gcc/testsuite/gcc.dg/union-cast-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-std=c99 -pedantic-errors" } */
   3 /* PR 23155
   4    We should get one error messag, one about union cast. */
   5
   6
   7 union vx {short f[8]; int v;};
   8 int vec;
   9
  10 void
  11 foo5 (int vec)
  12 {
  13   ((union vx) vec).f[5] = 1; /* { dg-error "forbids casts to union type" } */
  14 }