--- /dev/null
+/* { dg-do run } */
+/* { dg-options "-std=gnu89" } */
+
+/* In standard C, enumeration constants always have type int. If they
+ are not representables are int, they're ill-formed. In GNU C, we
+ give such ill-formed constructs well-defined meaning. Make sure it
+ works. */
+
+#include <stdlib.h>
+
+enum foo
+{
+ foo1 = 0,
+ foo2 = 0xffffffffffffffffULL,
+ foo3 = 0xf0fffffffffffffeULL
+};
+
+int main ()
+{
+ if (sizeof (enum foo) != sizeof (unsigned long long))
+ abort ();
+ exit (0);
+}