1c1a00cf51
for a token is set, this makes the diagnostic "expanded from stack" work for this diagnostic. Add a testcase for PR3918. llvm-svn: 69544
34 lines
1.5 KiB
C
34 lines
1.5 KiB
C
// RUN: clang-cc -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 ## + // expected-error {{pasting formed 'x', an invalid preprocessing token}}
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XYZ
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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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