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C#: Add neutral model for System.ComponentModel.PropertyDescriptor.GetValue - #20627
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aschackmull merged 1 commit intoOct 14, 2025
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October 12, 2025 13:21
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Pull Request Overview
This PR disables the automatically generated flow summary for System.ComponentModel.PropertyDescriptor.GetValue by adding a neutral model. The change prevents potential type safety issues where the method's object -> object signature could lead to incorrect upcasting and downcasting of known specific types to incompatible property types.
- Adds a manual neutral model for
PropertyDescriptor.GetValueto override the auto-generated flow summary - Removes the problematic
dfc-generatedflow summaries from test expectations for bothSystem.ComponentModel.PropertyDescriptorandNewtonsoft.Json.Linq.JPropertyDescriptor
Reviewed Changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| System.ComponentModel.model.yml | Adds neutral model configuration to disable flow summary for PropertyDescriptor.GetValue |
| FlowSummaries.expected | Updates test expectations by removing auto-generated summaries and adding neutral model entries |
| FlowSummariesFiltered.expected | Removes the filtered flow summary entry for PropertyDescriptor.GetValue |
aschackmull
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Oct 14, 2025
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Dca shows zero impact. Merging. |
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This PR disables the flow-generated summary for
PropertyDescriptor.GetValue. The problem with this summary is that it has typeobject -> object, which means that we risk first upcasting a known specific typettoobject, and then subsequently downcasting it to a different type, which does not correspond to the type of any property oft.