Title: gh-151763: Fix dealloc clears the in-flight exception in subtype_dealloc by Abhi210 · Pull Request #153548 · python/cpython · GitHub
Open Graph Title: gh-151763: Fix dealloc clears the in-flight exception in subtype_dealloc by Abhi210 · Pull Request #153548 · python/cpython
X Title: gh-151763: Fix dealloc clears the in-flight exception in subtype_dealloc by Abhi210 · Pull Request #153548 · python/cpython
Description: Fixes: #gh-151763 OOM-0023 subtype_dealloc() can clear the in-flight exception while tearing down heap-type instances. Unlike slot_tp_finalize(), this deallocation path does not preserve the current exception across operations that may perform arbitrary Py_DECREFs, potentially causing tstate->current_exception to be lost. This patch saves the current exception before the destructive teardown (clear_slots(), managed dict clearing, base deallocation, and type decref) and restores it afterward, mirroring the existing exception-preservation pattern used in slot_tp_finalize().
Open Graph Description: Fixes: #gh-151763 OOM-0023 subtype_dealloc() can clear the in-flight exception while tearing down heap-type instances. Unlike slot_tp_finalize(), this deallocation path does not preserve the curren...
X Description: Fixes: #gh-151763 OOM-0023 subtype_dealloc() can clear the in-flight exception while tearing down heap-type instances. Unlike slot_tp_finalize(), this deallocation path does not preserve the curren...
Opengraph URL: https://github.com/python/cpython/pull/153548
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