BUG #8587: quantile segfaults when quantile out of [0;1] range

The following bug has been logged on the website:

Bug reference:      8587
Logged by:          strexxx
Email address:      stephane.wustner@lip6.fr
PostgreSQL version: 9.3.0
Operating system:   ubuntu 13.04
Description:

I know this is not the place to submit for the quantile extension, but the
git hub new issue button is broken.


2013-11-11 18:05:53 CET LOG:  server process (PID 28207) was terminated by
signal 11: Segmentation fault
2013-11-11 18:05:53 CET DETAIL:  Failed process was running: select
quantile(generate_series,50) from generate_series(0,997);


I know quantile expect double precision within [0;1], but, maybe you would
like to know it segfaults.