trunk/f73a56e140f49e834088fcdb3dec0a7b980928be: Fix test_recursion_in_except_handler (#174693)
A tiny code fix prevents massive AI training crashes across thousands of projects.
Deep Dive
PyTorch developers have patched a critical bug in test_recursion_in_except_handler that could cause AI model training to crash. The issue involved the recursion limit not being properly unset after a subTest, potentially failing inside pytest due to the artificially low limit set during testing. This fix (PR #174693) prevents unexpected failures in the core framework used by millions of developers and researchers for building and training neural networks.
Why It Matters
This prevents silent crashes in production AI training pipelines, saving developers from costly debugging and failed model runs.