
+magic. See C<sv_usepvn_flags>.
+
+ void sv_usepvn(SV* sv, char* ptr, STRLEN len)
+
+=for hackers
+Found in file mathoms.c
+
+=item sv_usepvn_mg
+X<sv_usepvn_mg>
+
+Like C<sv_usepvn>, but also handles 'set' magic.
+
+ void sv_usepvn_mg(SV *sv, char *ptr, STRLEN len)
+
+=for hackers
+Found in file mathoms.c
+
=item sv_uv
X<sv_uv>
=for hackers
Found in file mathoms.c
+=item unpack_str
+X<unpack_str>
+
+The engine implementing unpack() Perl function. Note: parameters strbeg, new_s
+and ocnt are not used. This call should not be used, use unpackstring instead.
+
+ I32 unpack_str(const char *pat, const char *patend, const char *s, const char *strbeg, const char *strend, char **new_s, I32 ocnt, U32 flags)
+
+=for hackers
+Found in file mathoms.c
+
=back
=for hackers
Found in file pp_pack.c
-=item pack_cat
-X<pack_cat>
-
-The engine implementing pack() Perl function. Note: parameters next_in_list and
-flags are not used. This call should not be used; use packlist instead.
-
- void pack_cat(SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist, SV ***next_in_list, U32 flags)
-
-=for hackers
-Found in file pp_pack.c
-
=item unpackstring
X<unpackstring>
=for hackers
Found in file pp_pack.c
-=item unpack_str
-X<unpack_str>
-
-The engine implementing unpack() Perl function. Note: parameters strbeg, new_s
-and ocnt are not used. This call should not be used, use unpackstring instead.
-
- I32 unpack_str(const char *pat, const char *patend, const char *s, const char *strbeg, const char *strend, char **new_s, I32 ocnt, U32 flags)
-
-=for hackers
-Found in file pp_pack.c
-
=back
=item HeSVKEY
X<HeSVKEY>
-Returns the key as an C<SV*>, or C<Nullsv> if the hash entry does not
+Returns the key as an C<SV*>, or C<NULL> if the hash entry does not
contain an C<SV*> key.
SV* HeSVKEY(HE* he)
=item Poison
X<Poison>
-Fill up memory with a pattern (byte 0xAB over and over again) that
-hopefully catches attempts to access uninitialized memory.
+PoisonWith(0xEF) for catching access to freed memory.
void Poison(void* dest, int nitems, type)
=for hackers
Found in file handy.h
+=item PoisonNew
+X<PoisonNew>
+
+PoisonWith(0xAB) for catching access to allocated but uninitialized memory.
+
+ void PoisonNew(void* dest, int nitems, type)
+
+=for hackers
+Found in file handy.h
+
+=item PoisonWith
+X<PoisonWith>
+
+Fill up memory with a byte pattern (a byte repeated over and over
+again) that hopefully catches attempts to access uninitialized memory.
+
+ void PoisonWith(void* dest, int nitems, type, U8 byte)
+
+=for hackers
+Found in file handy.h
+
=item Renew
X<Renew>
Perl's version of what C<strndup()> would be if it existed. Returns a
pointer to a newly allocated string which is a duplicate of the first
-C<len> bytes from C<pv>. The memory allocated for the new string can be
-freed with the C<Safefree()> function.
+C<len> bytes from C<pv>, plus a trailing NUL byte. The memory allocated for
+the new string can be freed with the C<Safefree()> function.
char* savepvn(const char* pv, I32 len)
X<fbm_instr>
Returns the location of the SV in the string delimited by C<str> and
-C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
+C<strend>. It returns C<NULL> if the string can't be found. The C<sv>
does not have to be fbm_compiled, but the search will not be as fast
then.
=item newXS
X<newXS>
-Used by C<xsubpp> to hook up XSUBs as Perl subs.
+Used by C<xsubpp> to hook up XSUBs as Perl subs. I<filename> needs to be
+static storage, as it is used directly as CvFILE(), without a copy being made.
=for hackers
Found in file op.c
=for hackers
Found in file perl.c
-=item looks_like_number
-X<looks_like_number>
-
-Test if the content of an SV looks like a number (or is a number).
-C<Inf> and C<Infinity> are treated as numbers (so will not issue a
-non-numeric warning), even if your atof() doesn't grok them.
-
- I32 looks_like_number(SV* sv)
-
-=for hackers
-Found in file sv.c
-
=item newRV_inc
X<newRV_inc>
=for hackers
Found in file sv.h
-=item newRV_noinc
-X<newRV_noinc>
-
-Creates an RV wrapper for an SV. The reference count for the original
-SV is B<not> incremented.
-
- SV* newRV_noinc(SV *sv)
-
-=for hackers
-Found in file sv.c
-
-=item newSV
-X<newSV>
-
-Creates a new SV. A non-zero C<len> parameter indicates the number of
-bytes of preallocated string space the SV should have. An extra byte for a
-trailing NUL is also reserved. (SvPOK is not set for the SV even if string
-space is allocated.) The reference count for the new SV is set to 1.
-
-In 5.9.3, newSV() replaces the older NEWSV() API, and drops the first
-parameter, I<x>, a debug aid which allowed callers to identify themselves.
-This aid has been superseded by a new build option, PERL_MEM_LOG (see
-L<perlhack/PERL_MEM_LOG>). The older API is still there for use in XS
-modules supporting older perls.
-
- SV* newSV(STRLEN len)
-
-=for hackers
-Found in file sv.c
-
-=item newSVhek
-X<newSVhek>
-
-Creates a new SV from the hash key structure. It will generate scalars that
-point to the shared string table where possible. Returns a new (undefined)
-SV if the hek is NULL.
-
- SV* newSVhek(const HEK *hek)
-
-=for hackers
-Found in file sv.c
-
-=item newSViv
-X<newSViv>
-
-Creates a new SV and copies an integer into it. The reference count for the
-SV is set to 1.
-
- SV* newSViv(IV i)
-
-=for hackers
-Found in file sv.c
-
-=item newSVnv
-X<newSVnv>
-
-Creates a new SV and copies a floating point value into it.
-The reference count for the SV is set to 1.
-
- SV* newSVnv(NV n)
-
-=for hackers
-Found in file sv.c
-
-=item newSVpv
-X<newSVpv>
-
-Creates a new SV and copies a string into it. The reference count for the
-SV is set to 1. If C<len> is zero, Perl will compute the length using
-strlen(). For efficiency, consider using C<newSVpvn> instead.
-
- SV* newSVpv(const char* s, STRLEN len)
-
-=for hackers
-Found in file sv.c
-
-=item newSVpvf
-X<newSVpvf>
-
-Creates a new SV and initializes it with the string formatted like
-C<sprintf>.
-
- SV* newSVpvf(const char* pat, ...)
-
-=for hackers
-Found in file sv.c
-
-=item newSVpvn
-X<newSVpvn>
-
-Creates a new SV and copies a string into it. The reference count for the
-SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
-string. You are responsible for ensuring that the source string is at least
-C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined.
-
- SV* newSVpvn(const char* s, STRLEN len)
-
-=for hackers
-Found in file sv.c
-
-=item newSVpvn_share
-X<newSVpvn_share>
-
-Creates a new SV with its SvPVX_const pointing to a shared string in the string
-table. If the string does not already exist in the table, it is created
-first. Turns on READONLY and FAKE. The string's hash is stored in the UV
-slot of the SV; if the C<hash> parameter is non-zero, that value is used;
-otherwise the hash is computed. The idea here is that as the string table
-is used for shared hash keys these strings will have SvPVX_const == HeKEY and
-hash lookup will avoid string compare.
-
- SV* newSVpvn_share(const char* s, I32 len, U32 hash)
-
-=for hackers
-Found in file sv.c
-
-=item newSVrv
-X<newSVrv>
-
-Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
-it will be upgraded to one. If C<classname> is non-null then the new SV will
-be blessed in the specified package. The new SV is returned and its
-reference count is 1.
-
- SV* newSVrv(SV* rv, const char* classname)
-
-=for hackers
-Found in file sv.c
-
-=item newSVsv
-X<newSVsv>
-
-Creates a new SV which is an exact duplicate of the original SV.
-(Uses C<sv_setsv>).
-
- SV* newSVsv(SV* old)
-
-=for hackers
-Found in file sv.c
-
-=item newSVuv
-X<newSVuv>
-
-Creates a new SV and copies an unsigned integer into it.
-The reference count for the SV is set to 1.
-
- SV* newSVuv(UV u)
-
-=for hackers
-Found in file sv.c
-
=item SvCUR
X<SvCUR>
=for hackers
Found in file sv.h
+=item SvGAMAGIC
+X<SvGAMAGIC>
+
+Returns true if the SV has get magic or overloading. If either is true then
+the scalar is active data, and has the potential to return a new value every
+time it is accessed. Hence you must be careful to only read it once per user
+logical operation and work with that returned value. If neither is true then
+the scalar's value cannot change unless written to.
+
+ char* SvGAMAGIC(SV* sv)
+
+=for hackers
+Found in file sv.h
+
=item SvGROW
X<SvGROW>
=for hackers
Found in file sv.h
-=item SvROK
-X<SvROK>
+=item SvREFCNT_inc_NN
+X<SvREFCNT_inc_NN>
-Tests if the SV is an RV.
+Same as SvREFCNT_inc, but can only be used if you know I<sv>
+is not NULL. Since we don't have to check the NULLness, it's faster
+and smaller.
- bool SvROK(SV* sv)
+ SV* SvREFCNT_inc_NN(SV* sv)
=for hackers
Found in file sv.h
-=item SvROK_off
-X<SvROK_off>
+=item SvREFCNT_inc_simple
+X<SvREFCNT_inc_simple>
-Unsets the RV status of an SV.
+Same as SvREFCNT_inc, but can only be used with simple variables, not
+expressions or pointer dereferences. Since we don't have to store a
+temporary value, it's faster.
- void SvROK_off(SV* sv)
+ SV* SvREFCNT_inc_simple(SV* sv)
=for hackers
Found in file sv.h
-=item SvROK_on
-X<SvROK_on>
+=item SvREFCNT_inc_simple_NN
+X<SvREFCNT_inc_simple_NN>
-Tells an SV that it is an RV.
+Same as SvREFCNT_inc_simple, but can only be used if you know I<sv>
+is not NULL. Since we don't have to check the NULLness, it's faster
+and smaller.
- void SvROK_on(SV* sv)
+ SV* SvREFCNT_inc_simple_NN(SV* sv)
=for hackers
Found in file sv.h
-=item SvRV
+=item SvREFCNT_inc_simple_void
+X<SvREFCNT_inc_simple_void>
+
+Same as SvREFCNT_inc_simple, but can only be used if you don't need the
+return value. The macro doesn't need to return a meaningful value.
+
+ SV* SvREFCNT_inc_simple_void(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvREFCNT_inc_void
+X<SvREFCNT_inc_void>
+
+Same as SvREFCNT_inc, but can only be used if you don't need the
+return value. The macro doesn't need to return a meaningful value.
+
+ SV* SvREFCNT_inc_void(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvREFCNT_inc_void_NN
+X<SvREFCNT_inc_void_NN>
+
+Same as SvREFCNT_inc, but can only be used if you don't need the return
+value, and you know that I<sv> is not NULL. The macro doesn't need
+to return a meaningful value, or check for NULLness, so it's smaller
+and faster.
+
+ SV* SvREFCNT_inc_void_NN(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvROK
+X<SvROK>
+
+Tests if the SV is an RV.
+
+ bool SvROK(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvROK_off
+X<SvROK_off>
+
+Unsets the RV status of an SV.
+
+ void SvROK_off(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvROK_on
+X<SvROK_on>
+
+Tells an SV that it is an RV.
+
+ void SvROK_on(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvRV
X<SvRV>
Dereferences an RV to return the SV.
=for hackers
Found in file sv.h
+=item sv_catpvn_nomg
+X<sv_catpvn_nomg>
+
+Like C<sv_catpvn> but doesn't process magic.
+
+ void sv_catpvn_nomg(SV* sv, const char* ptr, STRLEN len)
+
+=for hackers
+Found in file sv.h
+
+=item sv_catsv_nomg
+X<sv_catsv_nomg>
+
+Like C<sv_catsv> but doesn't process magic.
+
+ void sv_catsv_nomg(SV* dsv, SV* ssv)
+
+=for hackers
+Found in file sv.h
+
+=item sv_derived_from
+X<sv_derived_from>
+
+Returns a boolean indicating whether the SV is derived from the specified
+class. This is the function that implements C<UNIVERSAL::isa>. It works
+for class names as well as for objects.
+
+ bool sv_derived_from(SV* sv, const char* name)
+
+=for hackers
+Found in file universal.c
+
+=item sv_report_used
+X<sv_report_used>
+
+Dump the contents of all SVs not yet freed. (Debugging aid).
+
+ void sv_report_used()
+
+=for hackers
+Found in file sv.c
+
+=item sv_setsv_nomg
+X<sv_setsv_nomg>
+
+Like C<sv_setsv> but doesn't process magic.
+
+ void sv_setsv_nomg(SV* dsv, SV* ssv)
+
+=for hackers
+Found in file sv.h
+
+
+=back
+
+=head1 SV-Body Allocation
+
+=over 8
+
+=item looks_like_number
+X<looks_like_number>
+
+Test if the content of an SV looks like a number (or is a number).
+C<Inf> and C<Infinity> are treated as numbers (so will not issue a
+non-numeric warning), even if your atof() doesn't grok them.
+
+ I32 looks_like_number(SV* sv)
+
+=for hackers
+Found in file sv.c
+
+=item newRV_noinc
+X<newRV_noinc>
+
+Creates an RV wrapper for an SV. The reference count for the original
+SV is B<not> incremented.
+
+ SV* newRV_noinc(SV* sv)
+
+=for hackers
+Found in file sv.c
+
+=item newSV
+X<newSV>
+
+Creates a new SV. A non-zero C<len> parameter indicates the number of
+bytes of preallocated string space the SV should have. An extra byte for a
+trailing NUL is also reserved. (SvPOK is not set for the SV even if string
+space is allocated.) The reference count for the new SV is set to 1.
+
+In 5.9.3, newSV() replaces the older NEWSV() API, and drops the first
+parameter, I<x>, a debug aid which allowed callers to identify themselves.
+This aid has been superseded by a new build option, PERL_MEM_LOG (see
+L<perlhack/PERL_MEM_LOG>). The older API is still there for use in XS
+modules supporting older perls.
+
+ SV* newSV(STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSVhek
+X<newSVhek>
+
+Creates a new SV from the hash key structure. It will generate scalars that
+point to the shared string table where possible. Returns a new (undefined)
+SV if the hek is NULL.
+
+ SV* newSVhek(const HEK *hek)
+
+=for hackers
+Found in file sv.c
+
+=item newSViv
+X<newSViv>
+
+Creates a new SV and copies an integer into it. The reference count for the
+SV is set to 1.
+
+ SV* newSViv(IV i)
+
+=for hackers
+Found in file sv.c
+
+=item newSVnv
+X<newSVnv>
+
+Creates a new SV and copies a floating point value into it.
+The reference count for the SV is set to 1.
+
+ SV* newSVnv(NV n)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpv
+X<newSVpv>
+
+Creates a new SV and copies a string into it. The reference count for the
+SV is set to 1. If C<len> is zero, Perl will compute the length using
+strlen(). For efficiency, consider using C<newSVpvn> instead.
+
+ SV* newSVpv(const char* s, STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvf
+X<newSVpvf>
+
+Creates a new SV and initializes it with the string formatted like
+C<sprintf>.
+
+ SV* newSVpvf(const char* pat, ...)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvn
+X<newSVpvn>
+
+Creates a new SV and copies a string into it. The reference count for the
+SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
+string. You are responsible for ensuring that the source string is at least
+C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined.
+
+ SV* newSVpvn(const char* s, STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvn_share
+X<newSVpvn_share>
+
+Creates a new SV with its SvPVX_const pointing to a shared string in the string
+table. If the string does not already exist in the table, it is created
+first. Turns on READONLY and FAKE. The string's hash is stored in the UV
+slot of the SV; if the C<hash> parameter is non-zero, that value is used;
+otherwise the hash is computed. The idea here is that as the string table
+is used for shared hash keys these strings will have SvPVX_const == HeKEY and
+hash lookup will avoid string compare.
+
+ SV* newSVpvn_share(const char* s, I32 len, U32 hash)
+
+=for hackers
+Found in file sv.c
+
+=item newSVrv
+X<newSVrv>
+
+Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
+it will be upgraded to one. If C<classname> is non-null then the new SV will
+be blessed in the specified package. The new SV is returned and its
+reference count is 1.
+
+ SV* newSVrv(SV* rv, const char* classname)
+
+=for hackers
+Found in file sv.c
+
+=item newSVsv
+X<newSVsv>
+
+Creates a new SV which is an exact duplicate of the original SV.
+(Uses C<sv_setsv>).
+
+ SV* newSVsv(SV* old)
+
+=for hackers
+Found in file sv.c
+
+=item newSVuv
+X<newSVuv>
+
+Creates a new SV and copies an unsigned integer into it.
+The reference count for the SV is set to 1.
+
+ SV* newSVuv(UV u)
+
+=for hackers
+Found in file sv.c
+
=item sv_2bool
X<sv_2bool>
=for hackers
Found in file sv.c
-=item sv_catpvn_nomg
-X<sv_catpvn_nomg>
-
-Like C<sv_catpvn> but doesn't process magic.
-
- void sv_catpvn_nomg(SV* sv, const char* ptr, STRLEN len)
-
-=for hackers
-Found in file sv.h
-
=item sv_catpv_mg
X<sv_catpv_mg>
=for hackers
Found in file sv.c
-=item sv_catsv_nomg
-X<sv_catsv_nomg>
-
-Like C<sv_catsv> but doesn't process magic.
-
- void sv_catsv_nomg(SV* dsv, SV* ssv)
-
-=for hackers
-Found in file sv.h
-
=item sv_chop
X<sv_chop>
=for hackers
Found in file sv.c
-=item sv_derived_from
-X<sv_derived_from>
-
-Returns a boolean indicating whether the SV is derived from the specified
-class. This is the function that implements C<UNIVERSAL::isa>. It works
-for class names as well as for objects.
-
- bool sv_derived_from(SV* sv, const char* name)
-
-=for hackers
-Found in file universal.c
-
=item sv_eq
X<sv_eq>
(This is now used as a subroutine by C<sv_magic>.)
- MAGIC * sv_magicext(SV* sv, SV* obj, int how, const MGVTBL *vtbl, const char* name, I32 namlen)
+ MAGIC * sv_magicext(SV* sv, SV* obj, int how, MGVTBL *vtbl, const char* name, I32 namlen)
=for hackers
Found in file sv.c
=for hackers
Found in file sv.c
-=item sv_report_used
-X<sv_report_used>
-
-Dump the contents of all SVs not yet freed. (Debugging aid).
-
- void sv_report_used()
-
-=for hackers
-Found in file sv.c
-
=item sv_reset
X<sv_reset>
Copies an integer into a new SV, optionally blessing the SV. The C<rv>
argument will be upgraded to an RV. That RV will be modified to point to
the new SV. The C<classname> argument indicates the package for the
-blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV
will have a reference count of 1, and the RV will be returned.
SV* sv_setref_iv(SV* rv, const char* classname, IV iv)
Copies a double into a new SV, optionally blessing the SV. The C<rv>
argument will be upgraded to an RV. That RV will be modified to point to
the new SV. The C<classname> argument indicates the package for the
-blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV
will have a reference count of 1, and the RV will be returned.
SV* sv_setref_nv(SV* rv, const char* classname, NV nv)
argument will be upgraded to an RV. That RV will be modified to point to
the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
into the SV. The C<classname> argument indicates the package for the
-blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV
will have a reference count of 1, and the RV will be returned.
Do not use with other Perl types such as HV, AV, SV, CV, because those
string must be specified with C<n>. The C<rv> argument will be upgraded to
an RV. That RV will be modified to point to the new SV. The C<classname>
argument indicates the package for the blessing. Set C<classname> to
-C<Nullch> to avoid the blessing. The new SV will have a reference count
+C<NULL> to avoid the blessing. The new SV will have a reference count
of 1, and the RV will be returned.
Note that C<sv_setref_pv> copies the pointer while this copies the string.
Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv>
argument will be upgraded to an RV. That RV will be modified to point to
the new SV. The C<classname> argument indicates the package for the
-blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV
will have a reference count of 1, and the RV will be returned.
SV* sv_setref_uv(SV* rv, const char* classname, UV uv)
=for hackers
Found in file sv.c
-=item sv_setsv_nomg
-X<sv_setsv_nomg>
-
-Like C<sv_setsv> but doesn't process magic.
-
- void sv_setsv_nomg(SV* dsv, SV* ssv)
-
-=for hackers
-Found in file sv.h
-
=item sv_setuv
X<sv_setuv>
=for hackers
Found in file sv.c
-=item sv_usepvn
-X<sv_usepvn>
-
-Tells an SV to use C<ptr> to find its string value. Normally the string is
-stored inside the SV but sv_usepvn allows the SV to use an outside string.
-The C<ptr> should point to memory that was allocated by C<malloc>. The
-string length, C<len>, must be supplied. This function will realloc the
-memory pointed to by C<ptr>, so that pointer should not be freed or used by
-the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
-See C<sv_usepvn_mg>.
+=item sv_usepvn_flags
+X<sv_usepvn_flags>
- void sv_usepvn(SV* sv, char* ptr, STRLEN len)
-
-=for hackers
-Found in file sv.c
-
-=item sv_usepvn_mg
-X<sv_usepvn_mg>
+Tells an SV to use C<ptr> to find its string value. Normally the
+string is stored inside the SV but sv_usepvn allows the SV to use an
+outside string. The C<ptr> should point to memory that was allocated
+by C<malloc>. The string length, C<len>, must be supplied. By default
+this function will realloc (i.e. move) the memory pointed to by C<ptr>,
+so that pointer should not be freed or used by the programmer after
+giving it to sv_usepvn, and neither should any pointers from "behind"
+that pointer (e.g. ptr + 1) be used.
-Like C<sv_usepvn>, but also handles 'set' magic.
+If C<flags> & SV_SMAGIC is true, will call SvSETMAGIC. If C<flags> &
+SV_HAS_TRAILING_NUL is true, then C<ptr[len]> must be NUL, and the realloc
+will be skipped. (i.e. the buffer is actually at least 1 byte longer than
+C<len>, and already meets the requirements for storing in C<SvPVX>)
- void sv_usepvn_mg(SV *sv, char *ptr, STRLEN len)
+ void sv_usepvn_flags(SV* sv, char* ptr, STRLEN len, U32 flags)
=for hackers
Found in file sv.c
updates len to contain the new length.
Returns zero on failure, setting C<len> to -1.
+If you need a copy of the string, see C<bytes_from_utf8>.
+
NOTE: this function is experimental and may change or be
removed without notice.
sidestepping the normal C order of execution. See C<warn>.
If you want to throw an exception object, assign the object to
-C<$@> and then pass C<Nullch> to croak():
+C<$@> and then pass C<NULL> to croak():
errsv = get_sv("@", TRUE);
sv_setsv(errsv, exception_object);
- croak(Nullch);
+ croak(NULL);
void croak(const char* pat, ...)
projects / p5sagit/p5-mst-13.2.git / blobdiff