1  /* { dg-do compile } */
       2  /* { dg-options "-O0 -dA -gbtf -mco-re" } */
       3  
       4  struct F {
       5    int bar;
       6    char c;
       7    int baz;
       8    int arr[];
       9  };
      10  
      11  enum {
      12    FIELD_BYTE_OFFSET = 0,
      13    FIELD_BYTE_SIZE = 1,
      14  };
      15  
      16  unsigned int test (struct F *f) {
      17  
      18    unsigned x = __builtin_preserve_field_info (f->arr, FIELD_BYTE_SIZE); /* { dg-error "unsupported variable size field access" } */
      19  
      20    unsigned y = __builtin_preserve_field_info (f->baz, 99); /* { dg-error "invalid second argument to built-in function" } */
      21  
      22    return x + y;
      23  }