Fix array overflow bug in bdiff I ran into a bug while importing a large repository into mercurial. The diff algorithm does not allocate a big enough array of hunks for some test cases. This results in memory corruption, and possibly, as in my case, a seg fault. You should be able to reproduce this problem with any case of more than a few lines that follows this pattern: a b = = 1 1 2 2 3 4 3 5 . 4 . . 5 . . . I.e., "a" has blank lines on every other line that have been removed in "b". In this case, the number of matching hunks is equal to the number of lines in "b". This is more than ((an + bn)/4 + 2). I'm not sure what motivates this formula, but when I changed it to the smaller of an or bn (+ 1), it works. [comment added by mpm]

include hg
recursive-include mercurial *.py
include hgweb.cgi
include hgeditor rewrite-log
include tests/README tests/run-tests tests/test-*[a-z0-9] tests/*.out
prune tests/*.err
include *.txt
include templates/map templates/map-*[a-z0-9]
include templates/*.tmpl
include doc/README doc/*.txt doc/Makefile
recursive-include contrib *
include README
include CONTRIBUTORS
include COPYING
include TODO
include MANIFEST.in