1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/fixed-point/func-vararg-size0.c b/gcc/testsuite/gcc.dg/fixed-point/func-vararg-size0.c
new file mode 100644
index 000000000..7c54e91b2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/fixed-point/func-vararg-size0.c
@@ -0,0 +1,46 @@
+/* { dg-do run } */
+/* { dg-options "-std=gnu99" } */
+
+/* C99 6.5.2.2 Function calls.
+   Based on the test from ../dfp/.  */
+
+#include <stdarg.h>
+
+extern void abort (void);
+
+struct S1
+{
+  struct
+  {
+    _Fract e;
+  } b[0];
+};
+
+/* Test handling vararg parameters whose size is 0.  */
+
+int check_var(int z,...)
+{
+  double d;
+  struct S1 s1;
+  long long result;
+  va_list ap;
+  va_start (ap, z);
+  d = va_arg (ap, double);
+  s1 = va_arg (ap, struct S1);
+  result = va_arg (ap, long long);
+  va_end (ap);
+  return (result == 2LL);
+
+}
+
+int
+main ()
+{
+  struct S1 s1;
+  struct S1 a1[5];
+
+  if (check_var(5, 1.0, s1, 2LL, a1[2], a1[2]) == 0)
+    abort ();
+
+  return 0;
+}