[Varnish] #409: Segmentation fault with malformed regex ~!

[Varnish]

#409: Segmentation fault with malformed regex ~!
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 Reporter:  eugaia    |       Owner:  phk
     Type:  defect    |      Status:  new
 Priority:  normal    |   Milestone:     
Component:  varnishd  |     Version:  2.0
 Severity:  major     |    Keywords:     
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 I have experienced a segmentation fault with a VCL entry like

 if ( req.url ~ ! "\.(png|jpg|gif|js|css)$" ) { ... }  # incorrect regex
 check syntax

 which could (correctly) read

 if (! req.url ~ "\.(png|jpg|gif|js|css)$" ) { ... }

 When loading a VCL file with this in it, it caused Varnish to crash,
 indicating a segmentation fault.  Also, when trying to restart Varnish, it
 indicated that there was a segmentation fault rather than simply saying
 that the VCL wasn't valid.

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Ticket URL: <http://varnish.projects.linpro.no/ticket/409>
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