clang/test/Preprocessor/macro_misc.c

   1 // RUN: %clang_cc1 %s -Eonly -verify
   2
   3 // This should not be rejected.
   4 #ifdef defined
   5 #elifdef defined
   6 #endif
   7 // expected-warning@-2 {{use of a '#elifdef' directive is a C2x extension}}
   8
   9
  10
  11 // PR3764
  12
  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 -verify
  27 #ifndef MS_EXT
  28 // 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 #else
  32 // 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 #endif