[Bug fortran/44265] Link error with reference to parameter array in specification expression

[pault at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44265

--- Comment #18 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Fri Dec  9 11:55:27 2016
New Revision: 243478

URL: https://gcc.gnu.org/viewcvs?rev=243478&root=gcc&view=rev
Log:
2016-12-09  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/44265
        * gfortran.h : Add fn_result_spec bitfield to gfc_symbol.
        * resolve.c (flag_fn_result_spec): New function.
        (resolve_fntype): Call it for character result lengths.
        * symbol.c (gfc_new_symbol): Set fn_result_spec to zero.
        * trans-decl.c (gfc_sym_mangled_identifier): Include the
        procedure name in the mangled name for symbols with the
        fn_result_spec bit set.
        (gfc_finish_var_decl): Mark the decls of these symbols
        appropriately for the case where the function is external.
        (gfc_get_symbol_decl): Mangle the name of these symbols.
        (gfc_create_module_variable): Allow them through the assert.
        (gfc_generate_function_code): Remove the assert before the
        initialization of sym->tlink because the frontend no longer
        uses this field.
        * trans-expr.c (gfc_map_intrinsic_function): Add a case to
        treat the LEN_TRIM intrinsic.
        (gfc_trans_string_copy): Deal with Wstringop-overflow warning
        that can occur with constant source lengths at -O3.

2016-12-09  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/44265
        * gfortran.dg/char_result_14.f90: New test.
        * gfortran.dg/char_result_15.f90: New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/char_result_14.f90
    trunk/gcc/testsuite/gfortran.dg/char_result_15.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/gfortran.h
    trunk/gcc/fortran/resolve.c
    trunk/gcc/fortran/symbol.c
    trunk/gcc/fortran/trans-decl.c
    trunk/gcc/fortran/trans-expr.c
    trunk/gcc/testsuite/ChangeLog