I have also gotten a memory corruption with the given input file, and with
'digraph g {v [label="fmnosyy cemnnoopt definr\Einoprx\Eeionprssx aceert"]}'
as input. The directory names are sorted versions of those in N44 of the
original input, and the backslashes and newlines have been space-ified.If I shorten this by one character I get an assertion error in malloc.c:3096. If I remove one of the '\E's or replace it by anything else I've come up with (trying '\e', 'ee', 'E' and 'EE' for a start), I get normal output. If I run dot with -v, the crash happens right after 'loadimage : (lib) eps gd gd2 gif jpe jpeg jpg png ps svg' though it is now a segfault rather than a memory corruption. The same thing happens with neato, fdp, circo and twopi, also if I tweak the output format parameter (tested: -Tpng, -Tsvg, -Tpdf). Perhaps that not surprising, since that 'loadimage' comes before the layout algorithm begins in the -v logorrhea ;-) Looking at upstream (hg clone http://hg.research.att.com/graphviz), revision 9118 (most recent at the time of writing) didn't crash on the shrunk input, nor the original. 8833 claims to have fixed a memory/free issue, but it didn't build for me. I did a hg bisect -c 'make -j' which spat out rev 9084, "start 2.31 development series". It compiled, and ran on the two input files without a hiccup. I hope this helps figure out what's going on :-) Cheerio, JK
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