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codeql/change-notes/1.20/analysis-cpp.md
2019-01-10 12:56:16 +00:00

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# Improvements to C/C++ analysis
## General improvements
* The logic for identifying auto-generated files via `#line` directives has been improved.
## New queries
| **Query** | **Tags** | **Purpose** |
|-----------------------------|-----------|--------------------------------------------------------------------|
## Changes to existing queries
| **Query** | **Expected impact** | **Change** |
|----------------------------|------------------------|------------------------------------------------------------------|
| Suspicious pointer scaling (`cpp/suspicious-pointer-scaling`) | Fewer false positives | False positives involving types that are not uniquely named in the snapshot have been fixed. |
| Unused static variable (`cpp/unused-static-variable`) | Fewer false positive results | Variables with the attribute `unused` are now excluded from the query. |
| Resource not released in destructor (`cpp/resource-not-released-in-destructor`) | Fewer false positive results | Fix false positives where a resource is released via a virtual method call. |
## Changes to QL libraries
There is a new `Namespace.isInline()` predicate, which holds if the namespace was declared as `inline namespace`.