[Bug libstdc++/77994] std::sample uses incorrect integer types internally

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77994

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Oct 17 16:50:37 2016
New Revision: 241249

URL: https://gcc.gnu.org/viewcvs?rev=241249&root=gcc&view=rev
Log:
Backport fixes to std::experimental::sample

        PR libstdc++/77994
        * include/experimental/algorithm (experimental::sample): Convert size
        argument to iterator difference type. Fix invalid use of input
        iterator. Defend against overloaded comma operator.

Modified:
    branches/gcc-6-branch/libstdc++-v3/ChangeLog
    branches/gcc-6-branch/libstdc++-v3/include/experimental/algorithm
   
branches/gcc-6-branch/libstdc++-v3/testsuite/experimental/algorithm/sample.cc