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An improvement for __compiletime_assert and a trivial cleanup

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Merge tag 'compiler-attributes-for-linus-v5.16' of git://github.com/ojeda/linux

Pull compiler attributes update from Miguel Ojeda:
 "An improvement for `__compiletime_assert` and a trivial cleanup"

* tag 'compiler-attributes-for-linus-v5.16' of git://github.com/ojeda/linux:
  compiler_types: mark __compiletime_assert failure as __noreturn
  Compiler Attributes: remove GCC 5.1 mention
This commit is contained in:
Linus Torvalds 2021-11-07 10:38:17 -08:00
commit e54ffb96e6
2 changed files with 7 additions and 2 deletions
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1
include/linux/compiler_attributes.h
View File

@ -113,7 +113,6 @@
#define __deprecated
/*
* Optional: only supported since gcc >= 5.1
* Optional: not supported by clang
* Optional: not supported by icc
*

8
include/linux/compiler_types.h
View File

@ -305,7 +305,13 @@ struct ftrace_likely_data {
#ifdef __OPTIMIZE__
# define __compiletime_assert(condition, msg, prefix, suffix) \
do { \
extern void prefix ## suffix(void) __compiletime_error(msg); \
/* \
* __noreturn is needed to give the compiler enough \
* information to avoid certain possibly-uninitialized \
* warnings (regardless of the build failing). \
*/ \
__noreturn extern void prefix ## suffix(void) \
__compiletime_error(msg); \
if (!(condition)) \
prefix ## suffix(); \
} while (0)