svg_printf should trim the string size to avoid such problem.
Comments:
[ellson] I believe that this bug has already been fixed in CVS, and in the nightly
snapshots from http://www.graphviz.org/pub/graphviz/CURRENT/
All URL strings are now output using svg_fputs().
If you still have a counterexample, please send a test case ASAP.
Owner: ellson
Status: Fixed