Jan Hubicka wrote:
quoted text
>> Yes, if there are four kernels that get it "wrong", that effectively means
>> that the ABI document doesn't describe reality and gcc has to adjust.
> 
> Kernels almost never follow ABI used by applications to last detail.
> Linux kernel is disabling red zone and use kernel code model, yet the
> ABI is not going to be adjusted for that.
> 
> This is resonably easy to fix on kernel side in signal handling, or by
> removing std usage completely (I believe it is not performance win, but
> some benchmarking would be needed to double check)

That's not the issue.  The issue is that the kernel leaks the DF from 
the code that took a signal to the signal handler.

	-hpa
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