From 2d01af8e5667bc1f63b9f08e44d0818a55f2e8ad Mon Sep 17 00:00:00 2001
From: Zdenek Kabelac <zkabelac@redhat.com>
Date: Tue, 16 Apr 2024 21:13:53 +0200
Subject: [PATCH] tests: add another explicit barrier

Just to be sure compiler cannot optimize this out.
---
 test/lib/dmsecuretest.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/lib/dmsecuretest.c b/test/lib/dmsecuretest.c
index 1026e89fd..3c87d6f4a 100644
--- a/test/lib/dmsecuretest.c
+++ b/test/lib/dmsecuretest.c
@@ -66,6 +66,7 @@ int main (int argc, char *argv[])
 		rot13(aes);
 		snprintf(table, sizeof(table), "%s %s 0 %s %u", cipher, aes, device, sz);
 		memset(aes, 0, sizeof(aes));
+		asm volatile ("" ::: "memory");/* Compiler barrier. */
 		(void) dm_task_add_target(dmt, 0, sz, "crypt", table);
 		memset(table, 0, sizeof(table));
 		asm volatile ("" ::: "memory");/* Compiler barrier. */