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bpo-37830: Fix compilation of break and continue in finally. (GH-15320)

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Fix compilation of "break" and "continue" in the
"finally" block when the corresponding "try" block
contains "return" with a non-constant value.
This commit is contained in:
Serhiy Storchaka 2019-08-24 13:11:52 +03:00 • committed by GitHub
parent e9c90aa431
commit ef61c524dd
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11 changed files with 305 additions and 194 deletions
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3
Lib/importlib/_bootstrap_external.py
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@ -270,6 +270,7 @@ _code_type = type(_write_atomic.__code__)
# comprehensions #35224)
# Python 3.8b2 3412 (Swap the position of positional args and positional
# only args in ast.arguments #37593)
# Python 3.8b4 3413 (Fix "break" and "continue" in "finally" #37830)
#
# MAGIC must change whenever the bytecode emitted by the compiler may no
# longer be understood by older implementations of the eval loop (usually
@ -278,7 +279,7 @@ _code_type = type(_write_atomic.__code__)
# Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
# in PC/launcher.c must also be updated.
MAGIC_NUMBER = (3412).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3413).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c
_PYCACHE = '__pycache__'