Bug#886736: diffoscope: mach-o disassembly with otool can fail in a way that fools diffoscope into dumping raw data instead

[Mike Hommey]

On Tue, Jan 09, 2018 at 01:07:58PM +0000, Chris Lamb wrote:
> Hi Mike,
> 
> > I only have a very large XUL library... you probably don't want that.
> 
> Probably not for the testsuite (!) but if you could make it available it
> would help with a fix anyway...

The two builds I was comparing:
https://queue.taskcluster.net/v1/task/AKmfRsZPQjqkc7ZoBmS2zw/runs/0/artifacts/public/build/target.dmg
https://queue.taskcluster.net/v1/task/Hs2lbc9dTFi4eXjwwM26NA/runs/0/artifacts/public/build/target.dmg

The corresponding diff:
https://queue.taskcluster.net/v1/task/QRazQl4PQZeuiU81C9PtlA/runs/0/artifacts/public/diff.html

Note that the actual diff you get is:
https://queue.taskcluster.net/v1/task/Uhv3G5XUQA6DDFrOhErA9Q/runs/0/artifacts/public/diff.html

which has more differences. Stripping the binaries first gets the first
diff. I should probably file another bug about that, those differences
show up when comparing nm -a output.

Mike