[Bug c++/86190] [6/7/8/9 Regression] -Wsign-conversion ignores explicit conversion in some cases

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86190

--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Jul 18 13:13:11 2018
New Revision: 262855

URL: https://gcc.gnu.org/viewcvs?rev=262855&root=gcc&view=rev
Log:
        PR c++/86190 - bogus -Wsign-conversion warning
        * typeck.c (cp_build_binary_op): Fix formatting.  Add a warning
        sentinel.

        * g++.dg/warn/Wsign-conversion-3.C: New test.
        * g++.dg/warn/Wsign-conversion-4.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Wsign-conversion-3.C
    trunk/gcc/testsuite/g++.dg/warn/Wsign-conversion-4.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/typeck.c
    trunk/gcc/testsuite/ChangeLog