core_self_tests:.c: add SUB_OVERFLOW() test

Add a test that fails with GCC 4.9.4 (Linaro GCC 4.9-2017.01) [1] with the original overflow macros prior to commit 86ab9ff ("util: fix fallback SUB_OVERFLOW() macro"). Link: [1] http://releases.linaro.org/components/toolchain/binaries/4.9-2017.01/arm-linux-gnueabihf/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf.tar.xz Signed-off-by: Jens Wiklander <[email protected]> Acked-by: Jerome Forissier <[email protected]>
OP-TEE · May 9, 2018 · bce296d · bce296d
1 parent 0dfce39
commit bce296d
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/core/arch/arm/pta/core_self_tests.c b/core/arch/arm/pta/core_self_tests.c
@@ -92,6 +92,10 @@ static int self_test_sub_overflow(void)
 	uint32_t r_u32;
 	int32_t r_s32;
 
+	if (SUB_OVERFLOW(8U, 1U, &r_s32))
+		return -1;
+	if (r_s32 != 7)
+		return -1;
 	if (SUB_OVERFLOW(32U, 30U, &r_u32))
 		return -1;
 	if (r_u32 != 2)