gcc/testsuite/gcc.dg/Wshadow-2.c

   1 /* Bogus warning for a double declaration of the same extern variable,
   2    first at file scope, then at block scope.  PR 13129.  */
   3
   4 /* { dg-options "-Wshadow" } */
   5
   6 extern struct foo bar;
   7 void dummy()
   8 {
   9   extern struct foo bar;  /* { dg-bogus "shadows" } */
  10 }