Target Language Compiler

Asserts, Errors, Warnings, and Debug Messages

The related assert, error, warning, and debug message directives are

• %assert expression
  %error tokens
  %warning tokens
  %trace tokens
  %exit tokens
  

These directives produce error, warning, or trace messages whenever a target file detects an error condition, or tracing is desired. All of the tokens following the directive on a line become part of the generated error or warning message.

The Target Language Compiler places messages generated by %trace onto stderr if and only if you specify the verbose mode switch (-v) to the Target Language Compiler. See Command Line Arguments for additional information about switches.

The %assert directive will evaluate the expression and will produce a stack trace if the expression evaluates to a Boolean false.

Note    In order for %assert directives to be evaluated, Enable TLC Assertions must be selected on the TLC debugging section of the Real-Time Workshop dialog. The default action is for asserts not to be evaluated.

The %exit directive reports an error and stops further compilation.

Input File Control

Built-In Functions and Values