From f441a225c4eb56deff1edc2402fe85a0ae263ebd Mon Sep 17 00:00:00 2001 From: Minsoo Choo Date: Tue, 6 Jan 2026 14:57:27 -0500 Subject: [PATCH] stdbool.h: Update for C23 When a compiler with C23 or higher is detected, builtin bool, true, and false are used to conform the C23 standard. Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D44664 --- include/stdbool.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/include/stdbool.h b/include/stdbool.h index a03835ca696..968967a4cfa 100644 --- a/include/stdbool.h +++ b/include/stdbool.h @@ -26,15 +26,19 @@ * SUCH DAMAGE. */ +#ifndef __STDC_VERSION_STDBOOL_H__ +#define __STDC_VERSION_STDBOOL_H__ 202311L + #ifndef __bool_true_false_are_defined #define __bool_true_false_are_defined 1 -#ifndef __cplusplus +#if (__STDC_VERSION__ < 202311L) && !defined(__cplusplus) #define false 0 #define true 1 #define bool _Bool -#endif /* !__cplusplus */ +#endif /* (__STDC_VERSION__ < 202311L) && !defined(__cplusplus) */ #endif /* __bool_true_false_are_defined */ +#endif /* __STDC_VERSION_STDBOOL_H__ */