gcc/testsuite/gcc.dg/Wnested-externs-1.c

   1 /* Test -Wnested-externs.  */
   2 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-Wnested-externs" } */
   5
   6 int a;
   7 static int b;
   8 extern int c;
   9 void f0(void);
  10 static void f1(void);
  11
  12 void
  13 g(void)
  14 {
  15   extern int a; /* { dg-warning "nested extern declaration of 'a'" } */
  16   extern int b; /* { dg-warning "nested extern declaration of 'b'" } */
  17   extern int c; /* { dg-warning "nested extern declaration of 'c'" } */
  18   extern int d; /* { dg-warning "nested extern declaration of 'd'" } */
  19   extern void f0(void); /* { dg-warning "nested extern declaration of 'f0'" } */
  20   extern void f1(void); /* { dg-warning "nested extern declaration of 'f1'" } */
  21   extern void f2(void); /* { dg-warning "nested extern declaration of 'f2'" } */
  22 }