1 // { dg-do preprocess }
2 // { dg-options "-std=gnu99 -fdiagnostics-show-option -Werror=multichar" }
3 /* { dg-message "some warnings being treated as errors" "" {target "*-*-*"} 0 } */
4 #if 'ab' // { dg-error "multi-character character constant .-Werror=multichar." }
5 #endif
6