diff options
| author | Richard Weinberger <[email protected]> | 2024-08-09 11:54:29 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2024-08-15 16:14:36 -0600 |
| commit | a29805d822c4bffe47b464e1f62fca11c6c2b481 (patch) | |
| tree | daa248c68d1670143f87cdd0efe87a9b81e24745 /include/linux | |
| parent | 35f75d2a46e5859138c83a75cd2f4141c5479ab9 (diff) | |
compiler: Ensure __builtin_*_overflow() support
Both gcc and clang support this for a long time.
Make sure the feature is present.
Signed-off-by: Richard Weinberger <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/compiler_types.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index 1a3060117f1..8b6ce9c11cd 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -71,6 +71,13 @@ extern void __chk_io_ptr(const volatile void __iomem *); #endif /* + * At least gcc 5.1 or clang 8 are needed. + */ +#ifndef COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW +#error Unsupported compiler +#endif + +/* * Some architectures need to provide custom definitions of macros provided * by linux/compiler-*.h, and can do so using asm/compiler.h. We include that * conditionally rather than using an asm-generic wrapper in order to avoid |