Re: plperl sigfpe reset can crash the server

On Saturday, August 25, 2012 06:38:09 AM Tom Lane wrote:
> Andres Freund <andres@2ndquadrant.com> writes:
> > Doing a pqsignal(SIGFPE, FloatExceptionHandler) after PERL_SYS_INIT3
> > seems to work. Is that acceptable?
> 
> Surely that's breaking perl's expectations, to more or less the same
> degree they're breaking ours?
Well. Their expectation simply does not work *at all* because they do 
something (setting SIGFPE to SIG_IGN) which is completely ignored on at least 
one major platform (x86 linux) for longer than it has git history.

Their math code seems to work around generating such errors, but I find it 
rather hard to read (or rather read & understand).

Doing what I proposed admittedly has the issue that we would jump out of perl 
code without much ado. I have no idea whats the proper perly way to do so is.
It just seems we should do something...

if (in_perl)  return;

Would be the equivalent of what they want?

Greetings,

Andres
-- 
Andres Freund        http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services