Non-Local Exits

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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.

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• Intro :: When and how to use these facilities.
• Details :: Functions for non-local exits.
• Non-Local Exits and Signals :: Portability issues.
• System V contexts :: Complete context control a la System V.