[Bug fortran/83650] [6/7/8 Regression] Wrong simplification in cshift with negative shifts

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83650

--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Jan  2 23:03:11 2018
New Revision: 256113

URL: https://gcc.gnu.org/viewcvs?rev=256113&root=gcc&view=rev
Log:
2018-01-02  Thomas Koenig  <tkoenig@gcc.gnu.org>

        Backport from 7-branch
        PR fortran/83650
        * simplify.c (gfc_simplify_cshift): Correct contition for
        negative shifts.

2018-01-02  Thomas Koenig  <tkoenig@gcc.gnu.org>

        Backport from 7-branch
        PR fortran/83650
        * gfortran.dg/simplify_cshift_1.f90: Correct condition.


Modified:
    branches/gcc-6-branch/gcc/fortran/ChangeLog
    branches/gcc-6-branch/gcc/fortran/simplify.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/testsuite/gfortran.dg/simplify_cshift_1.f90