[Bug c++/78244] Narrowing conversion is accepted in a function template, but it should be rejected

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78244

--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Jan 16 15:58:34 2019
New Revision: 267976

URL: https://gcc.gnu.org/viewcvs?rev=267976&root=gcc&view=rev
Log:
        PR c++/78244 - narrowing conversion in template not detected.
        * call.c (perform_implicit_conversion_flags): Set
        IMPLICIT_CONV_EXPR_BRACED_INIT.
        * cp-tree.h (IMPLICIT_CONV_EXPR_BRACED_INIT): New.
        * pt.c (tsubst_copy_and_build): Use it.

        * g++.dg/cpp0x/Wnarrowing13.C: New test.
        * g++.dg/cpp0x/Wnarrowing14.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/Wnarrowing13.C
    trunk/gcc/testsuite/g++.dg/cpp0x/Wnarrowing14.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog