[Bug 3637] New: QVMs are allowed to dereference NULL

[bugzilla-daemon at icculus.org]

http://bugzilla.icculus.org/show_bug.cgi?id=3637

           Summary: QVMs are allowed to dereference NULL
           Product: Quake 3
           Version: unspecified
          Platform: Macintosh
        OS/Version: Linux
            Status: NEW
          Severity: minor
          Priority: P3
         Component: Misc
        AssignedTo: zakk at icculus.org
        ReportedBy: thebenmachine at googlemail.com
         QAContact: quake3-bugzilla at icculus.org


The null pointer is guaranteed by C standards to never contain any valid object
or function, but Quake's virtual machines seem to allow both writing to and
reading from NULL without any obvious side-effects.

I suggest that if the QVM tries to dereference a null pointer the server binary
should immediately terminate it with an appropriate error message.


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