gh-156091: Fix crash compiling deeply nested inlined comprehensions - #156957
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…ions Count inlined-comprehension SETUP_FINALLY handlers toward CO_MAXBLOCKS so the compiler raises SyntaxError instead of overflowing the except stack. Co-authored-by: Cursor <cursoragent@cursor.com>
iritkatriel
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needs backport to 3.13
JelleZijlstra
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Sep 5, 2026
iritkatriel
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September 5, 2026 15:30
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Thanks @iritkatriel for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14, 3.15. |
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GH-156992 is a backport of this pull request to the 3.15 branch. |
bedevere-app
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needs backport to 3.15
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Sorry, @iritkatriel, I could not cleanly backport this to |
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GH-156993 is a backport of this pull request to the 3.14 branch. |
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GH-157050 is a backport of this pull request to the 3.13 branch. |
clin1234
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Sep 12, 2026
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Count inlined-comprehension SETUP_FINALLY handlers toward CO_MAXBLOCKS so the compiler raises SyntaxError instead of overflowing the except stack.
Fixes #156091.
_PyCfgExceptStack, bypassing theu_nfblocksblock-nesting limit #156091