## 5.3.0

### Deprecated APIs

* The class `AbstractValue` in the `Guards` library has been deprecated and replaced with the class `GuardValue`.

### Major Analysis Improvements

* The representation of the C# control-flow graph has been significantly changed. This has minor effects on a wide range of queries including both minor improvements and minor regressions, for example, improved precision has been observed for `cs/inefficient-containskey` and `cs/stringbuilder-creation-in-loop`. Two queries stand out as being significantly affected with great improvements: `cs/dereferenced-value-may-be-null` has been completely rewritten which removes a very significant number of false positives. Furthermore, `cs/constant-condition` has been updated to report many new results - these new results are primarily expected to be true positives, but a few new false positives are expected as well. As part of these changes, `cs/dereferenced-value-may-be-null` has been changed from a `path-problem` query to a `problem` query, so paths are no longer reported for this query.

### Minor Analysis Improvements

* Added tracer support for macOS and Linux when the .NET CLI (`dotnet`) directly invokes the C# compiler (`csc`). This enhancement provides basic tracing and extraction capabilities for .NET 10 RC2 on these platforms.
* The extraction of location information for source code entities has been updated to use star IDs (`*` IDs). This change should be transparent to end-users but may improve extraction performance in some cases by reducing TRAP file size and eliminating overhead from location de-duplication.