Don't recurse without bound in outerPath (backport) #9119
Merged
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This is a copy-paste solution from the 2.13.x branch of @milessabin philosophical PR #7178
It's an attempt at back-porting the solution to the 2.12.x branch.
Fixes scala/bug#10035
Honestly I have no idea why this should work, but the new test scenario passes on this branch too, so I'm making the attempt to merge it.
I would expect someone better positioned to evaluate potential errors in the solution.