tools: xen-mceinj: Add missing return value checks

The return value of vasprintf must be checked. This check is enforced
with the compiler options used in Debian by request and in Ubuntu by
default.

Check the return value and abort on error.

Signed-off-by: Bastian Blank <waldi@debian.org>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
(cherry picked from commit 1efe90faa31be104a24fe75323429d227eae1d9f)
(cherry picked from commit e36c0917dd54c932816e11a525f294101c77557d)

1 files changed, 4 insertions, 2 deletions

diff --git a/tools/tests/mce-test/tools/xen-mceinj.c b/tools/tests/mce-test/tools/xen-mceinj.c
index b69c65dd8a..2519d58f38 100644
--- a/tools/tests/mce-test/tools/xen-mceinj.c
+++ b/tools/tests/mce-test/tools/xen-mceinj.c
@@ -92,7 +92,8 @@ static void Lprintf(const char *fmt, ...)
     va_list args;
 
     va_start(args, fmt);
-    vasprintf(&buf, fmt, args);
+    if (vasprintf(&buf, fmt, args) < 0)
+        abort();
     fprintf(LOGFILE, "%s", buf);
     va_end(args);
     free(buf);
@@ -104,7 +105,8 @@ static void err(xc_interface *xc_handle, const char *fmt, ...)
     va_list args;
 
     va_start(args, fmt);
-    vasprintf(&buf, fmt, args);
+    if (vasprintf(&buf, fmt, args) < 0)
+        abort();
     perror(buf);
     va_end(args);
     free(buf);