8000 gh-93554: Conditional jumps only jump forward by iritkatriel · Pull Request #96318 · python/cpython · GitHub
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gh-93554: Conditional jumps only jump forward #96318

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Merged
merged 11 commits into from
Sep 1, 2022
Merged

gh-93554: Conditional jumps only jump forward #96318

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c9e1106
transform conditional backward branches
iritkatriel Aug 26, 2022
28e8bbd
remove directed conditional branch opcodes
iritkatriel Aug 26, 2022
5c983d8
update dis.rst
iritkatriel Aug 26, 2022
bf1c52f
Merge remote-tracking branch 'upstream/main' into conditional_jump_on…
iritkatriel Aug 26, 2022
8a3d017
use basicblock_last_instr
iritkatriel Aug 26, 2022
97a80aa
add news
iritkatriel Aug 26, 2022
718025d
Merge remote-tracking branch 'upstream/main' into conditional_jump_on…
iritkatriel Aug 30, 2022
22e0b30
fix versionadded in dis.rst
iritkatriel Aug 31, 2022
e31029b
Merge remote-tracking branch 'upstream/main' into conditional_jump_on…
iritkatriel Aug 31, 2022
35a47ee
Merge remote-tracking branch 'upstream/main' into conditional_jump_on…
iritkatriel Sep 1, 2022
e87887c
magic number
iritkatriel Sep 1, 2022
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magic number
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@iritkatriel
iritkatriel committed Sep 1, 2022
commit e87887caa54e23c4dfcbd22caab81398c53a875f
4 changes: 2 additions & 2 deletions Lib/importlib/_bootstrap_external.py
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Expand Up @@ -412,7 +412,7 @@ def _write_atomic(path, data, mode=0o666):
# Python 3.12a1 3506 (Add BINARY_SLICE and STORE_SLICE instructions)
# Python 3.12a1 3507 (Set lineno of module's RESUME to 0)
# Python 3.12a1 3508 (Add CLEANUP_THROW)
# Python 3.12a1 3509 (remove conditional jump opcodes with forward/backward direction)
# Python 3.12a1 3509 (Conditional jumps only jump forward)

# Python 3.13 will start with 3550

Expand All @@ -425,7 +425,7 @@ def _write_atomic(path, data, mode=0o666):
# Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
# in PC/launcher.c must also be updated.

MAGIC_NUMBER = (3508).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3509).to_bytes(2, 'little') + b'\r\n'

_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c

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