Handling Uncaught and Unexpected Exceptions (C++)
Go Up to Standard C++ Exception Handling
If an exception is thrown and no exception handler is found—that is, the exception is not caught—the program calls a termination function. You can specify your own termination function with set_terminate. If you do not specify a termination function, the terminate function is called. For example, the following code uses the my_terminate function to handle exceptions not caught by any handler.
void SetFieldValue(DF *dataField, int userValue) {
if ((userValue < 0) || (userValue) > 10))
throw EIntegerRange(0, 10, userValue);
// ...
}
void my_terminate() {
printf("Exception not caught");
abort();
}
// Set my_terminate() as the termination function
set_terminate(my_terminate);
// Call SetFieldValue. This generates an exception because the user value is greater
// than 10. Because the call is not in a try block, my_terminate is called.
SetFieldValue(DF, 11);
If a function specifies which exceptions it throws and it throws an unspecified exception, an unexpected function is called. You can specify your own unexpected function with set_unexpected. If you do not specify an unexpected function, the unexpected function is called.