[PATCH 12/22] commands: ubsan: hide zero division in test

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

clang-analyzer pierces the volatile veil and complains that
test_ubsan_divrem_overflow() does a division by zero.

The division is intentional to exercise UBSAN runtime detection of the
condition, so let's hide the fact that val2 is zero using
OPTIMIZER_HIDE_VAR.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 commands/ubsan.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/commands/ubsan.c b/commands/ubsan.c
index 4a9716139c4b..634ab2bc60b2 100644
--- a/commands/ubsan.c
+++ b/commands/ubsan.c
@@ -43,6 +43,8 @@ static void test_ubsan_divrem_overflow(void)
 	volatile int val = 16;
 	volatile int val2 = 0;
 
+	OPTIMIZER_HIDE_VAR(&val2);
+
 	val /= val2;
 }
 
-- 
2.39.5