Date: Mon, 17 Apr 2023 11:09:20 +0200 From: Jens Gustedt <Jens.Gustedt@...ia.fr> To: musl@...ts.openwall.com Subject: [C23 divers headers 03/17] C23: add call_once to stdlib.h Since C23, call_once, once_flag and ONCE_FLAG_INIT are also accessible even if the platform does not have the threads option. Add them to the header. The identifiers once_flag and ONCE_FLAG_INIT were not reserved in C17 if the header threads.h was not included, so this potentially creates naming conflicts. --- include/stdlib.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/stdlib.h b/include/stdlib.h index 475190bf..c635d99b 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -172,6 +172,10 @@ long double strtold_l(const char *__restrict, char **__restrict, struct __locale #endif #endif +#define ONCE_FLAG_INIT 0 +typedef int once_flag; +void call_once(once_flag *, void (*)(void)); + #ifdef __cplusplus } #endif -- 2.34.1
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