From: Jan Beulich <jbeulich@suse.com>
To: Nick Clifton <nickc@redhat.com>
Cc: serge.guelton@telecom-bretagne.eu, binutils@sourceware.org
Subject: Re: RFC: Document unexpected behaviour of --fatal-warnings
Date: Tue, 23 Jan 2024 13:38:39 +0100 [thread overview]
Message-ID: <e6c7dabf-acb9-4056-820e-8b150348bd52@suse.com> (raw)
In-Reply-To: <87fryomdy6.fsf@redhat.com>
On 23.01.2024 13:28, Nick Clifton wrote:
> Hi Guys,
>
> It was recently pointed out to me that the bfd linker's
> --fatal-warnings option can behave in an unexpected manner. For
> example:
>
> $ ld.bfd -z bad-option --fatal-warnings -e 0/dev/null
> ld.bfd: warning: -z bad-option ignored
> $ echo $?
> 0
>
> ie the warning about the ignored option is not being treated as an
> error. This happens because the --fatal-warnings option only takes
> affect after it has been processed, and we process the options in a
> linear order. So the following works:
>
> $ ld.bfd --fatal-warnings -z bad-option -e 0 /dev/null
> ld.bfd: warning: -z bad-option ignored
> $ echo $?
> 1
>
> This behaviour differs from gold and lld, both of which honour
> --fatal-warnings no matter where it occurs on the command line.
>
> So we could fix the linker, create a two pass argument scan and the
> problem would be solved. But a) I am lazy and b) we already have a
> precedent for options on the command line only affecting options that
> come after it. (I am thinking of the -L option here, although there
> are probably several others). So instead I am considering documenting
> the current behaviour as expected. (See the patch below).
>
> What do people think ?
I'd be fine either way, and I agree documenting is cheaper and sufficient.
Jan
next prev parent reply other threads:[~2024-01-23 12:38 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-23 12:28 Nick Clifton
2024-01-23 12:38 ` Jan Beulich [this message]
2024-01-23 12:50 ` H.J. Lu
2024-01-23 13:15 ` H.J. Lu
2024-01-24 15:07 ` Serge Guelton
2024-01-24 15:13 ` Sam James
2024-01-24 16:06 ` H.J. Lu
2024-01-24 22:52 ` H.J. Lu
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