[Bug c++/86982] Make -Wreturn-local-addr know about std::move and std::forward

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86982

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Sep  6 00:38:13 2018
New Revision: 264139

URL: https://gcc.gnu.org/viewcvs?rev=264139&root=gcc&view=rev
Log:
        PR c++/86982, -Wreturn-local-addr and std::move and std::forward.
        * typeck.c (maybe_warn_about_returning_address_of_local): Handle calls
        to std::move or std::forward.
        (is_std_forward_p): New function.

        * g++.dg/warn/Wreturn-local-addr-5.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Wreturn-local-addr-5.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/typeck.c
    trunk/gcc/testsuite/ChangeLog