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From: Zack Weinberg <zackw@panix.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: Andreas Schwab <schwab@suse.de>,
	GNU C Library <libc-alpha@sourceware.org>,
	 Siddhesh Poyarekar <siddhesh@gotplt.org>
Subject: Re: Evolution of ELF symbol management
Date: Tue, 22 Nov 2016 15:48:00 -0000	[thread overview]
Message-ID: <CAKCAbMg0iTwH0NQydmdy9e7wWyprQEb0DjPvGh2pjcirzCSmaw@mail.gmail.com> (raw)
In-Reply-To: <543ff4e2-48da-43d4-7688-6973baeaec9f@redhat.com>

On Tue, Nov 22, 2016 at 10:39 AM, Florian Weimer <fweimer@redhat.com> wrote:
> On 11/22/2016 04:29 PM, Andreas Schwab wrote:
>>
>> On Nov 22 2016, Florian Weimer <fweimer@redhat.com> wrote:
>>
>>> There also configure scripts which do
>>>
>>> extern char whatever();
>>> main () { whatever(); }
>>>
>>> for link testing, without including the appropriate header (perhaps
>>> deliberately).  That could be considered broken.  I'm not sure.
>>
>> While getting the return type wrong makes it slightly broken, the C
>> standard does support declaring standard functions on your own, as long
>> as you don't need special types.
>
> Yes, that's true.  Thanks for the reminder.

As a practical matter, also, Autoconf has done this for decades and no
one has even sketched a design for a replacement; I think we must
assume we will need to support it for the foreseeable future.

zw

  reply	other threads:[~2016-11-22 15:48 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-18  9:26 Florian Weimer
2016-10-18 16:50 ` Joseph Myers
2016-10-25 14:32   ` Florian Weimer
2016-10-25 15:37     ` Joseph Myers
2016-11-21 15:35       ` Florian Weimer
2016-10-26 12:17     ` Joseph Myers
2016-11-20 11:13     ` Mike Frysinger
2016-11-21 10:12       ` Florian Weimer
2016-11-16 15:55 ` Zack Weinberg
2016-11-18 15:48   ` Florian Weimer
2016-11-19 17:25     ` Zack Weinberg
2016-11-22 15:09       ` Florian Weimer
2016-11-22 15:30         ` Andreas Schwab
2016-11-22 15:39           ` Florian Weimer
2016-11-22 15:48             ` Zack Weinberg [this message]
2016-11-22 15:48               ` Zack Weinberg
2016-11-22 17:42         ` Joseph Myers
2016-11-23 14:09         ` Zack Weinberg
2016-11-24 10:01           ` Florian Weimer

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