Number: 1560
Title: Crashes by VRML output when current directory is not writable.
Submitter: IKEDA Soji
Date: Wed Jan 28 02:35:34 2009
Subsys: Dot
Version: 2.20.3
System: *-*-
Severity: major
Problem:
When

o current working directory is not writable by user,
o output filename is not specified (using -o option) and
o output format is specified as VRML (-Tvrml),
dot crashes with SEGFAULT.

I suppose this is because the path of node*.png is given by that of output file name in plugins/gd/gvrender_gd_vrml.c:nodefilename().
Input:

cd /a/directory/unwritable/by/me
dot -Tvrml source.dot > /tmp/dest.vrml
Owner: *
Status: *