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12 Cross-Referencing Facility

by Eric Marsden

The CMUCL cross-referencing facility (abbreviated XREF) assists in the analysis of static dependency relationships in a program. It provides introspection capabilities such as the ability to know which functions may call a given function, and the program contexts in which a particular global variable is used. The compiler populates a database of cross-reference information, which can be queried by the user to know:

A global variable is either a dynamic variable or a constant variable, for instance declared using defvar or defparameter or defconstant.


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