mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-10-09 08:31:26 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 13

GH-96793: Change FOR_ITER to not pop the iterator on exhaustion. (GH-96801)

Browse source 
Change FOR_ITER to have the same stack effect regardless of whether it branches or not.
Performance is unchanged as FOR_ITER (and specialized forms jump over the cleanup code).
This commit is contained in:
Mark Shannon 2022-10-27 03:55:03 -07:00 • committed by GitHub
parent e60892f9db
commit 22863df7ca
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
14 changed files with 277 additions and 247 deletions
Download patch file Download diff file Expand all files Collapse all files

3
Lib/importlib/_bootstrap_external.py
View file

@ -423,6 +423,7 @@ _code_type = type(_write_atomic.__code__)
# Python 3.12a1 3507 (Set lineno of module's RESUME to 0)
# Python 3.12a1 3508 (Add CLEANUP_THROW)
# Python 3.12a1 3509 (Conditional jumps only jump forward)
# Python 3.12a1 3510 (FOR_ITER leaves iterator on the stack)
# Python 3.13 will start with 3550
@ -435,7 +436,7 @@ _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 = (3509).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3510).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c