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the cause of PR41260 is new additional epilog unwind information
- From: Jack Howarth <howarth at bromo dot med dot uc dot edu>
- To: rguenth at gcc dot gnu dot org, gcc at gcc dot gnu dot org
- Date: Fri, 18 Sep 2009 18:55:32 -0400
- Subject: the cause of PR41260 is new additional epilog unwind information
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.
Jack