*stack-overflow-behaviour* Variable

Summary

Controls behavior when stack overflow is detected.

Package

system

Initial Value

:error

Description

The variable *stack-overflow-behaviour* controls behavior when stack overflow is detected.

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.

Notes

Stack overflow is only detected when code was compiled with optimize qualities safety >= 1 or interruptible > 0 (see 9.5 Compiler controll). Code compiled with safety = 0 and interruptible = 0 can cause an undetected stack overflow that will crash LispWorks.

Compatibility notes

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.

See also

*sg-default-size*