diff options
| -rw-r--r-- | include/linux/compiler_types.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index 501cffddc2f4..1f2eee8331d3 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -525,6 +525,12 @@ struct ftrace_likely_data { sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long)) #ifdef __OPTIMIZE__ +/* + * #ifdef __OPTIMIZE__ is only a good approximation; for instance "make + * CFLAGS_foo.o=-Og" defines __OPTIMIZE__, does not elide the conditional code + * and can break compilation with wrong error message(s). Combine with + * -U__OPTIMIZE__ when needed. + */ # define __compiletime_assert(condition, msg, prefix, suffix) \ do { \ /* \ @@ -538,7 +544,7 @@ struct ftrace_likely_data { prefix ## suffix(); \ } while (0) #else -# define __compiletime_assert(condition, msg, prefix, suffix) do { } while (0) +# define __compiletime_assert(condition, msg, prefix, suffix) ((void)(condition)) #endif #define _compiletime_assert(condition, msg, prefix, suffix) \ |