Unbreak traits tests by handling differences between version macros in clang/apple-clang.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@276200 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp

@@ -157,7 +157,8 @@ int main()
 // TODO: Remove this workaround once Clang <= 3.7 are no longer used regularly.
 // In those compiler versions the __is_constructible builtin gives the wrong
 // results for abominable function types.
-#if defined(__clang__) && __clang_major__ == 3 && __clang_minor__ < 8
+#if (defined(TEST_APPLE_CLANG_VER) && TEST_APPLE_CLANG_VER < 703) \
+ || (defined(TEST_CLANG_VER) && TEST_CLANG_VER < 308)
 #define WORKAROUND_CLANG_BUG
 #endif
 #if !defined(WORKAROUND_CLANG_BUG)

test/std/utilities/meta/meta.unary/meta.unary.prop/is_default_constructible.pass.cpp

@@ -111,7 +111,8 @@ int main()
 // TODO: Remove this workaround once Clang <= 3.7 are no longer used regularly.
 // In those compiler versions the __is_constructible builtin gives the wrong
 // results for abominable function types.
-#if defined(__clang__) && __clang_major__ == 3 && __clang_minor__ < 8
+#if (defined(TEST_APPLE_CLANG_VER) && TEST_APPLE_CLANG_VER < 703) \
+ || (defined(TEST_CLANG_VER) && TEST_CLANG_VER < 308)
 #define WORKAROUND_CLANG_BUG
 #endif
 #if !defined(WORKAROUND_CLANG_BUG)

test/support/test_macros.h

@@ -34,6 +34,14 @@
 #define TEST_HAS_BUILTIN(X) 0
 #endif
 
+#if defined(__apple_build_version__)
+#define TEST_APPLE_CLANG_VER (__clang_major__ * 100) + __clang_minor__
+#elif defined(__clang_major__)
+#define TEST_CLANG_VER (__clang_major__ * 100) + __clang_minor__
+#elif defined(__GNUC__)
+#define TEST_GCC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
+#endif
+
 /* Make a nice name for the standard version */
 #ifndef TEST_STD_VER
 #if  __cplusplus <= 199711L