[PATCH master 1/2] KASan: test_kasan: silence warning with newer GCC

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

Newer GCC will rightly complain about this being an out-of-bounds
access. This is intended as the kasan command is meant to cause
out-of-bounds accesses to test proper operation of KASan.

Thus silence the warning for this specific instance.

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

diff --git a/lib/kasan/test_kasan.c b/lib/kasan/test_kasan.c
index d0ea91547711..14511cdb80bd 100644
--- a/lib/kasan/test_kasan.c
+++ b/lib/kasan/test_kasan.c
@@ -290,6 +290,8 @@ static noinline void kasan_alloca_oob_left(void)
 	char alloca_array[i];
 	char *p = alloca_array - 1;
 
+	OPTIMIZER_HIDE_VAR(p);
+
 	pr_info("out-of-bounds to left on alloca\n");
 	*(volatile char *)p;
 }
-- 
2.30.2