--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/cilk-plus/CK/varargs_test.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,47 @@
+/* { dg-do run } */
+/* { dg-require-effective-target cilkplus_runtime } */
+/* { dg-options "-fcilkplus" } */
+
+#include <stdarg.h>
+#include <stdlib.h>
+
+
+double compute_total (int no_elements, ...);
+
+int main(void)
+{
+  double array[5] = {5.0, 4.0, 9.0, 3.0, 4.0};
+  double array2[5] = {5.0, 6.0, 8.0, 6.0};
+  double yy=0, xx=0, xx_serial, yy_serial;
+
+  yy = _Cilk_spawn compute_total(5,array[0],array[1],array[2],
+                                 array[3], array[4]);
+  xx= compute_total(4,array2[0],array2[1],array2[2], array2[3]);
+  
+  _Cilk_sync;
+
+  yy_serial = compute_total(5,array[0],array[1],array[2], array[3], array[4]);
+  xx_serial = compute_total(4,array2[0],array2[1],array2[2], array2[3]);
+
+  if ((xx + yy) != (xx_serial + yy_serial)) 
+    return 1;
+  return 0;
+  
+}
+
+
+double compute_total (int no_elements, ...)
+{
+  double total = 0;
+  va_list args;
+  va_start(args, no_elements);
+  int ii = 0;
+  for (ii = 0; ii < no_elements; ii++)
+  {
+    total += va_arg(args,double);
+  }
+  va_end(args);
+
+  return total;
+}
+