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| author | Kees Cook <keescook@chromium.org> | 2023-08-17 13:06:03 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-08-17 16:46:35 -0700 |
| commit | c8248faf3ca276ebdf60f003b3e04bf764daba91 (patch) | |
| tree | 7b5e722f0566ee64463add2593a226de47ca392b /include/linux/compiler_attributes.h | |
| parent | be8dffa04de3894bad0bf31d1531a2f06353b70e (diff) | |
| download | lwn-c8248faf3ca276ebdf60f003b3e04bf764daba91.tar.gz lwn-c8248faf3ca276ebdf60f003b3e04bf764daba91.zip | |
Compiler Attributes: counted_by: Adjust name and identifier expansion
GCC and Clang's current RFCs name this attribute "counted_by", and have
moved away from using a string for the member name. Update the kernel's
macros to match. Additionally provide a UAPI no-op macro for UAPI structs
that will gain annotations.
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Fixes: dd06e72e68bc ("Compiler Attributes: Add __counted_by macro")
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20230817200558.never.077-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'include/linux/compiler_attributes.h')
| -rw-r--r-- | include/linux/compiler_attributes.h | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h index 00efa35c350f..28566624f008 100644 --- a/include/linux/compiler_attributes.h +++ b/include/linux/compiler_attributes.h @@ -95,6 +95,19 @@ #endif /* + * Optional: only supported since gcc >= 14 + * Optional: only supported since clang >= 18 + * + * gcc: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108896 + * clang: https://reviews.llvm.org/D148381 + */ +#if __has_attribute(__counted_by__) +# define __counted_by(member) __attribute__((__counted_by__(member))) +#else +# define __counted_by(member) +#endif + +/* * Optional: not supported by gcc * Optional: only supported since clang >= 14.0 * @@ -130,19 +143,6 @@ #endif /* - * Optional: only supported since gcc >= 14 - * Optional: only supported since clang >= 17 - * - * gcc: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108896 - * clang: https://reviews.llvm.org/D148381 - */ -#if __has_attribute(__element_count__) -# define __counted_by(member) __attribute__((__element_count__(#member))) -#else -# define __counted_by(member) -#endif - -/* * Optional: only supported since clang >= 14.0 * * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-error-function-attribute |