gcc/testsuite/gcc.dg/case-const-3.c

   1 /* Test for case labels not integer constant expressions but folding
   2    to integer constants (used in Linux kernel, PR 39613).  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-pedantic-errors" } */
   5
   6 extern int i;
   7 void
   8 f (int c)
   9 {
  10   switch (c)
  11     {
  12     case (1 ? 1 : i): /* { dg-error "case label is not an integer constant expression" } */
  13       ;
  14     }
  15 }