de589f2f8f
iterator, allocator) constructor with the intention of it being implicitly converted to the allocator type, it is possible for overload resolution to favour the (iterator, iterator, enable_if) constructor. Eliminate this possibility by moving the enable_if to one of the existing arguments and removing the third argument. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@191145 91177308-0d34-0410-b5e6-96231b3b80d8