[asterisk-bugs] [Asterisk 0014226]: crash in comparation with 'nothing'

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
====================================================================== 
http://bugs.digium.com/view.php?id=14226 
====================================================================== 
Reported By:                caspy
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   14226
Category:                   General
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     new
Asterisk Version:           1.6.0.3-rc1 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
====================================================================== 
Date Submitted:             2009-01-13 04:04 CST
Last Modified:              2009-01-13 04:04 CST
====================================================================== 
Summary:                    crash in comparation with 'nothing'
Description: 
(i don't know which category to set, so 'General'. sorry)

i have such string in extentions.ael:
 if (${IFTIME(9:01-18:59|mon-fri|*|*?1)} = 1) { goto workinghours; };
(mention, that in IFTIME function i don't set 'false' condition)

in 'dialplan show' it became looking so:
 15. GotoIf($[${IFTIME(9:01-18:59|mon-fri|*|*?1)} = 1]?16:17) [pbx_ael]

and than, if i run this context at NONworking hours, asterisk crashes.
output from gdb:

Core was generated by `/usr/sbin/asterisk -f -g -q'.
Program terminated with signal 11, Segmentation fault.
http://bugs.digium.com/view.php?id=0  iftime (chan=0xb7a3ac30, cmd=0xb6e68db0
"IFTIME", data=0x0,
buf=0xb6e68e20 "", len=4096) at
/usr/home/caspy/compile/asterisk-1.6.0.3-rc1/include/asterisk/strings.h:196
196     AST_INLINE_API(
(gdb)


If i put 'false' condition, like:
  if (${IFTIME(9:01-18:59|mon-fri|*|*?1:0)} = 1) {....
everything becomes ok.

So, i think, this is because a comparation between digit and (NULL), but
in this case any kind of error would be better than full crash. ;)

====================================================================== 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-01-13 04:04 caspy          New Issue                                    
2009-01-13 04:04 caspy          Asterisk Version          => 1.6.0.3-rc1     
2009-01-13 04:04 caspy          Regression                => No              
2009-01-13 04:04 caspy          SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
======================================================================