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codeql/change-notes/1.19/analysis-cpp.md
2018-09-23 16:24:31 -07:00

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# Improvements to C/C++ analysis
## General improvements
## New queries
| **Query** | **Tags** | **Purpose** |
|-----------------------------|-----------|--------------------------------------------------------------------|
| *@name of query (Query ID)* | *Tags* |*Aim of the new query and whether it is enabled by default or not* |
## Changes to existing queries
| **Query** | **Expected impact** | **Change** |
|----------------------------|------------------------|------------------------------------------------------------------|
| Resource not released in destructor | Fewer false positive results | Placement new is now excluded from the query. |
## Changes to QL libraries
* Added a hash consing library for structural comparison of expressions.