clang/test/PCH/pragma-ms_struct.cpp

   1 // Test this without pch.
   2 // RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-apple-darwin9 -fsyntax-only -include %s -verify -std=c++11
   3
   4 // Test with pch.
   5 // RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-apple-darwin9 -emit-pch -o %t -std=c++11
   6 // RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-apple-darwin9 -fsyntax-only -include-pch %t -verify -std=c++11
   7
   8 // The first run line creates a pch, and since at that point HEADER is not
   9 // defined, the only thing contained in the pch is the pragma. The second line
  10 // then includes that pch, so HEADER is defined and the actual code is compiled.
  11 // The check then makes sure that the pragma is in effect in the file that
  12 // includes the pch.
  13
  14 // expected-no-diagnostics
  15
  16 #ifndef HEADER
  17 #define HEADER
  18 struct SOffH {
  19   short m : 9;
  20   int q : 12;
  21 };
  22
  23 #pragma ms_struct on
  24
  25 struct SOnH {
  26   short m : 9;
  27   int q : 12;
  28 };
  29
  30 #else
  31
  32 struct SOnC {
  33   short m : 9;
  34   int q : 12;
  35 };
  36
  37 static_assert(sizeof(SOffH) == 4, "");
  38 static_assert(sizeof(SOnH) == 8, "");
  39 static_assert(sizeof(SOnC) == 8, "");
  40
  41 #endif