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It differs from QEMU_BUILD_BUG_ON, aka _Static_assert, in that it is sensitive to control flow and is subject to dead-code elimination. Acked-by: Paolo Bonzini Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- include/qemu/osdep.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index b1c161c035..2276094729 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -186,6 +186,14 @@ void QEMU_ERROR("code path is reachable") #define qemu_build_not_reached() g_assert_not_reached() #endif +/** + * qemu_build_assert() + * + * The compiler, during optimization, is expected to prove that the + * assertion is true. + */ +#define qemu_build_assert(test) while (!(test)) qemu_build_not_reached() + /* * According to waitpid man page: * WCOREDUMP