[libvirt] [PATCH] Reset the whole stack in testutils

[Martin Kletzander]

The memset() was resetting only 30 bytes in the array (size of the
array), but it is array of pointers.  Since it is a static array,
let's just reset it by its size.

Found by gcc-7.1:

  testutils.c: In function 'virTestRun':
  testutils.c:243:13: error: 'memset' used with length equal to number
  of elements without multiplication by element size [-Werror=memset-elt-size]
    memset(testAllocStack, 0, ARRAY_CARDINALITY(testAllocStack));
    ^~~~~~

Signed-off-by: Martin Kletzander <mkletzan at redhat.com>
---
Pushed as trivial an also under the build-breaker rule.

I'm still getting one more error in config.h that probably needs
fixing in autoconf:

../config.h:2994:48: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
             || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \

Let me know if you know how I could help with that.

 tests/testutils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/testutils.c b/tests/testutils.c
index 4fb2338bb1de..4b8cf79ef939 100644
--- a/tests/testutils.c
+++ b/tests/testutils.c
@@ -240,7 +240,7 @@ virTestRun(const char *title,
         for (i = start; i < end; i++) {
             bool missingFail = false;
 # ifdef TEST_OOM_TRACE
-            memset(testAllocStack, 0, ARRAY_CARDINALITY(testAllocStack));
+            memset(testAllocStack, 0, sizeof(testAllocStack));
             ntestAllocStack = 0;
 # endif
             virAllocTestOOM(i + 1, 1);
--
2.13.0