[dynamo][ez] Initialize tracer_output to None by default. #167366
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Summary: In edge cases, tracer_output can be left unset if there's double exception raised which causes the following issue: ``` UnboundLocalError: local variable 'tracer_output' referenced before assignment ``` Default initialize this variable so that it's always present. Test Plan: CI Rollback Plan: Differential Revision: D82652815 Pull Request resolved: #163169 Approved by: https://github.com/tugsbayasgalan (cherry picked from commit 6189a5f)
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/167366
Note: Links to docs will display an error until the docs builds have been completed. ⏳ No Failures, 52 PendingAs of commit 5c98998 with merge base 4840a1a ( This comment was automatically generated by Dr. CI and updates every 15 minutes. |
atalman
approved these changes
Nov 7, 2025
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Summary:
In edge cases, tracer_output can be left unset if there's double exception raised which causes the following issue:
Default initialize this variable so that it's always present.
Test Plan:
CI
Rollback Plan:
Differential Revision: D82652815
cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @chenyang78 @kadeng @chauhang @amjames @Lucaskabela