Skip to content

gh-145858: Remove DELETE_DEREF bytecode instruction #148185

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Siyet wants to merge 4 commits into
base: main
Choose a base branch
from
Open

gh-145858: Remove DELETE_DEREF bytecode instruction #148185

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
0a2cd4d
gh-145858: Remove DELETE_DEREF bytecode instruction
Apr 6, 2026
b67f553
Fix CI: regenerate test_frozenmain.h, add removed HTML ID, add NEWS e…
Apr 6, 2026
04c744d
Regenerate test_frozenmain.h with non-free-threading build
Apr 6, 2026
0aad132
Add CPython bytecode changes section to whatsnew/3.15.rst
Apr 7, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
Fix CI: regenerate test_frozenmain.h, add removed HTML ID, add NEWS e… 
…ntry
  • Loading branch information
aleksandr.tseluyko committed Apr 6, 2026
commit b67f553cc4ef2d0ea1dbdb05910d059793a06852
1 change: 1 addition & 0 deletions Doc/tools/removed-ids.txt
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1 +1,2 @@
# HTML IDs excluded from the check-html-ids.py check.
library/dis.html: opcode-DELETE_DEREF
Copy link
Copy Markdown
Member

@StanFromIreland StanFromIreland Apr 6, 2026

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I would suggest instead having a 'CPython bytecode changes' section in the what's new, like we had for 3.14, and redirecting to there, but this isn't my area so I'll leave it to the experts.

Copy link
Copy Markdown
Author

@Siyet Siyet Apr 7, 2026

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Good point, thanks! Added a "CPython bytecode changes" section to Doc/whatsnew/3.15.rst following the 3.14 pattern. Kept removed-ids.txt as well since it's needed for the CI HTML ID check independently.

3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Core_and_Builtins/2026-04-06-18-00-00.gh-issue-145858.RmDlDf.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Remove the ``DELETE_DEREF`` bytecode instruction. Deletion of closure
variables is now implemented using ``LOAD_DEREF`` + ``POP_TOP`` +
``PUSH_NULL`` + ``STORE_DEREF``.
30 changes: 15 additions & 15 deletions Programs/test_frozenmain.h
View file
Open in desktop

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

Loading