[Bug fortran/51338] [4.6/4.7 Regression] seg fault in gfc_dep_compare_expr with -O2

[tkoenig at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51338

--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2011-12-05 
20:11:53 UTC ---
Author: tkoenig
Date: Mon Dec  5 20:11:44 2011
New Revision: 182024

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182024
Log:
2011-12-05  Thomas Koenig  <tkoe...@gcc.gnu.org>

    PR fortran/51338
    * dependency.c (are_identical_variables):  Handle case where
    end fields of substring references are NULL.

2011-12-05  Thomas Koenig  <tkoe...@gcc.gnu.org>

    PR fortran/51338
    * gfortran.dg/assumed_charlen_substring_1.f90:  New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/assumed_charlen_substring_1.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/dependency.c
    trunk/gcc/testsuite/ChangeLog