gcc/testsuite/gcc.dg/c99-init-2.c

   1 /* Test for C99 designated initializer warnings and errors */
   2 /* Origin: Jakub Jelinek <jakub@redhat.com> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=iso9899:1999 -Wall -pedantic-errors" } */
   5
   6 typedef struct {
   7   int B;
   8   short C[2];
   9 } A;
  10 A a = { [2] = 1 };                      /* { dg-error "(array index in non-array)|(near initialization)" } */
  11 int b[] = { .B = 1 };                   /* { dg-error "(field name not in record)|(near initialization)" } */
  12 A c[] = { [0].D = 1 };                  /* { dg-error "unknown field" } */
  13 int d;
  14 int e = { d++ };                        /* { dg-error "(is not constant)|(near initialization)" } */
  15 A f[2] = { [0].C[0] = 1, [2] = { 2, { 1, 2 } } };/* { dg-error "(array index in initializer exceeds array bounds)|(near initialization)" } */
  16 int g[4] = { [1] = 1, 2, [6] = 5 };     /* { dg-error "(array index in initializer exceeds array bounds)|(near initialization)" } */
  17 int h[] = { [0 ... 3] = 5 };            /* { dg-error "forbids specifying range of elements" } */
  18 int i[] = { [2] 4 };                    /* { dg-error "use of designated initializer without" } */
  19 A j = { B: 2 };                         /* { dg-error "use of designated initializer with " } */
  20
  21 void foo (int *, A *);
  22
  23 void bar (void)
  24 {
  25   int a[] = { d++, [0] = 1 };           /* { dg-warning "(initialized field with side-effects overwritten)|(near initialization)" } */
  26   A b = { 1, { d++, 2 }, .C[0] = 3 };/* { dg-warning "(initialized field with side-effects overwritten)|(near initialization)" } */
  27   A c = { d++, { 2, 3 }, .B = 4 };      /* { dg-warning "(initialized field with side-effects overwritten)|(near initialization)" } */
  28
  29   foo (a, d ? &b : &c);
  30 }