[issue34705] Python 3.8 changes how returns through finally clauses are traced
Serhiy Storchaka
report at bugs.python.org
Sun Sep 16 10:39:02 EDT 2018
Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:
Humm, the optimization is not related here. Even if it is not involved (replace 17 with []), the line 4 is reported twice, because RETURN_VALUE is executed after CALL_FINALLY.
4 10 BUILD_LIST 0
12 POP_BLOCK
14 CALL_FINALLY 2 (to 18)
16 RETURN_VALUE
In 3.7 RETURN_VALUE was the opcode executed at line 4. The stack of blocks was unwinded at interpreted loop implicitly when execute RETURN_VALUE. But in 3.8 calling the finally code is explicit.
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nosy: +Mark.Shannon
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<https://bugs.python.org/issue34705>
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