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Re: [Patch, Fortran] PR 54997: -Wunused-function gives false warnings for procedures passed as actual argument
ping!
2012/10/22 Janus Weil <janus@gcc.gnu.org>:
> Minor update to the patch: It now also sets TREE_USED for entry
> masters in order to avoid bogus warnings for procedures with ENTRY
> (cf. comment 6 in the PR, which like comment 0 is a 4.8 regression).
>
> Still regtests cleanly. Ok?
>
> Cheers,
> Janus
>
>
>
> 2012/10/21 Janus Weil <janus@gcc.gnu.org>:
>> Hi all,
>>
>> here is another patch to silence some more of the bogus warnings about
>> unused functions that gfortran is currently throwing (cf. also the
>> previous patch for PR 54224).
>>
>> It fixes the usage of the 'referenced' attribute, which should only be
>> given to procedures which are actually 'used' (called/referenced).
>> Then TREE_USED is set according to this attribute, which in turn
>> silences the warning in the middle-end.
>>
>> The patch was regtested on x86_64-unknown-linux-gnu. Ok for trunk?
>>
>> Cheers,
>> Janus
>>
>>
>> 2012-10-21 Janus Weil <janus@gcc.gnu.org>
>>
>> PR fortran/54997
>> * decl.c (match_procedure_decl): Don't set 'referenced' attribute
>> for PROCEDURE declarations.
>> * parse.c (gfc_fixup_sibling_symbols,parse_contained): Don't set
>> 'referenced' attribute for all contained procedures.
>> * trans-decl.c (gfc_get_symbol_decl): Allow for unreferenced procedures.
>> (build_function_decl): Set TREE_USED for referenced procedures.
>>
>> 2012-10-21 Janus Weil <janus@gcc.gnu.org>
>>
>> PR fortran/54997
>> * gfortran.dg/warn_unused_function_2.f90: New.