[Bug c++/82872] [6/7/8 Regression] ICE in ignore_overflows on __PTRDIFF_MAX__ index

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82872

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Dec 21 16:22:04 2017
New Revision: 255944

URL: https://gcc.gnu.org/viewcvs?rev=255944&root=gcc&view=rev
Log:
        PR c++/82872
        * convert.c (convert_to_integer_1) <POINTER_TYPE>: Do not return the
        shared zero if the input has overflowed.

Added:
    trunk/gcc/testsuite/c-c++-common/pr82872.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/convert.c
    trunk/gcc/testsuite/ChangeLog