gcc/testsuite/gcc.dg/redecl-12.c

   1 /* Some incompatible external linkage declarations were not diagnosed.
   2    Bug 21342.  */
   3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   4 /* { dg-do compile } */
   5 /* { dg-options "" } */
   6
   7 extern int a[];
   8 void f(void) { extern int a[]; extern int a[10]; } /* { dg-message "note: previous declaration of 'a'" "note" } */
   9 extern int a[5]; /* { dg-error "conflicting types for 'a'" } */