Real-Time Workshop Release Notes

Chapter 2
Real-Time Workshop 5.1.1 Release Notes

New Features

The following new feature is provided in Version 5.1.1 of Real-Time Workshop.

New -dr Command Line Switch in TLC Detects Cyclic Record
Creation

The -dr command line option enables the Target Language Compiler to detect at run time when cyclic records are created and to produce a diagnostic message.

Cyclic records are problematic because they cause memory leaks in TLC. A cyclic record is one which ends up pointing to itself. They only can be constructed manually, as in the following example:

• %createrecord x { }    %% create an empty record x
  %createrecord y { }    %% create an empty record y
  
  %addtorecord x field y %% add a field to x which points to y
  %addtorecord y field x %% add a field to y which points to x
  

At this point, a cyclic record exists, i.e. x.field.field == x

As this feature significantly slows Target Language Compiler performance, it is off by default.

Known Software and Documentation Problems

Major Bug Fixes