diff options
| author | Lexi Winter <lexi@le-Fay.ORG> | 2024-02-02 09:41:40 -0700 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2025-12-30 00:46:45 +0100 |
| commit | cd2a65a60701d806e8ebbf97b6c77c880e0c9746 (patch) | |
| tree | f484fc9f8e43fa1717d0f7288feb8dac311488c6 | |
| parent | 0487408a76c66b8bf7edddf1ec8025f60c6d0474 (diff) | |
sys/cdefs.h: add __noexcept and __noexcept_if
These macros provide the C++11 noexcept and noexcept(...) keywords if
we're compiling in a C++11 environment. Otherwise, they expand to an
empty string.
This will be used to add the required noexcept specifier to several libc
functions as required in C++11.
MFC after: 2 weeks
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1085
(cherry picked from commit 02b0d4b688cc4deb14cb6e7534a2a4958e48b753)
| -rw-r--r-- | sys/sys/cdefs.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/sys/cdefs.h b/sys/sys/cdefs.h index 8fd07ce85a05..96a3742c4a1d 100644 --- a/sys/sys/cdefs.h +++ b/sys/sys/cdefs.h @@ -395,6 +395,17 @@ #endif /* + * noexcept keyword added in C++11. + */ +#if defined(__cplusplus) && __cplusplus >= 201103L +#define __noexcept noexcept +#define __noexcept_if(__c) noexcept(__c) +#else +#define __noexcept +#define __noexcept_if(__c) +#endif + +/* * nodiscard attribute added in C++17 and C23, but supported by both LLVM and * GCC in earlier language versions, so we use __has_c{,pp}_attribute to test * for it. |