40 lines · c
1// RUN: %clang_cc1 %s -Eonly -verify2 3// This should not be rejected.4#ifdef defined5#elifdef defined6#endif7// expected-warning@-2 {{use of a '#elifdef' directive is a C23 extension}}8 9 10 11// PR376412 13// This should not produce a redefinition warning.14#define FUNC_LIKE(a) (a)15#define FUNC_LIKE(a)(a)16 17// This either.18#define FUNC_LIKE2(a)\19(a)20#define FUNC_LIKE2(a) (a)21 22// This should.23#define FUNC_LIKE3(a) ( a) // expected-note {{previous definition is here}}24#define FUNC_LIKE3(a) (a) // expected-warning {{'FUNC_LIKE3' macro redefined}}25 26// RUN: %clang_cc1 -fms-extensions -DMS_EXT %s -Eonly -verify27#ifndef MS_EXT28// This should under C99.29#define FUNC_LIKE4(a,b) (a+b) // expected-note {{previous definition is here}}30#define FUNC_LIKE4(x,y) (x+y) // expected-warning {{'FUNC_LIKE4' macro redefined}}31#else32// This shouldn't under MS extensions.33#define FUNC_LIKE4(a,b) (a+b)34#define FUNC_LIKE4(x,y) (x+y)35 36// This should.37#define FUNC_LIKE5(a,b) (a+b) // expected-note {{previous definition is here}}38#define FUNC_LIKE5(x,y) (y+x) // expected-warning {{'FUNC_LIKE5' macro redefined}}39#endif40