trust-dynamic-extent-declarations-switch

$Revision: 5.0.2.3 $

Variable

Package: COMPILER

The value of this variable can be t, nil, or a function object that accepts four arguments and returns t or nil. The arguments passed to the function will be the values of the safety, space, speed, and debug optimization qualities, in that order. nil is equivalent to a function that always returns nil and t to a function that always returns t. When we say t (or true) or nil (or false) in the text below, we mean that the function returns, respectively, t or nil.]

If true, the compiler will trust dynamic-extent declarations in code and produce code (when it can) that is optimized given the declarations. This switch is separated from the general trust-declarations-switch because when using multiprocessing, trusting dynamic-extent declarations may be unsafe when trusting other declarations is safe.

Initially true when speed is greater than safety.

See compiling.htm for information on the compiler.

See introduction.htm for a general description of the documentation and index.htm for an index.

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