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C++: Move Element.toString performance change note to 1.22 file #1401

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Merged
geoffw0 merged 2 commits into from
Jun 5, 2019
Merged

C++: Move Element.toString performance change note to 1.22 file #1401

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62246ec
Revert "Add release note blurb about TypeMention.toString()"
jbj Jun 5, 2019
9830c69
C++: Put tostring-performance note in 1.22 file
jbj Jun 5, 2019
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3 changes: 1 addition & 2 deletions change-notes/1.21/analysis-cpp.md
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- The taint tracking library now includes taint-specific edges for functions modeled in `semmle.code.cpp.models.interfaces.DataFlow`.
- The taint tracking library adds flow through library functions that are modeled in `semmle.code.cpp.models.interfaces.Taint`. Queries can add subclasses of `TaintFunction` to specify additional flow.
- There is a new `FoldExpr` class, representing C++17 fold expressions.
- The member predicates `DeclarationEntry.getUnspecifiedType`, `Expr.getUnspecifiedType`, and `Variable.getUnspecifiedType` have been added. These should be preferred over the existing `getUnderlyingType` predicates.
- The predicate `TypeMention.toString()` has been simplified to always return the string "`type mention`". This may improve performance when using `Element.toString()` or its descendants.
- The member predicates `DeclarationEntry.getUnspecifiedType`, `Expr.getUnspecifiedType`, and `Variable.getUnspecifiedType` have been added. These should be preferred over the existing `getUnderlyingType` predicates.
17 changes: 17 additions & 0 deletions change-notes/1.22/analysis-cpp.md
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# Improvements to C/C++ analysis

## General improvements

## New queries

| **Query** | **Tags** | **Purpose** |
|-----------------------------|-----------|--------------------------------------------------------------------|

## Changes to existing queries

| **Query** | **Expected impact** | **Change** |
|----------------------------|------------------------|------------------------------------------------------------------|

## Changes to QL libraries

- The predicate `TypeMention.toString()` has been simplified to always return the string "`type mention`". This may improve performance when using `Element.toString()` or its descendants.