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====== Standard Generic Function MAKE-INSTANCES-OBSOLETE ====== ====Syntax==== * **make-instances-obsolete** //class// → //class// ====Method Signatures==== * **make-instances-obsolete** (//class// **[[CL:Types:standard-class]]**//) * **make-instances-obsolete** (//class// **[[CL:Types:symbol]]**//) ====Arguments and Values==== * //class// - a //[[CL:Glossary:class designator]]//. ====Description==== The //[[CL:Glossary:function]]// **make-instances-obsolete** has the effect of initiating the process of updating the instances of the //[[CL:Glossary:class]]//. During updating, the generic function **[[CL:Functions:update-instance-for-redefined-class]]** will be invoked. The generic function **make-instances-obsolete** is invoked automatically by the system when **[[CL:Macros:defclass]]** has been used to redefine an existing standard class and the set of local //[[CL:Glossary:slot|slots]]// //[[CL:Glossary:accessible]]// in an instance is changed or the order of //[[CL:Glossary:slot|slots]]// in storage is changed. It can also be explicitly invoked by the user. If the second of the above //[[CL:Glossary:method|methods]]// is selected, that //[[CL:Glossary:method]]// invokes **make-instances-obsolete** on ''(find-class //class//)''. ====Examples==== None. ====Affected By==== None. ====Exceptional Situations==== None. ====See Also==== * **[[CL:Functions:update-instance-for-redefined-class|Generic Function UPDATE-INSTANCE-FOR-REDEFINED-CLASS]]** * {\secref\ClassReDef} ====Notes==== None.