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The GNU C Library

23. Non-Local Exits

Sometimes when your program detects an unusual situation inside a deeply nested set of function calls, you would like to be able to immediately return to an outer level of control. This section describes how you can do such non-local exits using the setjmp and longjmp functions.

23.1 Introduction to Non-Local Exits		When and how to use these facilities.
23.2 Details of Non-Local Exits		Functions for non-local exits.
23.3 Non-Local Exits and Signals		Portability issues.
23.4 Complete Context Control		Complete context control a la System V.