# Segmentation fault in Index::Index#add\_document **URL:** \ **Category:** Ferret\ **Created:** [January 29, 2007, 6:05pm UTC](https://www.ruby-forum.com/t/segmentation-fault-in-index-index-add-document/83779 "2007-01-29T18:05:04Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![maz](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@maz](https://www.ruby-forum.com/u/maz)\ **Post date:** [January 29, 2007, 6:05pm UTC](https://www.ruby-forum.com/t/segmentation-fault-in-index-index-add-document/83779/1 "2007-01-29T18:05:04Z")
Hello, Here’s the code that segfaults: [http://pastie.caboo.se/36467](http://pastie.caboo.se/36467) I could have submitted a patch, but I’m not sure whether this segfault is caused by Ferret or Ruby. This seems to be triggered only when combining a split and a gsub on an empty string of the returned array, and trying to insert it directly into the index. However, there’s no problem when you duplicate or transform the string. – maz Rift Technologies - [http://rift.fr/](http://rift.fr/) ---
**Author:** ![maz](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@maz](https://www.ruby-forum.com/u/maz)\ **Post date:** [January 29, 2007, 6:56pm UTC](https://www.ruby-forum.com/t/segmentation-fault-in-index-index-add-document/83779/2 "2007-01-29T18:56:53Z")
Hi, reproduced here on Ubuntu Edgy Intel. Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1211037504 (LWP 6193)] 0xb79b878e in mb\_std\_advance\_to\_start (ts=0x816ae20) at analysis.c:156 156 { (gdb) bt #0 0xb79b878e in mb\_std\_advance\_to\_start (ts=0x816ae20) at analysis.c:156 Have you reported this on the bug tracker? [http://ferret.davebalmain.com/trac/report/1](http://ferret.davebalmain.com/trac/report/1) ## John. [http://johnleach.co.uk](http://johnleach.co.uk) ---
**Author:** ![maz](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@maz](https://www.ruby-forum.com/u/maz)\ **Post date:** [January 29, 2007, 11:25pm UTC](https://www.ruby-forum.com/t/segmentation-fault-in-index-index-add-document/83779/3 "2007-01-29T23:25:59Z")
John L. wrote: […] > Have you reported this on the bug tracker? > > [http://ferret.davebalmain.com/trac/report/1](http://ferret.davebalmain.com/trac/report/1) Done, thanks. I still think it’s probably a Ruby bug. – maz Rift Technologies - [http://rift.fr/](http://rift.fr/)