




 
The variable 
*stack-overflow-behaviour* 
controls behavior when stack overflow occurs.
When 
*stack-overflow-behaviour*
 is set to 
:error
, LispWorks signals an error.
When it is set to 
:warn
, LispWorks increases the stack size automatically to accommodate the overflow, but prints a warning message to signal that this has happened.
When it is set to 
nil
, LispWorks increases stack size silently.
In LispWorks 4.4 and previous on Windows and Linux platforms, automatic stack extension is not implemented. This has been fixed in LispWorks 5.0 and later.