Hi!
The following patch fixes a bug in SEH exception handling that made it
crash with ObjC (and most likely other languages as well). The problem
is that the SEH exception handler always passes the unwind exception as
4th parameter to RtlUnwindEx, which RtlUnwindEx then later passes to
the landing
Am 16.02.2014 um 16:47 schrieb Mike Stump :
> On Feb 15, 2014, at 9:27 AM, Jonathan Schleifer wrote:
>> The following patch fixes a bug in SEH exception handling that made it
>> crash with ObjC
>
> From an ObjC perspective, I’m fine with the work; though, an seh person
Am 18.02.2014 um 17:41 schrieb Kai Tietz :
> Hi Mike,
>
> the patch is reasonable, and my testings haven't shown any
> regressions. So from that POV patch would be ok.
> Nevertheless it would be good to have a bug-report for it, and it is a
> regression from SjLj.
I reported it being a regressi
Am Tue, 18 Feb 2014 17:51:00 +0100
schrieb Kai Tietz :
> So patch is ok with proper ChangeLog mentioning PR. Patch is ok for
> back-port too.
I wonder if the instaned of RtlUnwindEx that come before the patched
line should be changed as well, though.
--
Jonathan
There is also definitely a use-after-free if you call _Unwind_DeleteException
in your personality before returning _URC_INSTALL_CONTEXT (which you should, if
you don't want to leak and your landing pad doesn't call it). I'm not sure
though how to fix it. It seems the problem that register 0 is i
