NAME

error_handling - how to error handling works inside Pike

DESCRIPTION

Error handling in Pike is implemented with the setjmp/longjmp functionality. This means that functions that can cause errors will NOT return if an error occurs. Special care has to be taken so that no memory is left unfreed if an error occurs. Almost all functions that can cause Pike code to be executed can cause an error. Also functions that implements Pike operators / functions can cause errors. If you are paranoid you should assume that all functions can cause errors. You may also read the code for the function to see if there are any calls to error() in it. If the function is documented in this manual, it will say if the function can cause errors.

KEYWORDS

internals

RELATED PAGES

• SETJMP - catch errors
• SET_ONERROR - call this function if an error occurs
• UNSETJMP - stop catching error
• UNSET_ONERROR - cleanup after an SET_ONERROR
• error - throw an error
• fatal - print a message and dump core
• throw - throw an exception