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Re: AIX 5.1 dlopen shared library exception handling problem

From: David Edelsohn <dje at watson dot ibm dot com>
To: Joe Buck <Joe dot Buck at synopsys dot com>
Cc: "Coulter, Scott" <scott dot coulter at retek dot com>, gcc at gcc dot gnu dot org
Date: Thu, 05 Feb 2004 12:25:12 -0500
Subject: Re: AIX 5.1 dlopen shared library exception handling problem
References: <C736868EB761C04A8909BB038DEABD64095864DB@MSPMAILV1.retek.int> <scott.coulter@retek.com> <200402051516.i15FGJT26106@makai.watson.ibm.com> <20040205092205.A19989@synopsys.com>

>>>>> Joe Buck writes:

>> Please see existing Bugzilla bug report 13391.

Joe> It doesn't look the same.  You say in that bug report that the issue is
Joe> that collect2 becomes confused by duplicate symbols.  But in this case,
Joe> dlopen() is being used to open the shared library, and collect2 is not
Joe> involved.

	Collect2 generated the shared library.

	According to an analysis in a related bug report, it appears that
GCC's assumption about the sorting of FDEs is getting confused by the
address ranges of shared libraries used by AIX.  The duplicate symbols
cause FDEs for the same symbol to appear in multiple shared libraries.

David

Follow-Ups:
- Re: AIX 5.1 dlopen shared library exception handling problem
  - From: Joe Buck

References:
- AIX 5.1 dlopen shared library exception handling problem
  - From: Coulter, Scott
- Re: AIX 5.1 dlopen shared library exception handling problem
  - From: David Edelsohn
- Re: AIX 5.1 dlopen shared library exception handling problem
  - From: Joe Buck

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