The error handler module defines what happens when certain types of errors occur.
undefined_function(Module, Func, ArgList) -> term()
Module = Func = atom()
ArgList = [term()]
This function is evaluated if a call is made to
Module:Func(ArgList) which is undefined. This function
is evaluated inside the process making the original call.
Module is interpreted, the interpreter is invoked
and the return value of the interpreted
call is returned.
Otherwise, it returns, if possible, the value of
apply(Module, Func, ArgList) after an attempt has been
made to autoload
Module. If this is not possible, the
Module:Func(ArgList) is exited.
The code in
error_handler is complex and should not be
changed without fully understanding the interaction between the
error handler, the
init process of the code server, and the
I/O mechanism of the code.
Changes in the code which may seem small can cause a deadlock
as unforeseen consequences may occur. The use of
dangerous in this type of code.