2010-02-20  Tobias Burnus  <burnus@net-b.de>

        PR fortran/42958
        * libgfortran.h: Add GFC_RTCHECK_MEM.
        * invoke.texi (-fcheck=): Document -fcheck=mem.
        * tranc.c (gfc_call_malloc): Remove negative-size run-time error
        and enable malloc-success check only with -fcheck=mem.
        * option.c (gfc_handle_runtime_check_option): Add -fcheck=mem.

From-SVN: r156923