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glibc/stdlib
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Joseph Myers a7ddbf456d Add once_flag, ONCE_FLAG_INIT and call_once to stdlib.h for C23 
C23 adds once_flag, ONCE_FLAG_INIT and call_once to stdlib.h (in C11
they were only in threads.h, in C23 they are in both headers; this
change came from N2840).  Implement this change, with a
bits/types/once_flag.h header for the common type and initializer
definitions.

Note that there's an omnibus bug (bug 33001) that covers more than
just these missing definitions.

This doesn't seem a significant enough feature to be worth mentioning
in NEWS.

ISO C is not concerned with whether functions are in libc or
libpthread, but POSIX links this to what header they are declared in,
so functions declared in stdlib.h are supposed to be in libc.
However, the current edition of POSIX is based on C17; hopefully Hurd
glibc will have completed the merge of libpthread into libc (in
particular, moving call_once) well before a future edition of POSIX
based on C23 (or a later version of ISO C) is released.

Tested for x86_64 and x86.
 		2025-10-01 15:15:15 +00:00
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bits
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sys
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Depend
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Makefile Add once_flag, ONCE_FLAG_INIT and call_once to stdlib.h for C23 2025-10-01 15:15:15 +00:00
Versions stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
a64l.c
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abort.c stdlib: resolve a double lock init issue after fork [BZ #32994] 2025-07-31 19:11:08 +02:00
abs.c
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add_n.c
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addmul_1.c
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alloca.h
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arc4random.c
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arc4random_uniform.c
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at_quick_exit.c
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atexit.c
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atof.c
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atoi.c
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atol.c
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atoll.c
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bsearch.c
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bug-fmtmsg1.c
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bug-getcontext.c
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bug-strtod.c
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bug-strtod2.c
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canonicalize.c Remove eloop-threshold.h 2025-03-21 15:46:48 -03:00
cmp.c
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cxa_at_quick_exit.c
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cxa_atexit.c
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cxa_finalize.c
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cxa_thread_atexit_impl.c
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dbl2mpn.c
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div.c
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divmod_1.c
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divrem.c
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drand48-iter.c
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drand48.c
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drand48_r.c
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erand48.c
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erand48_r.c
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errno.h
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exit.c
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exit.h
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fmtmsg.c
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fmtmsg.h
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fpioconst.c
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fpioconst.h
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gen-fpioconst.c
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gen-tst-strtod-round.c
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getcontext.c
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getentropy.c
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getenv.c posix: Move environ helper variables next to environ definition (bug 32541) 2025-03-07 21:40:55 +01:00
getrandom.c
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getsubopt.c
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gmp-impl.h
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gmp.h
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grouping.c
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grouping.h
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groupingwc.c
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inlines.c
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inttypes.h stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
isomac.c
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jrand48.c
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jrand48_r.c
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l64a.c
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labs.c
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lcong48.c
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lcong48_r.c
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ldbl2mpn.c
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ldiv.c
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llabs.c
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lldiv.c
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longlong.h
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lrand48.c
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lrand48_r.c
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lshift.c
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makecontext.c
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mblen.c
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mbstowcs.c
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mbtowc.c
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mod_1.c
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monetary.h
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mp_clz_tab.c
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mpn2dbl.c
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mpn2flt.c
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mpn2ldbl.c
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mrand48.c
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mrand48_r.c
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mul.c
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mul_1.c
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mul_n.c
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nrand48.c
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nrand48_r.c
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old_atexit.c
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on_exit.c
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putenv.c
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qsort.c stdlib: Fix qsort memory leak if callback throws (BZ 32058) 2025-04-02 18:01:55 +00:00
quick_exit.c
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rand.c
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rand_r.c
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random.c stdlib: Add single-threaded fast path to rand() 2025-02-24 14:13:43 +00:00
random_r.c
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rpmatch.c
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rshift.c
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secure-getenv.c
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seed48.c
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seed48_r.c
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setcontext.c
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setenv.c stdlib: Re-implement free (environ) compatibility kludge for setenv 2025-01-24 22:37:49 +01:00
setenv.h stdlib: Re-implement free (environ) compatibility kludge for setenv 2025-01-24 22:37:49 +01:00
srand48.c
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srand48_r.c
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stdbit.h
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stdc_bit_ceil_uc.c
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stdc_bit_ceil_ui.c
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stdc_bit_ceil_ul.c
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stdc_bit_ceil_ull.c
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stdc_bit_ceil_us.c
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stdc_bit_floor_uc.c
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stdc_bit_floor_ui.c
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stdc_bit_floor_ul.c
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stdc_bit_floor_ull.c
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stdc_bit_floor_us.c
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stdc_bit_width_uc.c
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stdc_bit_width_ui.c
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stdc_bit_width_ul.c
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stdc_bit_width_ull.c
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stdc_bit_width_us.c
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stdc_count_ones_uc.c
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stdc_count_ones_ui.c
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stdc_count_ones_ul.c
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stdc_count_ones_ull.c
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stdc_count_ones_us.c
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stdc_count_zeros_uc.c
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stdc_count_zeros_ui.c
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stdc_count_zeros_ul.c
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stdc_count_zeros_ull.c
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stdc_count_zeros_us.c
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stdc_first_leading_one_uc.c
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stdc_first_leading_one_ui.c
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stdc_first_leading_one_ul.c
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stdc_first_leading_one_ull.c
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stdc_first_leading_one_us.c
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stdc_first_leading_zero_uc.c
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stdc_first_leading_zero_ui.c
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stdc_first_leading_zero_ul.c
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stdc_first_leading_zero_ull.c
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stdc_first_leading_zero_us.c
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stdc_first_trailing_one_uc.c
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stdc_first_trailing_one_ui.c
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stdc_first_trailing_one_ul.c
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stdc_first_trailing_one_ull.c
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stdc_first_trailing_one_us.c
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stdc_first_trailing_zero_uc.c
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stdc_first_trailing_zero_ui.c
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stdc_first_trailing_zero_ul.c
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stdc_first_trailing_zero_ull.c
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stdc_first_trailing_zero_us.c
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stdc_has_single_bit_uc.c
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stdc_has_single_bit_ui.c
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stdc_has_single_bit_ul.c
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stdc_has_single_bit_ull.c
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stdc_has_single_bit_us.c
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stdc_leading_ones_uc.c
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stdc_leading_ones_ui.c
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stdc_leading_ones_ul.c
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stdc_leading_ones_ull.c
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stdc_leading_ones_us.c
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stdc_leading_zeros_uc.c
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stdc_leading_zeros_ui.c
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stdc_leading_zeros_ul.c
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stdc_leading_zeros_ull.c
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stdc_leading_zeros_us.c
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stdc_trailing_ones_uc.c
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stdc_trailing_ones_ui.c
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stdc_trailing_ones_ul.c
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stdc_trailing_ones_ull.c
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stdc_trailing_ones_us.c
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stdc_trailing_zeros_uc.c
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stdc_trailing_zeros_ui.c
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stdc_trailing_zeros_ul.c
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stdc_trailing_zeros_ull.c
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stdc_trailing_zeros_us.c
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stdint.h
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stdlib.h Add once_flag, ONCE_FLAG_INIT and call_once to stdlib.h for C23 2025-10-01 15:15:15 +00:00
strfmon.c
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strfmon_l.c
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strfrom-skeleton.c
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strfromd.c
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strfromf.c
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strfroml.c
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strtod.c
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strtod_l.c
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strtod_nan.c
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strtod_nan_main.c
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strtod_nan_narrow.h
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strtod_nan_wide.h
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strtof.c
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strtof_l.c
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strtof_nan.c
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strtol.c
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strtol_l.c
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strtold.c
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strtold_l.c
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strtold_nan.c
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strtoll.c
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strtoll_l.c
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strtoul.c
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strtoul_l.c
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strtoull.c
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strtoull_l.c
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sub_n.c
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submul_1.c
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swapcontext.c
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system.c
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tens_in_limb.c
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test-a64l.c
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test-at_quick_exit-race.c
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test-atexit-race-common.c
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test-atexit-race.c
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test-atexit-recursive.c
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test-bz22786.c stdlib: Use support_accept_oom in test-bz22786 2025-09-18 19:11:38 +02:00
test-canon.c Tests: Create files with mode 0666, not 0777 (bug 33171) 2025-09-01 15:12:28 +02:00
test-canon2.c
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test-cxa_atexit-race.c
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test-cxa_atexit-race2.c
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test-dlclose-exit-race-helper.c
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test-dlclose-exit-race.c
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test-on_exit-race.c
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testdiv.c
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testdiv.input
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testmb.c
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testmb2.c
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testrand.c
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testsort.c
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tst-abs.c
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tst-arc4random-fork.c
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tst-arc4random-stats.c
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tst-arc4random-thread.c
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tst-at_quick_exit.c
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tst-atexit-common.c
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tst-atexit.c
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tst-atof1.c
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tst-atof2.c
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tst-bsearch.c
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tst-bz20544.c
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tst-canon-bz26341.c Remove eloop-threshold.h 2025-03-21 15:46:48 -03:00
tst-concurrent-exit-skeleton.c
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tst-concurrent-exit.c
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tst-concurrent-quick_exit.c
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tst-cxa_atexit.c
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tst-empty-env.c
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tst-environ-change-1.c stdlib: Re-implement free (environ) compatibility kludge for setenv 2025-01-24 22:37:49 +01:00
tst-environ-change-2.c stdlib: Re-implement free (environ) compatibility kludge for setenv 2025-01-24 22:37:49 +01:00
tst-environ-change-3.c stdlib: Re-implement free (environ) compatibility kludge for setenv 2025-01-24 22:37:49 +01:00
tst-environ-change-4.c stdlib: Re-implement free (environ) compatibility kludge for setenv 2025-01-24 22:37:49 +01:00
tst-environ-change-skeleton.c stdlib: Re-implement free (environ) compatibility kludge for setenv 2025-01-24 22:37:49 +01:00
tst-environ.c
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tst-fmtmsg.c
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tst-fmtmsg.sh
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tst-getenv-signal.c
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tst-getenv-static.c posix: Move environ helper variables next to environ definition (bug 32541) 2025-03-07 21:40:55 +01:00
tst-getenv-thread.c
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tst-getenv-unsetenv.c
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tst-getrandom-errno.c
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tst-getrandom.c
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tst-getrandom2.c
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tst-labs.c
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tst-limits.c
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tst-llabs.c
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tst-makecontext-align.c
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tst-makecontext.c
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tst-makecontext2.c
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tst-makecontext3.c
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tst-on_exit.c
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tst-putenv.c
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tst-putenvmod.c
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tst-qsort.c
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tst-qsort2.c
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tst-qsort3.c
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tst-qsort4.c stdlib: Fix qsort memory leak if callback throws (BZ 32058) 2025-04-02 18:01:55 +00:00
tst-qsort6.c
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tst-qsort7.c stdlib: Fix qsort memory leak if callback throws (BZ 32058) 2025-04-02 18:01:55 +00:00
tst-qsortx7.c stdlib: Fix qsort memory leak if callback throws (BZ 32058) 2025-04-02 18:01:55 +00:00
tst-quick_exit.cc
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tst-rand-sequence.c
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tst-rand48-2.c
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tst-rand48.c
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tst-random-bz30584.c
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tst-random.c
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tst-random2.c
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tst-realpath-toolong.c
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tst-realpath.c
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tst-secure-getenv.c Fix error reporting (false negatives) in SGID tests 2025-05-22 14:36:37 +02:00
tst-setcontext.c
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tst-setcontext2.c
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tst-setcontext3.c
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tst-setcontext3.sh
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tst-setcontext4.c
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tst-setcontext5.c
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tst-setcontext6.c
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tst-setcontext7.c
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tst-setcontext8.c
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tst-setcontext9.c
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tst-setcontext10.c
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tst-setcontext11.c
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tst-setenv-environ.c stdlib: Test using setenv with updated environ [BZ #32588] 2025-01-25 07:31:41 +08:00
tst-stdbit-Wconversion.c
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tst-stdbit-builtins.c
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tst-stdbit.h
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tst-stdc_bit_ceil.c
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tst-stdc_bit_floor.c
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tst-stdc_bit_width.c
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tst-stdc_count_ones.c
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tst-stdc_count_zeros.c
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tst-stdc_first_leading_one.c
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tst-stdc_first_leading_zero.c
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tst-stdc_first_trailing_one.c
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tst-stdc_first_trailing_zero.c
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tst-stdc_has_single_bit.c
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tst-stdc_leading_ones.c
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tst-stdc_leading_zeros.c
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tst-stdc_trailing_ones.c
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tst-stdc_trailing_zeros.c
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tst-strfmon_l.c
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tst-strfrom-locale.c
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tst-strfrom.c
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tst-strfrom.h
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tst-strtod-nan-locale-main.c
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tst-strtod-nan-locale.c
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tst-strtod-nan-sign-main.c
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tst-strtod-nan-sign.c
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tst-strtod-overflow.c
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tst-strtod-round-data
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tst-strtod-round-data.h
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tst-strtod-round-skeleton.c
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tst-strtod-round.c
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tst-strtod-underflow.c
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tst-strtod.c
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tst-strtod.h
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tst-strtod1i.c
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tst-strtod2.c
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tst-strtod3.c
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tst-strtod4.c
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tst-strtod5.c
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tst-strtod5i.c
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tst-strtod6.c
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tst-strtol-binary-c11.c
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tst-strtol-binary-c23.c
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tst-strtol-binary-gnu11.c
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tst-strtol-binary-gnu23.c
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tst-strtol-binary-main.c
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tst-strtol-locale-main.c
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tst-strtol-locale.c
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tst-strtol.c
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tst-strtoll.c
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tst-swapcontext1.c
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tst-swapcontext2.c
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tst-system.c
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tst-thread-quick_exit.cc
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tst-tininess.c
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tst-tls-atexit-lib.c
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tst-tls-atexit-nodelete.c
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tst-tls-atexit.c
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tst-uabs.c stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
tst-uimaxabs.c stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
tst-ulabs.c stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
tst-ullabs.c stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
tst-unsetenv1.c
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tst-width-stdint.c
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tst-width.c
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tst-xpg-basename.c
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uabs.c stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
ucontext.h
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udiv_qrnnd.c
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ulabs.c stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
ullabs.c stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs 2025-04-08 12:51:51 +00:00
wcstombs.c
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wctomb.c
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xpg_basename.c
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