gcc/testsuite/gcc.dg/redecl-14.c

   1 /* Some incompatible external linkage declarations were not diagnosed.
   2    Bug 21342.  Test type in inner scope is correct.  */
   3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   4 /* { dg-do compile } */
   5 /* { dg-options "" } */
   6
   7 typedef int IA[];
   8 typedef int IA5[5];
   9 typedef IA *IAP;
  10 typedef IA5 *IA5P;
  11 extern IAP a[];
  12 void
  13 f (void)
  14 {
  15   {
  16     extern IA5P a[];
  17     sizeof (*a[0]);
  18   }
  19   extern IAP a[];
  20   extern IAP a[5];
  21   sizeof (*a[0]); /* { dg-error "invalid application of 'sizeof' to incomplete type 'IA' {aka 'int\\\[\\\]'}" } */
  22 }