clang/test/PCH/ms-pch-macro.c

   1 // Test -D and -U interaction with a PCH when -fms-extensions is enabled.
   2
   3 // RUN: %clang_cc1 -DFOO %S/variables.h -emit-pch -o %t1.pch
   4
   5 // RUN: not %clang_cc1 -DFOO=blah -DBAR=int -include-pch %t1.pch -pch-through-header=%S/variables.h %s 2> %t.err
   6 // RUN: FileCheck -check-prefix=CHECK-FOO %s < %t.err
   7
   8 // RUN: not %clang_cc1 -UFOO -DBAR=int -include-pch %t1.pch %s -pch-through-header=%S/variables.h 2> %t.err
   9 // RUN: FileCheck -check-prefix=CHECK-NOFOO %s < %t.err
  10
  11 // RUN: %clang_cc1 -include-pch %t1.pch -DBAR=int -pch-through-header=%S/variables.h -verify %s
  12
  13 // Enabling MS extensions should allow us to add BAR definitions.
  14 // RUN: %clang_cc1 -DMSEXT -fms-extensions -DFOO %S/variables.h -emit-pch -o %t1.pch
  15 // RUN: %clang_cc1 -DMSEXT -fms-extensions -include-pch %t1.pch -DBAR=int -pch-through-header=%S/variables.h -verify %s
  16
  17 #include "variables.h"
  18
  19 BAR bar = 17;
  20 #ifndef MSEXT
  21 // expected-error@-2 {{unknown type name 'BAR'}}
  22 #endif
  23
  24 #ifndef FOO
  25 #  error FOO was not defined
  26 #endif
  27
  28 #if FOO != 1
  29 #  error FOO has the wrong definition
  30 #endif
  31
  32 #if defined(MSEXT) && !defined(BAR)
  33 #  error BAR was not defined
  34 #endif
  35
  36 // CHECK-FOO: definition of macro 'FOO' differs between the precompiled header ('1') and the command line ('blah')
  37 // CHECK-NOFOO: macro 'FOO' was defined in the precompiled header but undef'd on the command line
  38
  39 // expected-warning@1 {{definition of macro 'BAR' does not match definition in precompiled header}}