If I'm misunderstanding you or you have a better approach which doesn't involve running the code, please let me know. (Hmm, creating local test suites targeting external modules?)

What I was thinking off was something like this. If Bar::foo(N) has a bug where it dies where N=0, when it should just return -1, then I might only apply my patch where eval { Bar::foo(0) } == -1 is false.

Of course this relies on whatever broken behaviour we're looking for being cheap to test for with no side effects. Make vague sense?

In reply to Re^3: Upgrade-proofing overridden subroutines by adrianh
in thread Upgrade-proofing overridden subroutines by Ovid

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