Re: [patch] signal handler defaulting fix ...

[Linus Torvalds]

On Mon, 28 Jun 2004, Davide Libenzi wrote:
> 
> It's not that the program try to block the signal. It's the kernel that 
> during the delivery disables the signal. Then when the signal handler 
> longjmp(), the signal remains disabled. The next time the signal is raised 
> again, the kernel does not honor the existing handler, but it reset to 
> SIG_DFL.

So? That program is buggy. Setting the signal handler to SIG_DFL causes it 
to be killed with a nice "killed by SIGFPE" message, and now the bug is 
visible, and can be fixed.

Hint: it should have done a siglongjmp().

		Linus
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