[Bug 40328] Rayman 3 Crashes loading 2nd level.

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=40328

--- Comment #17 from Austin English <austinenglish at gmail.com> ---
(In reply to Lunknown from comment #16)
> Hello Austin English,
> 
> Do you have intructions on doing this? 
> 
> Cherry pick that commit before building (and revert before running git
> bisect good/bad or git will complain) to find the other regression.

https://wiki.winehq.org/Reverse_Regression_Testing

has some more info. What you'll want to do is a second bisect, between 1.3.36
and 1.3.37. Your goal is to find the commit that fixes the crash mid/end of
level (but before the second crash). So, do:

git bisect start
git bisect good wine-1.3.36 # crashes earlier
git bisect bad wine-1.3.37 # crashes later
./configure --disable-tests
make -j5

then test Rayman. If it crashes loading the second level, consider it bad, if
it crashes in first level, it's good.

That will eventually give you some commit, let's call it fixed_sha1.

To then find the original regression, do:
git bisect reset
git bisect start
git bisect good 1.3.22
git bisect bad 1.3.37

as normal. Now, it gets a bit different. For each build, you'll want to do:
git show $fixed_sha1 | patch -p1
./configure --disable tests
make -j5
git checkout -f # resets your tree to normal
# test rayman here
git bisect good/bad # as normal

hope that helps. Ping me on IRC (austin987) if you need more help, or ask on
the forums.

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