[Bug tree-optimization/81297] [8 Regression] ICE in get_single_symbol

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81297

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Aug  1 07:04:10 2017
New Revision: 250758

URL: https://gcc.gnu.org/viewcvs?rev=250758&root=gcc&view=rev
Log:
2017-08-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/81297
        * tree-vrp.c (get_single_symbol): Remove assert, instead drop
        TREE_OVERFLOW from INTEGER_CSTs.

        * gcc.dg/torture/pr81297.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr81297.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c