[Bug fortran/89185] [9 Regression] runtime error: member access within null pointer of type 'struct gfc_ref' since r268092

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89185

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb  4 13:28:34 2019
New Revision: 268521

URL: https://gcc.gnu.org/viewcvs?rev=268521&root=gcc&view=rev
Log:
Do not dereference NULL pointer in resolve_ref (PR fortran/89185).

2019-02-04  Martin Liska  <mliska@suse.cz>

        PR fortran/89185
        * resolve.c (resolve_ref): Remove breakout variable as
        we need to prevent prev = &(*prev)->next to happen
        with *prev == NULL.

Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/resolve.c