1 // RUN: %clang_cc1 -Eonly -verify -pedantic %s 2 // pasting ""x"" and ""+"" does not give a valid preprocessing token 3 #define XYZ x ## + 4 XYZ // expected-error {{pasting formed 'x+', an invalid preprocessing token}} 5 #define XXYZ . ## test 6 XXYZ // expected-error {{pasting formed '.test', an invalid preprocessing token}} 7 8 // GCC PR 20077 9 10 #define a a ## ## // expected-error {{'##' cannot appear at end of macro expansion}} 11 #define b() b ## ## // expected-error {{'##' cannot appear at end of macro expansion}} 12 #define c c ## // expected-error {{'##' cannot appear at end of macro expansion}} 13 #define d() d ## // expected-error {{'##' cannot appear at end of macro expansion}} 14 15 16 #define e ## ## e // expected-error {{'##' cannot appear at start of macro expansion}} 17 #define f() ## ## f // expected-error {{'##' cannot appear at start of macro expansion}} 18 #define g ## g // expected-error {{'##' cannot appear at start of macro expansion}} 19 #define h() ## h // expected-error {{'##' cannot appear at start of macro expansion}} 20 #define i ## // expected-error {{'##' cannot appear at start of macro expansion}} 21 #define j() ## // expected-error {{'##' cannot appear at start of macro expansion}} 22 23 // Invalid token pasting. 24 // PR3918 25 26 // When pasting creates poisoned identifiers, we error. 27 #pragma GCC poison BLARG 28 BLARG // expected-error {{attempt to use a poisoned identifier}} 29 #define XX BL ## ARG 30 XX // expected-error {{attempt to use a poisoned identifier}} 31 32 #define VA __VA_ ## ARGS__ 33 int VA; // expected-warning {{__VA_ARGS__ can only appear in the expansion of a C99 variadic macro}} 34 35 #define LOG_ON_ERROR(x) x ## #y; // expected-error {{'#' is not followed by a macro parameter}} 36 LOG_ON_ERROR(0); 37 38 #define PR21379A(x) printf ##x // expected-note {{macro 'PR21379A' defined here}} 39 PR21379A(0 {, }) // expected-error {{too many arguments provided to function-like macro invocation}} 40 // expected-note@-1 {{parentheses are required around macro argument containing braced initializer list}} 41 42 #define PR21379B(x) printf #x // expected-note {{macro 'PR21379B' defined here}} 43 PR21379B(0 {, }) // expected-error {{too many arguments provided to function-like macro invocation}} 44 // expected-note@-1 {{parentheses are required around macro argument containing braced initializer list}} 45
