laststring is derefed even before it is overwritten #142433

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laststring is derefed even before it is overwritten#142433

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interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

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SiliconA-Z

opened on Dec 8, 2025

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Bug description:

It shouldbe dereferenced after the write is done, not before.

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Linked PRs

• gh-142433: Move deref to below the error when checking for laststring #142402
• [3.14] gh-142433: Move deref to below the error when checking for laststring (GH-142402) #142524

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interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

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