5.4 ASSERT

Triggers error ASSERT if the supplied truth-valued expression tvexpr is false (1 is true, and 0 is false).

The ASSERT error is catchable whether using standard-style, FreeM-style, or DSM 2.0-style error processing.

Syntax

 ASSERT <tvexpr>

Example

USER> ASSERT 1=1
 
 
USER> ASSERT 1=0
 
 
>> Error ASSERT:  programmer assertion failed in SYSTEM::^%ZFREEM  [$STACK = 0]
>> ASSERT 1=0
              ^

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