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// 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}}
#define LOG_ON_ERROR(x) x ## #y; // expected-error {{'#' is not followed by a macro parameter}}
LOG_ON_ERROR(0);
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