ACE/tests/Compiler_Features_32_Test.cpp

   1 /**
   2  * This program checks if the compiler doesn't have a certain bug
   3  * that we encountered when testing C++11 features.
   4  *
   5  * This test validates whether a alias can be used to explicitly
   6  * call a destructor, which is related to DR244 (see
   7  * http://wg21.cmeerw.net/cwg/issue244)
   8  *
   9  * This is partly fixed May 2014 in clang, see
  10  * http://llvm.org/viewvc/llvm-project?view=revision&revision=209319
  11  *
  12  * Currently the using is required, see
  13  * https://bugs.llvm.org/show_bug.cgi?id=12350
  14  */
  15
  16 #include "test_config.h"
  17
  18 #include <string>
  19
  20 class A
  21 {
  22 public:
  23   A () = default;
  24   void clear ();
  25 private:
  26   union u_type_
  27   {
  28     u_type_ ();
  29     ~u_type_ ();
  30     std::string string_member_;
  31     bool bool_member_;
  32   } u_;
  33 };
  34
  35 A::u_type_::u_type_ ()
  36 {
  37 }
  38
  39 A::u_type_::~u_type_ ()
  40 {
  41 }
  42
  43 void A::clear ()
  44 {
  45 #if defined __clang__ && \
  46     (defined __apple_build_version__ && __apple_build_version__ <= 12000322 \
  47      || __clang_major__ <= 10)
  48 #define CLANG_WORKAROUND
  49 #endif
  50
  51 #ifdef CLANG_WORKAROUND
  52   // clang requires one of two workarounds:
  53   // 1. the name after ~ must be in scope
  54   using std::string;
  55 #endif
  56   this->u_.string_member_.std::string::~string ();
  57 }
  58
  59 struct B {
  60   struct u_type_ {
  61     std::string m;
  62   } u_;
  63   void clear() {
  64 #ifdef CLANG_WORKAROUND
  65     // 2. actual class name instead of typedef
  66     u_.m.std::string::~basic_string ();
  67 #else
  68     u_.m.std::string::~string ();
  69 #endif
  70   }
  71 };
  72
  73 int
  74 run_main (int, ACE_TCHAR *[])
  75 {
  76   ACE_START_TEST (ACE_TEXT("Compiler_Features_32_Test"));
  77
  78   A a_v;
  79
  80   ACE_DEBUG ((LM_INFO,
  81               ACE_TEXT ("C++11 support ok\n")));
  82
  83   ACE_END_TEST;
  84
  85   return 0;
  86 }