[Bug c++/83713] [6/7 Regression] ICE in do_narrow at gcc/convert.c:474

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83713

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jan  9 08:53:14 2018
New Revision: 256371

URL: https://gcc.gnu.org/viewcvs?rev=256371&root=gcc&view=rev
Log:
2018-01-09  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-01-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/83713
        * convert.c (do_narrow): Properly guard TYPE_OVERFLOW_WRAPS checks.

        * g++.dg/torture/pr83713.C: New testcase.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/torture/pr83713.C
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/convert.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog