[Bug fortran/51809] [4.7 Regression][OOP] ICE (segfault) depending on USE statements order

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51809

--- Comment #4 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-01-16 19:50:16 UTC ---
Author: burnus
Date: Mon Jan 16 19:50:11 2012
New Revision: 183219

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183219
Log:
2012-01-16  Tobias Burnus  <burnus@net-b.de>

        PR fortran/51809
        * class.c (gfc_find_derived_vtab): Mark __vtab and
        __def_init as FL_VARIABLE not as FL_PARAMETER.
        * expr.c (gfc_simplify_expr): Remove special
        handling of __vtab.
        * resolve.c (resolve_values): Ditto.
        * trans-decl.c (gfc_get_symbol_decl): Mark __vtab
        and __def_init as TREE_READONLY.

2012-01-16  Tobias Burnus  <burnus@net-b.de>

        PR fortran/51809
        * gfortran.dg/use_20.f90: New


Added:
    trunk/gcc/testsuite/gfortran.dg/use_20.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/class.c
    trunk/gcc/fortran/expr.c
    trunk/gcc/fortran/resolve.c
    trunk/gcc/fortran/trans-decl.c
    trunk/gcc/testsuite/ChangeLog