From ac33a3ab12bd3bfd6fd1bf642e5e73125aef6210 Mon Sep 17 00:00:00 2001
From: Chris Jones <christopher.jones@arm.com>
Date: Wed, 31 Mar 2021 16:09:28 +0100
Subject: [PATCH] Add exception in check when high error code == 0

Although not commonly done, it should be possible to add error codes
together even if the high level error code is equal to zero.

Signed-off-by: Chris Jones <christopher.jones@arm.com>
---
 tests/src/helpers.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/src/helpers.c b/tests/src/helpers.c
index 881967409..9c1198ea3 100644
--- a/tests/src/helpers.c
+++ b/tests/src/helpers.c
@@ -298,7 +298,7 @@ void mbedtls_test_err_add_check( int high, int low,
      * h = high level error code (includes high and module error codes).
      * l = low level error code.
      */
-    if ( high > -0x1000 )               // high < 0001000000000000
+    if ( high > -0x1000 && high != 0 )  // high < 0001000000000000
     {
         mbedtls_test_fail( "'high' is not a high-level error code",
                             line, file );