[Bug fortran/52196] Add -Wrealloc-lhs

["burnus at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52196

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-04-25 06:26:01 UTC ---
Author: burnus
Date: Wed Apr 25 06:25:48 2012
New Revision: 186806

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186806
Log:
2012-04-25  Tobias Burnus  <burnus@net-b.de>

        PR fortran/52196
        * lang.opt (Wrealloc-lhs, Wrealloc-lhs-all): New flags.
        * gfortran.h (gfc_option_t): Add them.
        * options.c (gfc_init_options, gfc_post_options,
        gfc_handle_option): Handle them.
        * invoke.texi: Document them.
        * trans-expr.c (realloc_lhs_warning): New function.
        (gfc_trans_arrayfunc_assign,
        alloc_scalar_allocatable_for_assignment,
        gfc_trans_assignment_1): Use it.

2012-04-25  Tobias Burnus  <burnus@net-b.de>

        PR fortran/52196
        * gfortran.dg/realloc_on_assign_14.f90: New.


Added:
    trunk/gcc/testsuite/gfortran.dg/realloc_on_assign_14.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/gfortran.h
    trunk/gcc/fortran/invoke.texi
    trunk/gcc/fortran/lang.opt
    trunk/gcc/fortran/options.c
    trunk/gcc/fortran/trans-expr.c
    trunk/gcc/testsuite/ChangeLog