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Re: the cause of PR41260 is new additional epilog unwind information
- From: Richard Guenther <rguenther at suse dot de>
- To: Jack Howarth <howarth at bromo dot med dot uc dot edu>
- Cc: rth at gcc dot gnu dot org, gcc at gcc dot gnu dot org
- Date: Sat, 19 Sep 2009 19:38:15 +0200 (CEST)
- Subject: Re: the cause of PR41260 is new additional epilog unwind information
- References: <20090918225532.GA12673@bromo.med.uc.edu>
On Fri, 18 Sep 2009, Jack Howarth wrote:
> Richard,
> We have an analysis on the cause of the breakage of
> exception handling at r147995 on x86_64-apple-darwin10 (PR41260)...
>
> http://lists.cs.uiuc.edu/pipermail/llvmdev/2009-September/025908.html
> http://lists.cs.uiuc.edu/pipermail/llvmdev/2009-September/025909.html
>
> The additional epilog unwind information is breaking the
> 'running' of the dwarf unwind info. The options to fix it are either
> to 1) not add epilog unwind information for Darwin or 2) have the
> gcc driver implicitly add -no_compact_unwind to the link line for
> Darwin.
> Can you propose a patch to achieve the first solution of not
> adding the additional epilog unwind information on darwin so I
> can test that solution? Thanks in advance.
I'm the wrong Richard to address here.
Richard.