clang/test/Lexer/pragma-operators.cpp

   1 // RUN: %clang_cc1 -fms-extensions -std=c++11 -E %s -fuse-line-directives | FileCheck %s
   2
   3 // Test that we properly expand the C99 _Pragma and Microsoft __pragma
   4 // into #pragma directives, with newlines where needed.
   5
   6 // CHECK: #line
   7 // CHECK: #pragma warning(push)
   8 // CHECK: extern "C" {
   9 // CHECK: #line
  10 // CHECK: #pragma warning(push)
  11 // CHECK:  int foo() { return 0; } }
  12 // CHECK: #pragma warning(pop)
  13 #define A(X) extern "C" { __pragma(warning(push)) \
  14   int X() { return 0; } \
  15 }
  16 #define B(X) A(X)
  17 #pragma warning(push)
  18 B(foo)
  19 #pragma warning(pop)
  20
  21 #define pragma_L _Pragma(L"GCC diagnostic push")
  22 #define pragma_u8 _Pragma(u8"pack(1)")
  23 #define pragma_u _Pragma(u"GCC diagnostic pop")
  24 #define pragma_U _Pragma(U"comment(lib, \"libfoo\")")
  25 #define pragma_R _Pragma(R"(clang diagnostic ignored "-Wunused")")
  26 #define pragma_UR _Pragma(UR"(clang diagnostic error "-Wunused")")
  27 #define pragma_hello _Pragma(u8R"x(message R"y("Hello", world!)y")x")
  28 // CHECK: int n =
  29 // CHECK: #pragma GCC diagnostic push
  30 // CHECK: #pragma pack(1)
  31 // CHECK: #pragma GCC diagnostic pop
  32 // CHECK: #pragma comment(lib, "libfoo")
  33 // CHECK: #pragma clang diagnostic ignored "-Wunused"
  34 // CHECK: #pragma clang diagnostic error "-Wunused"
  35 // CHECK: #pragma message("\042Hello\042, world!")
  36 // CHECK: 0;
  37 int n = pragma_L pragma_u8 pragma_u pragma_U pragma_R pragma_UR pragma_hello 0;
  38
  39 #pragma warning(disable : 1 2L 3U ; error : 4 5 6 ; suppress : 7 8 9)
  40 // CHECK: #pragma warning(disable: 1 2 3)
  41 // CHECK: #line [[@LINE-2]]
  42 // CHECK: #pragma warning(error: 4 5 6)
  43 // CHECK: #line [[@LINE-4]]
  44 // CHECK: #pragma warning(suppress: 7 8 9)
  45
  46 #pragma warning(push)
  47 #pragma warning(push, 1L)
  48 #pragma warning(push, 4U)
  49 #pragma warning(push, 0x1)
  50 #pragma warning(push, 03)
  51 #pragma warning(push, 0b10)
  52 #pragma warning(push, 1i8)
  53 // CHECK: #pragma warning(push)
  54 // CHECK: #pragma warning(push, 1)
  55 // CHECK: #pragma warning(push, 4)
  56 // CHECK: #pragma warning(push, 1)
  57 // CHECK: #pragma warning(push, 3)
  58 // CHECK: #pragma warning(push, 2)
  59 // CHECK: #pragma warning(push, 1)