copy_n should result in a one past the end input iterator

[Jonathan Wakely]

On 21/11/16 03:10 +0000, Robert Young wrote:
>/*
>gcc -Wall -Wextra -std=c++11 copy_n_vs_copy.cpp -lstdc++ -o copy_n_vs_copy
>
>One Past the End
>https://gcc.gnu.org/onlinedocs/libstdc++/manual/iterators.html#iterators.predefined.end
>
>BUG location:
>/usr/lib/gcc/x86_64-pc-linux-gnu/5.1.0/include/g++-v5/bits/stl_algo.h
>
>*/

Hi,

This mailing list is for automated email from our Bugzilla database,
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Please report bugs to Bugzilla as described at
https://gcc.gnu.org/bugs/

However, this is not a bug because it is unclear what the right
behaviour is for this algorithm, see
http://cplusplus.github.io/LWG/lwg-active.html#2471

We are not going to change libstdc++ until the C++ standards committee
decides what the right behaviour is.