Merge pull request #289 from geoffw0/change-notes

CPP: Additional change notes.

Author: jbj

change-notes/1.19/analysis-cpp.md

@@ -6,14 +6,16 @@
 
 | **Query**                   | **Tags**  | **Purpose**                                                        |
 |-----------------------------|-----------|--------------------------------------------------------------------|
-| *@name of query (Query ID)* | *Tags*    |*Aim of the new query and whether it is enabled by default or not*  |
+| Cast from char* to wchar_t* | security, external/cwe/cwe-704 | Detects potentially dangerous casts from char* to wchar_t*.  Enabled by default on LGTM. |
 
 ## 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. |
 | Missing return statement (`cpp/missing-return`) | Visible by default | The precision of this query has been increased from 'medium' to 'high', which makes it visible by default in LGTM. It was 'medium' in release 1.17 and 1.18 because it had false positives due to an extractor bug that was fixed in 1.18. |
+| Call to memory access function may overflow buffer | More correct results | Array indexing with a negative index is now detected by this query. |
+| Suspicious add with sizeof | Fewer false positive results | Arithmetic with void pointers (where allowed) is now excluded from this query. |
 | Wrong type of arguments to formatting function | Fewer false positive results | False positive results involving typedefs have been removed.  Expected argument types are determined more accurately, especially for wide string and pointer types.  Custom (non-standard) formatting functions are also identified more accurately. |
 
 ## Changes to QL libraries