The bind and function functor constructors and assignment operators were overly general and getting confused with the copy constructor and copy assignment operators.  Constrained them.  This fixes http://llvm.org/bugs/show_bug.cgi?id=16385

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185297 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed