gcc/testsuite/gcc.dg/vla-stexp-5.c

   1 /* PR29970 */
   2 /* { dg-do run } */
   3 /* { dg-options "-Wunused-variable" } */
   4 /* { dg-require-effective-target alloca } */
   5
   6
   7
   8
   9 int foo2a(void)   // should not ICE
  10 {
  11         return ({ int n = 20; struct { int x[n];} x; x.x[12] = 1; sizeof(x); });
  12 }
  13
  14
  15 int foo2b(void)   // should not ICE
  16 {
  17         return sizeof *({ int n = 20; struct { int x[n];} x; x.x[12] = 1; &x; });
  18 }
  19
  20 int main()
  21 {
  22         if (sizeof(struct { int x[20]; }) != foo2a())
  23                 __builtin_abort();
  24
  25         if (sizeof(struct { int x[20]; }) != foo2b())
  26                 __builtin_abort();
  27
  28         return 0;
  29 }
  30
  31