[PATCH 0/2] addr2line: new option -n to add a newline at the end

[Maurizio Papini]

Thanks for your feedback Jan.

Yes, I understand that one option for a single newline smells fulsome but
the
idea is to use it to mark the end of output when addr2line is used as a
"server"
process: right now I see only the "-i" use case, but there could be others
in the
future for new options.  Said that I would propose adding the "add-newline"
long
option only to trivially add a new line, that could be reused for other
output.
What do you think?

Maurizio

On Mon, Jan 9, 2023 at 5:17 PM Jan Beulich <jbeulich@suse.com> wrote:

> On 09.01.2023 17:04, Maurizio Papini via Binutils wrote:
> > Do you think this should go through an RFC? Do you have any thoughts?
>
> Well, I'm of two minds here, which so far kept me from responding: On one
> hand an option that's useful to someone is probably a good thing. Otoh an
> option to control a single newline character seems a little too fine
> grained to me. Plus I'm a little concerned of burning a short option for
> this (niche?) issue. Since you say it's specifically an issue with -i,
> would it be an option to add a long-only option providing the intended
> variant of behavior, i.e. combining what would (aiui) be "-i -n" with the
> current proposal?
>
> Jan
>
> > On Mon, Dec 19, 2022 at 2:53 PM Maurizio Papini <mpapini@redhat.com>
> wrote:
> >
> >> This series adds a new option to addr2line (-n) to append a newline
> >> after the last informative one.
> >>
> >> This new option is helpful for using a running addr2line process and
> >> performing queries, in particular when the option -i is requested: the
> >> additional empty line can be used to mark the end of the inlined
> functions
> >> lists so that an application can get the output without defining a
> timeout.
> >>
> >> The first patch adds the new option while the second one adds the
> relative
> >> test.
> >>
> >> Let me know what you think.
> >>
> >> Maurizio
> >>
> >>
> >> Maurizio Papini (2):
> >>   addr2line: new option -n to add a newline at the end
> >>   addr2line: test to check -n option
> >>
> >>  binutils/addr2line.c                          | 11 +++++++++--
> >>  binutils/doc/binutils.texi                    |  5 +++++
> >>  binutils/testsuite/binutils-all/addr2line.exp | 10 ++++++++++
> >>  3 files changed, 24 insertions(+), 2 deletions(-)
> >>
> >> --
> >> 2.38.1
> >>
> >>
>
>