1  /* PR preprocessor/27777 */
       2  /* { dg-do preprocess } */
       3  /* { dg-options { -trigraphs -Wall } } */
       4  
       5  #error "BUG??!"
       6  /* { dg-error "BUG" "" { target *-*-* } .-1 } */
       7  /* { dg-warning "trigraph" "" { target *-*-* } .-2 } */