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Hello,

> I've attached a diff that eliminates the crash from the reproduction 
> case
> given in the PR, and it passes all the libpthread conformance tests on 
> sparc.
> I'm not sure that it's correct to skip the rwindow_save() in all the 
> contexts
> that sa_upcall_getstate() is called, but I suspect it is.

Applied the patch, compiled - now I'll torture my U10 a bit.

have fun
Michael
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