On Wed, 2010-11-17 at 08:57 +0100, Hans de Goede wrote:

> This solution could be reverting the problem causing glibc change, or
> maybe changing it to do forward memcpy's while still using the new SSE
> instructions, or something more specific to the flash plugin, as long
> as it will automatically fix things with a yum upgrade without requiring
> any further user intervention.
> 
> I would also like to point out that if this were to happen in Ubuntu
> which we sometimes look at jealously for getting more attention / users
> then us, the glibc change would likely be reverted immediately, as that
> is the right thing to do from an end user pov.
> 
> I've filed a ticket for FESCo to look into this, as I believe this
> makes us look really bad, and the glibc maintainers do not seem to be
> willing to fix it without some sort of intervention:
> https://fedorahosted.org/fesco/ticket/501

Did anyone upstream look into a compatibility environment variable that
could be exported to change the direction of the memcpy? Yes, it's a
hack, but it would allow affected users to have an option.

Alternatively, I agree that this is one case where a wrapper hack would
also work for the flash plugin. I suspect, however, that other projects
will be affected and so a generic solution would help.

Jon.


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