Is there a bug in libsvn_diff?

Hi,

I worked on a diff algorithm a lot recently (checkout the development code at http://xindiff.cvs.sourceforge.net/). I tried different implementations on this two files, (packed as follows)

http://xindiff.sourceforge.net/diff_t5.zip (t5.txt: 467354 lines, t6.txt: 334422 lines)

XinDiff takes about 3 minutes and finds out that the LCS count is 22926 and output html diff view, while the one using libsvn_diff (http://subversion.tigris.org/tools_contrib.html#diff) takes 30 minutes and does seems to get through. I suspect that there could be a dead loop.

Note that XinDiff does perfect LCS calculation and works as GNU diff with --minimal option.

Regards,
Albert
Received on Mon Aug 14 17:19:35 2006