clang/test/Lexer/builtin_redef.c

   1 // RUN: %clang_cc1 %s -D__TIME__=1234 -U__DATE__ -D__STDC__=1 -U__STDC_HOSTED__ -E 2>&1 | FileCheck %s --check-prefix=CHECK-OUT
   2 // RUN: %clang_cc1 %s -D__TIME__=1234 -U__DATE__ -D__STDC__=1 -U__STDC_HOSTED__ -E 2>&1 | FileCheck %s --check-prefix=CHECK-WARN
   3 // RUN: not %clang_cc1 %s -D__TIME__=1234 -U__DATE__ -D__STDC__=1 -U__STDC_HOSTED__ -E 2>&1 -pedantic-errors | FileCheck %s --check-prefix=CHECK-ERR
   4
   5 // CHECK-WARN: <command line>:{{.*}} warning: redefining builtin macro
   6 // CHECK-WARN-NEXT: #define __TIME__ 1234
   7 // CHECK-WARN: <command line>:{{.*}} warning: undefining builtin macro
   8 // CHECK-WARN-NEXT: #undef __DATE__
   9 // CHECK-WARN: <command line>:{{.*}} warning: redefining builtin macro
  10 // CHECK-WARN-NEXT: #define __STDC__ 1
  11 // CHECK-WARN: <command line>:{{.*}} warning: undefining builtin macro
  12 // CHECK-WARN-NEXT: #undef __STDC_HOSTED__
  13
  14 // CHECK-ERR: <command line>:{{.*}} error: redefining builtin macro
  15 // CHECK-ERR-NEXT: #define __TIME__ 1234
  16 // CHECK-ERR: <command line>:{{.*}} error: undefining builtin macro
  17 // CHECK-ERR-NEXT: #undef __DATE__
  18 // CHECK-ERR: <command line>:{{.*}} error: redefining builtin macro
  19 // CHECK-ERR-NEXT: #define __STDC__ 1
  20 // CHECK-ERR: <command line>:{{.*}} error: undefining builtin macro
  21 // CHECK-ERR-NEXT: #undef __STDC_HOSTED__
  22
  23 int n = __TIME__;
  24 __DATE__
  25
  26 #define __FILE__ "my file"
  27 // CHECK-WARN: :[[@LINE-1]]:9: warning: redefining builtin macro
  28 // CHECK-ERR: :[[@LINE-2]]:9: error: redefining builtin macro
  29
  30 // CHECK-OUT: int n = 1234;
  31 // CHECK-OUT: __DATE__