| // RUN: %clang_cc1 -Eonly -verify -pedantic %s |
| // pasting ""x"" and ""+"" does not give a valid preprocessing token |
| #define XYZ x ## + |
| XYZ // expected-error {{pasting formed 'x+', an invalid preprocessing token}} |
| #define XXYZ . ## test |
| XXYZ // expected-error {{pasting formed '.test', an invalid preprocessing token}} |
| |
| // GCC PR 20077 |
| |
| #define a a ## ## // expected-error {{'##' cannot appear at end of macro expansion}} |
| #define b() b ## ## // expected-error {{'##' cannot appear at end of macro expansion}} |
| #define c c ## // expected-error {{'##' cannot appear at end of macro expansion}} |
| #define d() d ## // expected-error {{'##' cannot appear at end of macro expansion}} |
| |
| |
| #define e ## ## e // expected-error {{'##' cannot appear at start of macro expansion}} |
| #define f() ## ## f // expected-error {{'##' cannot appear at start of macro expansion}} |
| #define g ## g // expected-error {{'##' cannot appear at start of macro expansion}} |
| #define h() ## h // expected-error {{'##' cannot appear at start of macro expansion}} |
| #define i ## // expected-error {{'##' cannot appear at start of macro expansion}} |
| #define j() ## // expected-error {{'##' cannot appear at start of macro expansion}} |
| |
| // Invalid token pasting. |
| // PR3918 |
| |
| // When pasting creates poisoned identifiers, we error. |
| #pragma GCC poison BLARG |
| BLARG // expected-error {{attempt to use a poisoned identifier}} |
| #define XX BL ## ARG |
| XX // expected-error {{attempt to use a poisoned identifier}} |
| |
| #define VA __VA_ ## ARGS__ |
| int VA; // expected-warning {{__VA_ARGS__ can only appear in the expansion of a C99 variadic macro}} |
| |
| |
