verify-argument-count-switch

As with all compiler switch variables, the value of this variable can be t, nil, or a function object that accepts five arguments and returns t or nil. The arguments passed to the function will be the values of the safety, space, speed, debug, and compilation-speed 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 the value is a function and 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 add code that checks that the correct number of arguments are passed to a function. Initially true if speed is less than 3 or safety is greater than 0.

See compiling.htm for information on the compiler.

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This page was not revised from the 8.2 page.
Created 2012.5.30.