Provide a symbol that can always be used to signal an error, regardless of optimization. Usage of this should be protected by e.g. __builtin_constant_p, which guards for optimization.
Reviewed-by: Philippe Mathieu-Daudé <[email protected]> Signed-off-by: Richard Henderson <[email protected]> --- include/qemu/compiler.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h index d620a841e4..cf28bb2bcd 100644 --- a/include/qemu/compiler.h +++ b/include/qemu/compiler.h @@ -215,9 +215,10 @@ * supports QEMU_ERROR, this will be reported at compile time; otherwise * this will be reported at link time due to the missing symbol. */ -#if defined(__OPTIMIZE__) && !defined(__NO_INLINE__) extern void QEMU_NORETURN QEMU_ERROR("code path is reachable") - qemu_build_not_reached(void); + qemu_build_not_reached_always(void); +#if defined(__OPTIMIZE__) && !defined(__NO_INLINE__) +#define qemu_build_not_reached() qemu_build_not_reached_always() #else #define qemu_build_not_reached() g_assert_not_reached() #endif -- 2.25.1
