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From: hjl@nynexst.com (H.J. Lu)
To: raeburn@cygnus.com (Ken Raeburn)
Cc: roland@gnu.ai.mit.edu, gas2@cygnus.com
Subject: Re: bfd assertion failed with gcc 950607
Date: Wed, 14 Jun 1995 15:17:00 -0000	[thread overview]
Message-ID: <9506142209.AA21867@titanic.nynexst.com> (raw)
In-Reply-To: <9506142137.AA32237@cujo.cygnus.com>

> 
> 
>    Date: Wed, 14 Jun 1995 12:51:39 -0400
>    From: Roland McGrath <roland@gnu.ai.mit.edu>
> 
>    > No. Solaris uses `_fooo' in foo.c. The GNU ld does the samething.
>    > It just complains about it.
> 
>    That is contrary to the specification of the SVR4 ABI, page 4-27:
>    "Similarly, if a common symbol exists (i.e., a symbol whose st_shndx field
>    holds SHN_COMMON), the appearance of a weak symbol with the same name will
>    not cause an error.  The link editor honors the common definition and
>    ignores the weak ones."
> 
> The paragraph you quote starts with "When the link editor combines
> several relocatable object files...."  So a shared library should be
> treated like a random .o file, instead of like an archive library?
> That seems counterintuitive.  Is a shared library really considered a
> "relocatable object file"?
> 
> The ABI description doesn't seem all that clear to me, actually.  At
> the start of chapter 4, it's described as a third type of object file,
> distinct from relocatable files and executable files.
> 

The current GNU ELF ld does what was quoted by Roland from SVR4 ABI.
It honors the common symbol instead of the weak one in shared
libraries. BFD_ASSEET just complains something which ld can handle
but not expected by BFD_ASSEET.

-- 
H.J. Lu
NYNEX Science and Technology, Inc.			hjl@nynexst.com


      reply	other threads:[~1995-06-14 15:17 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <18151.9506140906@afs.mcc.ac.uk>
1995-06-14  7:05 ` H.J. Lu
1995-06-14  9:08   ` Roland McGrath
1995-06-14  9:43     ` H.J. Lu
1995-06-14  9:51       ` Roland McGrath
1995-06-14 14:26         ` H.J. Lu
1995-06-14 14:37         ` Ken Raeburn
1995-06-14 15:17           ` H.J. Lu [this message]

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