derek.holloway
7502bf64a4
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45 lines
2.3 KiB
C
45 lines
2.3 KiB
C
// RUN: %clang_cc1 -Eonly -verify -pedantic %s
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// pasting ""x"" and ""+"" does not give a valid preprocessing token
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#define XYZ x ## +
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XYZ // expected-error {{pasting formed 'x+', an invalid preprocessing token}}
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#define XXYZ . ## test
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XXYZ // expected-error {{pasting formed '.test', an invalid preprocessing token}}
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// GCC PR 20077
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#define a a ## ## // expected-error {{'##' cannot appear at end of macro expansion}}
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#define b() b ## ## // expected-error {{'##' cannot appear at end of macro expansion}}
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#define c c ## // expected-error {{'##' cannot appear at end of macro expansion}}
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#define d() d ## // expected-error {{'##' cannot appear at end of macro expansion}}
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#define e ## ## e // expected-error {{'##' cannot appear at start of macro expansion}}
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#define f() ## ## f // expected-error {{'##' cannot appear at start of macro expansion}}
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#define g ## g // expected-error {{'##' cannot appear at start of macro expansion}}
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#define h() ## h // expected-error {{'##' cannot appear at start of macro expansion}}
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#define i ## // expected-error {{'##' cannot appear at start of macro expansion}}
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#define j() ## // expected-error {{'##' cannot appear at start of macro expansion}}
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// Invalid token pasting.
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// PR3918
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// When pasting creates poisoned identifiers, we error.
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#pragma GCC poison BLARG
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BLARG // expected-error {{attempt to use a poisoned identifier}}
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#define XX BL ## ARG
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XX // expected-error {{attempt to use a poisoned identifier}}
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#define VA __VA_ ## ARGS__
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int VA; // expected-warning {{__VA_ARGS__ can only appear in the expansion of a C99 variadic macro}}
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#define LOG_ON_ERROR(x) x ## #y; // expected-error {{'#' is not followed by a macro parameter}}
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LOG_ON_ERROR(0);
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#define PR21379A(x) printf ##x // expected-note {{macro 'PR21379A' defined here}}
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PR21379A(0 {, }) // expected-error {{too many arguments provided to function-like macro invocation}}
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// expected-note@-1 {{parentheses are required around macro argument containing braced initializer list}}
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#define PR21379B(x) printf #x // expected-note {{macro 'PR21379B' defined here}}
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PR21379B(0 {, }) // expected-error {{too many arguments provided to function-like macro invocation}}
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// expected-note@-1 {{parentheses are required around macro argument containing braced initializer list}}
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