clang/test/Preprocessor/microsoft-ext.c

   1 // RUN: %clang_cc1 -E -fms-compatibility %s -o %t
   2 // RUN: FileCheck %s < %t
   3
   4 # define M2(x, y) x + y
   5 # define P(x, y) {x, y}
   6 # define M(x, y) M2(x, P(x, y))
   7 M(a, b) // CHECK: a + {a, b}
   8
   9 // Regression test for PR13924
  10 #define GTEST_CONCAT_TOKEN_(foo, bar) GTEST_CONCAT_TOKEN_IMPL_(foo, bar)
  11 #define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo ## bar
  12
  13 #define GMOCK_INTERNAL_COUNT_AND_2_VALUE_PARAMS(p0, p1) P2
  14
  15 #define GMOCK_ACTION_CLASS_(name, value_params)\
  16     GTEST_CONCAT_TOKEN_(name##Action, GMOCK_INTERNAL_COUNT_##value_params)
  17
  18 #define ACTION_TEMPLATE(name, template_params, value_params)\
  19 class GMOCK_ACTION_CLASS_(name, value_params) {\
  20 }
  21
  22 ACTION_TEMPLATE(InvokeArgument,
  23                 HAS_1_TEMPLATE_PARAMS(int, k),
  24                 AND_2_VALUE_PARAMS(p0, p1));
  25
  26 // Regression test for PR43282; check that we match MSVC's failure to unpack
  27 // __VA_ARGS__ unless forwarded through another macro.
  28 #define THIRD_ARGUMENT(A, B, C, ...) C
  29 #define TEST(...) THIRD_ARGUMENT(__VA_ARGS__, 1, 2)
  30 #define COMBINE(...) __VA_ARGS__
  31 #define WRAPPED_TEST(...) COMBINE(THIRD_ARGUMENT(__VA_ARGS__, 1, 2))
  32 // Check that we match MSVC's failure to unpack __VA_ARGS__, unless forwarded
  33 // through another macro
  34 auto packed = TEST(,);
  35 auto unpacked = WRAPPED_TEST(,);
  36 // CHECK: auto packed = 2;
  37 // CHECK: auto unpacked = 1;
  38
  39 // This tests compatibility with behaviour needed for type_traits in VS2012
  40 // Test based on _VARIADIC_EXPAND_0X macros in xstddef of VS2012
  41 #define _COMMA ,
  42
  43 #define MAKER(_arg1, _comma, _arg2)                                            \
  44   void func(_arg1 _comma _arg2) {}
  45 #define MAKE_FUNC(_makerP1, _makerP2, _arg1, _comma, _arg2)                    \
  46   _makerP1##_makerP2(_arg1, _comma, _arg2)
  47
  48 MAKE_FUNC(MAK, ER, int a, _COMMA, int b);
  49 // CHECK: void func(int a , int b) {}
  50
  51 #define macro(a, b) (a - b)
  52 void function(int a);
  53 #define COMMA_ELIDER(...) \
  54   macro(x, __VA_ARGS__); \
  55   function(x, __VA_ARGS__);
  56 COMMA_ELIDER();
  57 // CHECK: (x - );
  58 // CHECK: function(x);