From: Ulrich Drepper <drepper@gcc.gnu.org>
Date: Mon, 4 Oct 1999 22:12:37 +0000 (+0000)
Subject: Test for not using results of va_arg calls.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ed9e042da2a9a6508471d601080153c7e6ca8b83;p=gcc.git

Test for not using results of va_arg calls.

From-SVN: r29814
---

diff --git a/gcc/testsuite/gcc.c-torture/execute/va-arg-11.c b/gcc/testsuite/gcc.c-torture/execute/va-arg-11.c
new file mode 100644
index 00000000000..349c125ed50
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/va-arg-11.c
@@ -0,0 +1,29 @@
+/* Test va_arg when the result is ignored and only the pointer increment
+   side effect is used.  */
+#include <stdarg.h>
+
+static int
+foo (int a, ...)
+{
+  va_list va;
+  int i, res;
+
+  va_start (va, a);
+
+  for (i = 0; i < 4; ++i)
+    (void) va_arg (va, int);
+
+  res = va_arg (va, int);
+
+  va_end (va);
+
+  return res;
+}
+
+int
+main (void)
+{
+  if (foo (5, 4, 3, 2, 1, 0))
+    abort ();
+  return 0;
+}