Fatal Error

Fatal error is an error which causes a program to stop processing & abort completly.It returns you to the operating system. During the event the data used by the program is lost. A fatal error occurs typically in any of these cases:

* An illegal instruction has been attempted
* Invalid data or code has been accessed
* The privilege level of an operation is invalid
* A program attempts to divide by zero. (Only for integers; with the IEEE floating point standard, this creates an infinity instead)

In some systems, such as Mac OS X, a fatal error causes the operating system to create a log entry or to save an image (core dump) of the process.