Fix copy_n to increment only n-1 times for an input iterator.  This works much better with std::istream_iterator<int>(std::cin).  Credit: Matan Nassau.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@126581 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed