Prefer to use the __is_XXX compiler intrinsics to the (old, busted) __has_XXX intrinsics when implementing type traits. Thanks to Richard Smith for the patch.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@344254 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed