pragma-operators.cpp revision f5ae4dd6bf2310fbf4b192137aecd21248a08449 
1// RUN: %clang_cc1 -fms-extensions -std=c++11 -E %s | FileCheck %s
2
3// Test that we properly expand the C99 _Pragma and Microsoft __pragma
4// into #pragma directives, with newlines where needed. <rdar://problem/8412013>
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)
18B(foo)
19#pragma warning(pop)
20
21#define pragma_L _Pragma(L"GCC diagnostic push")
22#define pragma_u8 _Pragma(u8"system_header")
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 system_header
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;
37int n = pragma_L pragma_u8 pragma_u pragma_U pragma_R pragma_UR pragma_hello 0;
38