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Version 5.1.1 (R13SP1+) Real-Time Workshop Software

This table summarizes what's new in V5.1.1 (R13SP1+):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes Details below	Yes—Details labeled as Compatibility Considerations, below. See also Summary.	Fixed bugs	No

New features and changes introduced in this version are

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

• Error Resulting from Inaccessible Signal Reporting No Longer Reported

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 can be constructed only 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 — x.field.field == x.

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

Error Resulting from Inaccessible Signal Reporting No Longer Reported

Compatibility Considerations

In previous releases, Simulink and the Real-Time Workshop software reported an error whenever a Floating Scope or a user-written S-function tried to access an inaccessible signal during simulation or code generation. In this release, Simulink displays only a warning if you use the sim command to start the simulation. The Real-Time Workshop software generates neither a warning nor an error message.

Version 5.2 (R13SP2) Real-Time Workshop Software

Version 5.1 (R13SP1) Real-Time Workshop Software

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