As a dual to the changes in AbstractProcessor done under JDK-8146726, the annotation processing framework in javac could be hardened against various kinds of irregular behavior from processors. The hardening can include just warning about redundant but not strictly incorrect information.
            
- relates to
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                    JDK-8237450 JDK13 annotation processors not run when a supported annotation type specifies a module -           
- Resolved
 
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                    JDK-8146726 Improve AbstractProcessor to issue warnings for repeated information -           
- Resolved
 
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