[Patch, Fortran] PR 69495: unused-label warning does not tell which flag triggered it

[Janus Weil <janus at gcc dot gnu dot org>]

Hi all,

here is a diagnostics patch, which makes sure that the responsible
flag is printed in several warning messages (for which this was still
missing).

The  only case that I'm not completely sure about is the hunk in
intrinsic.c. In particular I was not able to trigger this warning and
found no occurrence of it in the testsuite. Could someone check if the
flag that I'm using there is correct, please?

As a small extra the patch also mentions the -Wpedantic flag in the
gfortran documentation.

It regtests cleanly on x86_64-linux-gnu. Ok for trunk?

Cheers,
Janus


2016-02-01  Janus Weil  <janus@gcc.gnu.org>

    PR fortran/69495
    * invoke.texi: Mention -Wpedantic as an alias of -pedantic.
    * check.c (gfc_check_transfer): Mention responsible flag in warning
    message.
    * frontend-passes.c (do_warn_function_elimination): Ditto.
    * intrinsic.c (gfc_check_intrinsic_standard): Ditto.
    * resolve.c (resolve_elemental_actual): Ditto.
    (resolve_operator): Ditto.
    (warn_unused_fortran_label): Ditto.
    * trans-common.c (translate_common): Ditto.


2016-02-01  Janus Weil  <janus@gcc.gnu.org>

    PR fortran/69495
    * gfortran.dg/elemental_optional_args_6.f90: Use -Wpedantic flag.

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