[Bug tree-optimization/71707] [7 Regression] ICE in get_stridx_plus_constant

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71707

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jun 30 18:45:18 2016
New Revision: 237889

URL: https://gcc.gnu.org/viewcvs?rev=237889&root=gcc&view=rev
Log:
        PR tree-optimization/71707
        * tree-ssa-strlen.c (get_stridx_plus_constant): Handle already present
        strinfo even for ADDR_EXPR ptr.

        * gcc.dg/strlenopt-29.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/strlenopt-29.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-strlen.c