Re: plperl sigfpe reset can crash the server

On Friday, August 24, 2012 06:55:04 AM Tom Lane wrote:
> Andres Freund <andres@2ndquadrant.com> writes:
> > On Thursday, August 23, 2012 12:17:22 PM Andres Freund wrote:
> >> While debugging an instance of this bug I noticed that plperlu always
> > 
> >> removes the SIGFPE handler and sets it to ignore:
> > In fact it can be used to crash the server:
> Um ... how exactly can that happen, if the signal is now ignored?
My man 2 signal tells me:
"According  to POSIX, the behavior of a process is undefined after it ignores 
a SIGFPE, SIGILL, or SIGSEGV signal that was not generated by kill(2) or 
raise(3)."

Killing the process is a kind of undefined behaviour ;)

Andres

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