gcc/testsuite/gcc.dg/c23-labels-2.c

   1 /* Tests for labels before declarations and at ends of compound statements.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=c23 -Wc11-c23-compat" } */
   4
   5 int f(int x)
   6 {
   7         goto b;
   8         a: int i = 2 * x;       /* { dg-warning "a label can only be part of a statement and a declaration is not a statement" } */
   9            goto c;
  10         b: goto a;
  11         { i *= 3; c: }          /* { dg-warning "label at end of compound statement" } */
  12         return i;
  13         d:                      /* { dg-warning "label at end of compound statement" } */
  14 }
  15