gcc/testsuite/gcc.dg/c23-empty-init-3.c

   1 /* Test empty initializers diagnosed in C23 mode with -Wc11-c23-compat.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=c23 -Wc11-c23-compat" } */
   4
   5 struct s { int a; };
   6 struct s s = {}; /* { dg-warning "empty initializer" } */
   7 int x = {}; /* { dg-warning "empty initializer" } */
   8 float y = {}; /* { dg-warning "empty initializer" } */
   9 void *p = {}; /* { dg-warning "empty initializer" } */
  10 union u { int a; long b; };
  11 union u z = {}; /* { dg-warning "empty initializer" } */
  12 int aa[2] = {}; /* { dg-warning "empty initializer" } */
  13
  14 void
  15 f (int a)
  16 {
  17   int vla[a] = {}; /* { dg-warning "empty initializer" } */
  18   struct s as = {}; /* { dg-warning "empty initializer" } */
  19   int ax = {}; /* { dg-warning "empty initializer" } */
  20   float ay = {}; /* { dg-warning "empty initializer" } */
  21   void *ap = {}; /* { dg-warning "empty initializer" } */
  22   union u az = {}; /* { dg-warning "empty initializer" } */
  23   int aaa[2] = {}; /* { dg-warning "empty initializer" } */
  24   int t = (int) {}; /* { dg-warning "empty initializer" } */
  25 }