gcc/testsuite/gcc.dg/decl-6.c

   1 /* { dg-do compile } */
   2
   3 extern int var;
   4
   5 int foo1(void)
   6 {
   7   extern int var;
   8
   9   var += 1;
  10 }
  11
  12 int foo2(void)
  13 {
  14   var += 1;
  15 }