[issue42899] Possible regression introduced by bpo-42615

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[issue42899] Possible regression introduced by bpo-42615

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[issue42899] Possible regression introduced by bpo-42615

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[issue42899] Possible regression introduced by bpo-42615

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[issue42899] Possible regression introduced by bpo-42615

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[issue42899] Possible regression introduced by bpo-42615

Steve Stagg added the comment: Apologies, script should have read: class B: def __bool__(self): print("bool(B)") raise AttributeError("don't do that!") b = B() try: if b: pass except AttributeError: print("GOT ERROR") raise IndexError("Should GET THIS")

[issue42899] Possible regression introduced by bpo-42615

New submission from Steve Stagg : This was raised by Mats Wichmann on the python-dev list. Commit : c71581c7a4192e6ba9a79eccc583aaadab300efa bpo-42615: Delete redundant jump instructions that only bypass empty blocks (GH-23733) appears to have changed the behaviour of the following code: