gh-104602: ensure all cellvars are known up front #104603
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
(Fixed the trivial merge conflict with #104528, will review the code tomorrow) |
<
8000
a href="/python/cpython/pull/104603/commits/9f814a4dc1018955be751b7797bfe20fdb706dc2" class="Link--secondary">9f814a4
JelleZijlstra
approved these changes
May 18, 2023
* main: pythongh-74690: Don't set special protocol attributes on non-protocol subclasses of protocols (python#104622) pythongh-104623: Update Windows installer to use SQLite 3.42.0 (python#104625) pythongh-104050: Add more type annotations to Argument Clinic (python#104628) pythongh-104629: Don't skip test_clinic if _testclinic is missing (python#104630) pythongh-104549: Set __module__ on TypeAliasType (python#104550) pythongh-104050: Improve some typing around `default`s and sentinel values (python#104626) pythongh-104146: Remove unused vars from Argument Clinic (python#104627) pythongh-104615: don't make unsafe swaps in apply_static_swaps (python#104620) pythonGH-104484: Add case_sensitive argument to `pathlib.PurePath.match()` (pythonGH-104565) pythonGH-96803: Document and test new unstable internal frame API functions (pythonGH-104211) pythonGH-104580: Don't cache eval breaker in interpreter (pythonGH-104581)
JelleZijlstra
approved these changes
May 18, 2023
JelleZijlstra
added a commit
to JelleZijlstra/cpython
that referenced
this pull request
May 19, 2023
This threw a SystemError before python#104603. Adding a separate test because this was a different failure mode than the other two new tests from python#104603, both of which used to segfault.
carljm
pushed a commit
that referenced
this pull request
8000
May 19, 2023
carljm
added a commit
to gsallam/cpython_with_perfmap_apii
that referenced
this pull request
May 20, 2023
* main: (30 commits) pythongh-103987: fix several crashes in mmap module (python#103990) docs: fix wrong indentation causing rendering error in dis page (python#104661) pythongh-94906: Support multiple steps in math.nextafter (python#103881) pythongh-104472: Skip `test_subprocess.ProcessTestCase.test_empty_env` if ASAN is enabled (python#104667) pythongh-103839: Allow building Tkinter against Tcl 8.7 without external libtommath (pythonGH-103842) pythongh-85984: New additions and improvements to the tty library. (python#101832) pythongh-104659: Consolidate python examples in enum documentation (python#104665) pythongh-92248: Deprecate `type`, `choices`, `metavar` parameters of `argparse.BooleanOptionalAction` (python#103678) pythongh-104645: fix error handling in marshal tests (python#104646) pythongh-104600: Make type.__type_params__ writable (python#104634) pythongh-104602: Add additional test for listcomp with lambda (python#104639) pythongh-104640: Disallow walrus in comprehension within type scopes (python#104641) pythongh-103921: Rename "type" header in argparse docs (python#104654) Improve readability of `typing._ProtocolMeta.__instancecheck__` (python#104649) pythongh-96522: Fix deadlock in pty.spawn (python#96639) pythonGH-102818: Do not call `PyTraceBack_Here` in sys.settrace trampoline. (pythonGH-104579) pythonGH-103545: Add macOS specific constants for ``os.setpriority`` to ``os`` (python#104606) pythongh-104623: Update macOS installer to SQLite 3.42.0 (pythonGH-104624) pythongh-104619: never leak comprehension locals to outer locals() (python#104637) pythongh-104602: ensure all cellvars are known up front (python#104603) ...
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Because
u_cellvarsandu_freevarsshare the same index-space and must not reuse the same indices, all cellvars must be populated incompiler_enter_scope, and never lazily. (So that freevars can begin at the right index offset.)This means that
compiler_enter_scopemust already know about all cellvars up front, including those in inlined comprehensions.But we can't promote all inlined-comprehension cells to be handled as cells throughout the function; if the name is global in outer scope, it must stay that way in order to resolve names correctly. So we need the symtable to record the fact that a symbol is a cellvar in an inlined scope, so
compiler_enter_scopecan include it inu_cellvars.This issue only shows up in the case where we have an inlined comprehension containing both a cell var and a free var, and the cell var is a global in the outer scope.