8edd3464af
WG14 adopted N2645 and WG21 EWG has accepted P2334 in principle (still subject to full EWG vote + CWG review + plenary vote), which add support for #elifdef as shorthand for #elif defined and #elifndef as shorthand for #elif !defined. This patch adds support for the new preprocessor directives.
39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
// RUN: %clang_cc1 %s -Eonly -verify
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// This should not be rejected.
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#ifdef defined
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#elifdef defined
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#endif
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// PR3764
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// This should not produce a redefinition warning.
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#define FUNC_LIKE(a) (a)
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#define FUNC_LIKE(a)(a)
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// This either.
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#define FUNC_LIKE2(a)\
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(a)
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#define FUNC_LIKE2(a) (a)
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// This should.
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#define FUNC_LIKE3(a) ( a) // expected-note {{previous definition is here}}
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#define FUNC_LIKE3(a) (a) // expected-warning {{'FUNC_LIKE3' macro redefined}}
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// RUN: %clang_cc1 -fms-extensions -DMS_EXT %s -Eonly -verify
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#ifndef MS_EXT
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// This should under C99.
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#define FUNC_LIKE4(a,b) (a+b) // expected-note {{previous definition is here}}
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#define FUNC_LIKE4(x,y) (x+y) // expected-warning {{'FUNC_LIKE4' macro redefined}}
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#else
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// This shouldn't under MS extensions.
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#define FUNC_LIKE4(a,b) (a+b)
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#define FUNC_LIKE4(x,y) (x+y)
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// This should.
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#define FUNC_LIKE5(a,b) (a+b) // expected-note {{previous definition is here}}
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#define FUNC_LIKE5(x,y) (y+x) // expected-warning {{'FUNC_LIKE5' macro redefined}}
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#endif
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