1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/Wunused-value-2.c b/gcc/testsuite/gcc.dg/Wunused-value-2.c
new file mode 100644
index 000000000..4858bfade
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wunused-value-2.c
@@ -0,0 +1,18 @@
+/* Test -Wunused-value.  Bug 30729.  */
+/* { dg-do compile } */
+/* { dg-options "-Wunused-value" } */
+/* Make sure va_arg does not cause a value computed is not used warning
+   because it has side effects.   */
+#include <stdarg.h>
+
+int f(int t, ...)
+{
+  va_list a;
+  va_start (a, t);
+  va_arg(a, int);/* { dg-bogus "value computed is not used" } */
+  int t1 = va_arg(a, int);
+  va_end(a);
+  return t1;
+}
+
+