Upstream Bug

Noun · Open Source

Definitions

  1. A bug originating in an upstream dependency, project, or provider rather than in the local code that is currently exhibiting the failure. In engineering practice, identifying an upstream bug changes whether the right response is patching locally, waiting, or contributing a fix upstream.

    In plain English: A bug that comes from an upstream dependency or project.

    Example: "After a day of debugging, they realized the crash was an upstream bug in the parser library and stopped blaming their own service for behavior it never controlled."

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