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include/stdckdint.h: make the header compatible with C++

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by removing the cast to _Bool.  The _Bool type is not defined for C++,
and the specification from the gcc info doc states that the return
type of the  __builtin_{add,sub,mul}_overflow() is bool already.

This is done instead of including stdbool.h to avoid namespace
pollution, since defining bool from stdckdint.h simingly is not
sanctioned by ISO/IEC 9899:2024.

PR:	290299
Reviewed by:	des
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D53149
This commit is contained in:
Konstantin Belousov 2025-10-17 06:49:14 +03:00
parent 96d82d2d13
commit 3c052bec12
1 changed files with 3 additions and 3 deletions
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6
include/stdckdint.h
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@ -13,7 +13,7 @@
#if __GNUC_PREREQ__(5, 1) || __has_builtin(__builtin_add_overflow)
#define ckd_add(result, a, b) \
(_Bool)__builtin_add_overflow((a), (b), (result))
__builtin_add_overflow((a), (b), (result))
#else
#define ckd_add(result, a, b) \
_Static_assert(0, "checked addition not supported")
@ -21,7 +21,7 @@
#if __GNUC_PREREQ__(5, 1) || __has_builtin(__builtin_sub_overflow)
#define ckd_sub(result, a, b) \
(_Bool)__builtin_sub_overflow((a), (b), (result))
__builtin_sub_overflow((a), (b), (result))
#else
#define ckd_sub(result, a, b) \
_Static_assert(0, "checked subtraction not supported")
@ -29,7 +29,7 @@
#if __GNUC_PREREQ__(5, 1) || __has_builtin(__builtin_mul_overflow)
#define ckd_mul(result, a, b) \
(_Bool)__builtin_mul_overflow((a), (b), (result))
__builtin_mul_overflow((a), (b), (result))
#else
#define ckd_mul(result, a, b) \
_Static_assert(0, "checked multiplication not supported")