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Update PureAttribute documentation to mention CA1806 analyzer enforcement #11949

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Copilot Oct 20, 2025
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Update PureAttribute docs to mention CA1806 analyzer enforcement
Copilot Oct 20, 2025
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2 changes: 1 addition & 1 deletion xml/System.Diagnostics.Contracts/PureAttribute.xml
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Expand Up @@ -56,7 +56,7 @@
<format type="text/markdown"><![CDATA[
## Remarks
Methods and types that are marked with this attribute can be used in calls to <xref:System.Diagnostics.Contracts.Contract?displayProperty=nameWithType> methods. Pure methods do not make any visible state changes. This attribute is not enforced by the current analysis tools; you should use this attribute only if you are sure that the methods are pure.
Methods and types that are marked with this attribute can be used in calls to <xref:System.Diagnostics.Contracts.Contract?displayProperty=nameWithType> methods. Pure methods do not make any visible state changes. The [CA1806](/dotnet/fundamentals/code-analysis/quality-rules/ca1806) code analyzer checks for this attribute and emits a diagnostic when the return value of a pure method isn't used.
]]></format>
</remarks>
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