gcc/testsuite/gcc.dg/enum-const-2.c

   1 /* Test for enumeration constants not integer constant expressions but
   2    folding to integer constants (used in Linux kernel,
   3    <http://gcc.gnu.org/ml/gcc/2009-04/msg00677.html>).  */
   4 /* { dg-do compile } */
   5 /* { dg-options "-pedantic" } */
   6
   7 extern int i;
   8 enum e { E = (1 ? 1 : i) }; /* { dg-warning "not an integer constant expression" } */