1 files changed, 17 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/errno-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/errno-1.c
new file mode 100644
index 000000000..295deefbe
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/errno-1.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+#include <errno.h>
+#include <stdlib.h>
+
+int main()
+{
+  void * volatile p;
+  errno = 0;
+  p = malloc (-1);
+  if (errno != 0)
+    do_not_optimize_away ();
+  return 0;
+}
+
+/* { dg-final { scan-assembler "do_not_optimize_away" } } */