Added null-handling when recording host startup exception to current … - #1438
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danielgerlag merged 1 commit intoSep 6, 2026
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LGTM. StartHost() can return null when ActivitySource has no listeners (StartActivity contract); finally already used activity?.Dispose(), catch did not — this was masking real startup failures behind an NRE. One-line fix is correct.
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* Bump version to 3.21.0 Ship the host-startup Activity NRE fix (#1438), PostgreSQL Delay timezone fix (#1425 / #1440), and Cosmos DI client overload (#1439 / #1424). Co-authored-by: Daniel Gerlag <danielgerlag@users.noreply.github.com> * Fix EF DateTime timezone mismatch hanging Delay on PostgreSQL Same change as #1425 / #1440. Included here so 3.21.0 ships the fix even if the Copilot PR remains blocked by the coding-agent review rule. Co-authored-by: Daniel Gerlag <danielgerlag@users.noreply.github.com> --------- Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: Daniel Gerlag <danielgerlag@users.noreply.github.com>
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Describe the change
In WorkflowHost StartAsync if any exception occures, and there is no ActivityListener for WorkflowCore, then the catch block throws NullReferenceException due to accessing the null activity. This hides the original startup exception and makes impossible to see what had actually happen (eg. RabbitMQ queue provider connection issue, etc.)
Describe your implementation or design
Added a null-conditional operator to AddException
Tests
No
Breaking change
No