When Safe Optimization is in effect, the VLISP compiler ignores an optimization option if it determines that adhering to the option may induce an error condition. The following list identifies the conditions under which an option is ignored:

Link

If the compiler encounters the following situations while Safe Optimize is on, it ignores any related Link directive:

• A symbol is bound as a parameter anywhere in the project.
• A symbol is bound as an auxiliary variable and referenced by value anywhere in the project.
• A symbol is explicitly assigned somewhere (by setq).

Drop

If the compiler encounters a symbol referenced by value, it ignores any Drop directive for the symbol.

Localize

If the compiler encounters the following situations while safe optimize is on, it ignores the Localize directive or the corresponding variable:

• A variable has a non-local reference or assignment to it within the project.
• A variable is called by name.