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  ANSI Common Lisp   9 Conditions   9.2 Dictionary of Conditions

9.2.16 method-combination-error Function

Syntax:
method-combination-error format-control &rest args    implementation-dependent

Arguments and Values:
format-control - a format control.

args - format arguments for format-control.

Description:
The function method-combination-error is used to signal an error in method combination.

The error message is constructed by using a format-control suitable for format and any args to it. Because an implementation may need to add additional contextual information to the error message, method-combination-error should be called only within the dynamic extent of a method combination function.

Whether method-combination-error returns to its caller or exits via throw is implementation-dependent.

Side Effects:
The debugger might be entered.

Affected By:
*break-on-signals*

See Also:
define-method-combination

Allegro CL Implementation Details:
None.

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