clang/test/PCH/pragma-pointers_to_members.cpp

   1 // Test this without pch.
   2 // RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-pc-win32 -fms-extensions -fsyntax-only -include %s -verify -std=c++11
   3
   4 // Test with pch.
   5 // RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-pc-win32  -fms-extensions -emit-pch -o %t -std=c++11
   6 // RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-pc-win32  -fms-extensions -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
  19 struct S0;
  20 static_assert(sizeof(int S0::*) == 12, "");
  21
  22 struct S1;
  23 struct S2;
  24
  25 #pragma pointers_to_members(full_generality, single_inheritance)
  26
  27 static_assert(sizeof(int S1::*) == 4, "");
  28
  29 #else
  30
  31 static_assert(sizeof(int S2::*) == 4, "");
  32 static_assert(sizeof(int S0::*) == 12, "");
  33
  34 #endif