:
: P Pure function:
:
-: A pure function has no effects except the return value, and the return
-: value depends only on params and/or globals. Also implies "R":
+: A pure function has no effects except the return value, and the return
+: value depends only on params and/or globals. This is a hint to the
+: compiler that it can optimize calls to this function out of common
+: subexpressions. Consequently if this flag is wrongly specified, it can
+: lead to subtle bugs that vary by platform, compiler, compiler version,
+: and optimization level. Also, a future commit could easily change a
+: currently-pure function without even noticing this flag. So it should
+: be used sparingly, only for functions that are unlikely to ever become
+: not pure by future commits. It should not be used for static
+: functions, as the compiler already has the information needed to make
+: the 'pure' determination and doesn't need any hint; so it doesn't add
+: value in those cases, and could be dangerous if it causes the compiler
+: to skip doing its own checks. It should not be used on functions that
+: touch SVs, as those can trigger unexpected magic. Also implies "R":
:
: proto.h: add __attribute__pure__
:
|I32 klen|NULLOK SV *val|U32 hash|int flags
Amd |void |hv_undef |NULLOK HV *hv
poX |void |hv_undef_flags |NULLOK HV *hv|U32 flags
-Am |I32 |ibcmp |NN const char* a|NN const char* b|I32 len
+AmP |I32 |ibcmp |NN const char* a|NN const char* b|I32 len
AnpP |I32 |foldEQ |NN const char* a|NN const char* b|I32 len
-Am |I32 |ibcmp_locale |NN const char* a|NN const char* b|I32 len
+AmP |I32 |ibcmp_locale |NN const char* a|NN const char* b|I32 len
AnpP |I32 |foldEQ_locale |NN const char* a|NN const char* b|I32 len
Am |I32 |ibcmp_utf8 |NN const char *s1|NULLOK char **pe1|UV l1 \
|bool u1|NN const char *s2|NULLOK char **pe2 \
ADMpR |bool |isALNUM_lazy |NN const char* p
#ifdef PERL_IN_UTF8_C
snR |U8 |to_lower_latin1|const U8 c|NULLOK U8 *p|NULLOK STRLEN *lenp
-inPR |bool |is_utf8_cp_above_31_bits|NN const U8 * const s|NN const U8 * const e
+inR |bool |is_utf8_cp_above_31_bits|NN const U8 * const s|NN const U8 * const e
#endif
#if defined(PERL_IN_UTF8_C) || defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C)
EXp |UV |_to_fold_latin1|const U8 c|NN U8 *p|NN STRLEN *lenp|const unsigned int flags
ADMpR |bool |is_uni_print_lc|UV c
ADMpR |bool |is_uni_punct_lc|UV c
ADMpPR |bool |is_uni_xdigit_lc|UV c
-AnidRP |bool |is_utf8_invariant_string|NN const U8* const s|STRLEN const len
+AnidR |bool |is_utf8_invariant_string|NN const U8* const s|STRLEN const len
AmnpdRP |bool |is_ascii_string|NN const U8* const s|const STRLEN len
AmnpdRP |bool |is_invariant_string|NN const U8* const s|const STRLEN len
AnpdD |STRLEN |is_utf8_char |NN const U8 *s
Abmnpd |STRLEN |is_utf8_char_buf|NN const U8 *buf|NN const U8 *buf_end
-AnipdP |bool |is_utf8_string |NN const U8 *s|const STRLEN len
-AnidP |bool |is_utf8_string_flags \
+AnipdR |bool |is_utf8_string |NN const U8 *s|const STRLEN len
+AnidR |bool |is_utf8_string_flags \
|NN const U8 *s|const STRLEN len|const U32 flags
-AnidP |bool |is_strict_utf8_string|NN const U8 *s|const STRLEN len
-AnidP |bool |is_c9strict_utf8_string|NN const U8 *s|const STRLEN len
+AnidR |bool |is_strict_utf8_string|NN const U8 *s|const STRLEN len
+AnidR |bool |is_c9strict_utf8_string|NN const U8 *s|const STRLEN len
Anpdmb |bool |is_utf8_string_loc \
|NN const U8 *s|const STRLEN len|NN const U8 **ep
Andm |bool |is_utf8_string_loc_flags \
|NULLOK const U8 **ep|NULLOK STRLEN *el|const U32 flags
AmndP |bool |is_utf8_valid_partial_char \
|NN const U8 * const s|NN const U8 * const e
-AnidP |bool |is_utf8_valid_partial_char_flags \
+AnidR |bool |is_utf8_valid_partial_char_flags \
|NN const U8 * const s|NN const U8 * const e|const U32 flags
AMpR |bool |_is_uni_FOO|const U8 classnum|const UV c
AMpR |bool |_is_utf8_FOO|const U8 classnum|NN const U8 *p
|const bool utf8
EMiR |char*|form_short_octal_warning|NN const char * const s \
|const STRLEN len
-EiPRn |I32 |regcurly |NN const char *s
+EiRn |I32 |regcurly |NN const char *s
#endif
Apd |UV |grok_hex |NN const char* start|NN STRLEN* len_p|NN I32* flags|NULLOK NV *result
Apd |int |grok_infnan |NN const char** sp|NN const char *send
|NULLOK va_list *const args|NULLOK SV **const svargs \
|const I32 svmax|NULLOK bool *const maybe_tainted
ApR |NV |str_to_version |NN SV *sv
-EpRM |SV* |swash_init |NN const char* pkg|NN const char* name|NN SV* listsv|I32 minbits|I32 none
-EpM |UV |swash_fetch |NN SV *swash|NN const U8 *ptr|bool do_utf8
+EXpRM |SV* |swash_init |NN const char* pkg|NN const char* name|NN SV* listsv|I32 minbits|I32 none
+EXpM |UV |swash_fetch |NN SV *swash|NN const U8 *ptr|bool do_utf8
#ifdef PERL_IN_REGCOMP_C
EiMR |SV* |add_cp_to_invlist |NULLOK SV* invlist|const UV cp
EiM |void |invlist_set_len|NN SV* const invlist|const UV len|const bool offset
|NN const char *normal| \
NULLOK const char *special
#if defined(PERL_IN_UTF8_C)
-inRP |bool |does_utf8_overflow|NN const U8 * const s|NN const U8 * e
-inRP |bool |is_utf8_overlong_given_start_byte_ok|NN const U8 * const s|const STRLEN len
-inRP |bool |isFF_OVERLONG |NN const U8 * const s|const STRLEN len
+inR |bool |does_utf8_overflow|NN const U8 * const s|NN const U8 * e
+inR |bool |is_utf8_overlong_given_start_byte_ok|NN const U8 * const s|const STRLEN len
+inR |bool |isFF_OVERLONG |NN const U8 * const s|const STRLEN len
sMR |char * |unexpected_non_continuation_text \
|NN const U8 * const s \
|STRLEN print_len \
Ap |U8* |utf16_to_utf8 |NN U8* p|NN U8 *d|I32 bytelen|NN I32 *newlen
Ap |U8* |utf16_to_utf8_reversed|NN U8* p|NN U8 *d|I32 bytelen|NN I32 *newlen
AdpPR |STRLEN |utf8_length |NN const U8* s|NN const U8 *e
-AipdPR |IV |utf8_distance |NN const U8 *a|NN const U8 *b
-AipdPRn |U8* |utf8_hop |NN const U8 *s|SSize_t off
-AipdPRn |U8* |utf8_hop_back|NN const U8 *s|SSize_t off|NN const U8 *start
-AipdPRn |U8* |utf8_hop_forward|NN const U8 *s|SSize_t off|NN const U8 *end
-AipdPRn |U8* |utf8_hop_safe |NN const U8 *s|SSize_t off|NN const U8 *start|NN const U8 *end
+AipdR |IV |utf8_distance |NN const U8 *a|NN const U8 *b
+AipdRn |U8* |utf8_hop |NN const U8 *s|SSize_t off
+AipdRn |U8* |utf8_hop_back|NN const U8 *s|SSize_t off|NN const U8 *start
+AipdRn |U8* |utf8_hop_forward|NN const U8 *s|SSize_t off|NN const U8 *end
+AipdRn |U8* |utf8_hop_safe |NN const U8 *s|SSize_t off|NN const U8 *start|NN const U8 *end
ApMd |U8* |utf8_to_bytes |NN U8 *s|NN STRLEN *len
Apd |int |bytes_cmp_utf8 |NN const U8 *b|STRLEN blen|NN const U8 *u \
|STRLEN ulen
Apd |void |sv_force_normal_flags|NN SV *const sv|const U32 flags
pX |SSize_t|tmps_grow_p |SSize_t ix
Apd |SV* |sv_rvweaken |NN SV *const sv
-AnpPMd |SV* |sv_get_backrefs|NN SV *const sv
+AnpMd |SV* |sv_get_backrefs|NN SV *const sv
: This is indirectly referenced by globals.c. This is somewhat annoying.
p |int |magic_killbackrefs|NN SV *sv|NN MAGIC *mg
Ap |OP* |newANONATTRSUB |I32 floor|NULLOK OP *proto|NULLOK OP *attrs|NULLOK OP *block
# endif
#endif
-AmopP |const XOP * |custom_op_xop |NN const OP *o
+Amop |const XOP * |custom_op_xop |NN const OP *o
ApR |const char * |custom_op_name |NN const OP *o
ApR |const char * |custom_op_desc |NN const OP *o
pRX |XOPRETANY |custom_op_get_field |NN const OP *o|const xop_flags_enum field
|NN I32 *flagp \
|NN char * parse_start \
|char ch
-EsnP |unsigned int|regex_set_precedence|const U8 my_operator
+EsnR |unsigned int|regex_set_precedence|const U8 my_operator
Es |regnode*|handle_regex_sets|NN RExC_state_t *pRExC_state \
|NULLOK SV ** return_invlist \
|NN I32 *flagp|U32 depth \
|U32 word_count|U32 flags|U32 depth
Es |regnode *|construct_ahocorasick_from_trie|NN RExC_state_t *pRExC_state \
|NN regnode *source|U32 depth
-EnPs |const char *|cntrl_to_mnemonic|const U8 c
-EnPs |int |edit_distance |NN const UV *src \
+EnsR |const char *|cntrl_to_mnemonic|const U8 c
+EnsR |int |edit_distance |NN const UV *src \
|NN const UV *tgt \
|const STRLEN x \
|const STRLEN y \
#if defined(PERL_IN_UTIL_C)
s |bool |ckwarn_common |U32 w
#endif
-Apo |bool |ckwarn |U32 w
-Apo |bool |ckwarn_d |U32 w
+ApoP |bool |ckwarn |U32 w
+ApoP |bool |ckwarn_d |U32 w
: FIXME - exported for ByteLoader - public or private?
XEopMR |STRLEN *|new_warnings_bitfield|NULLOK STRLEN *buffer \
|NN const char *const bits|STRLEN size
Apnod |Size_t |my_strlcpy |NULLOK char *dst|NULLOK const char *src|Size_t size
#endif
-Apdn |bool |isinfnan |NV nv
+APpdn |bool |isinfnan |NV nv
p |bool |isinfnansv |NN SV *sv
#if !defined(HAS_SIGNBIT)