codeql/change-notes/1.20/analysis-cpp.md

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