clang/test/Lexer/has_extension.c

   1 // RUN: %clang_cc1 -std=c99 -E %s -o - | FileCheck --check-prefix=CHECK-PED-NONE %s
   2 // RUN: %clang_cc1 -std=c99 -pedantic-errors -E %s -o - | FileCheck --check-prefix=CHECK-PED-ERR %s
   3
   4 // CHECK-PED-NONE: no_dummy_extension
   5 #if !__has_extension(dummy_extension)
   6 int no_dummy_extension();
   7 #endif
   8
   9 // Arbitrary feature to test that has_extension is a superset of has_feature
  10 // CHECK-PED-NONE: attribute_overloadable
  11 #if __has_extension(attribute_overloadable)
  12 int attribute_overloadable();
  13 #endif
  14
  15 // CHECK-PED-NONE: has_c_static_assert
  16 // CHECK-PED-ERR: no_c_static_assert
  17 #if __has_extension(c_static_assert)
  18 int has_c_static_assert();
  19 #else
  20 int no_c_static_assert();
  21 #endif
  22
  23 // CHECK-PED-NONE: has_c_generic_selections
  24 // CHECK-PED-ERR: no_c_generic_selections
  25 #if __has_extension(c_generic_selections)
  26 int has_c_generic_selections();
  27 #else
  28 int no_c_generic_selections();
  29 #endif
  30
  31 // CHECK-PED-NONE: has_c_alignas
  32 // CHECK-PED-ERR: no_c_alignas
  33 #if __has_extension(c_alignas)
  34 int has_c_alignas();
  35 #else
  36 int no_c_alignas();
  37 #endif
  38
  39 // CHECK-PED-NONE: has_c_alignof
  40 // CHECK-PED-ERR: no_c_alignof
  41 #if __has_extension(c_alignof)
  42 int has_c_alignof();
  43 #else
  44 int no_c_alignof();
  45 #endif
  46
  47 // Arbitrary feature to test that the extension name can be surrounded with
  48 // double underscores.
  49 // CHECK-PED-NONE: has_double_underscores
  50 #if __has_extension(__c_alignas__)
  51 int has_double_underscores();
  52 #endif