In computing, a fatal error or fatal exception error is an error that causes a program to abort and may therefore return the user to the operating system. When this happens, data that the program was processing may be lost. A fatal error is usually distinguished from a fatal system error (colloquially referred to by the error message it produces as a "blue screen of death"). A fatal error occurs typically in any of the following cases:
- An illegal instruction has been attempted
- Invalid data or code has been accessed
- An operation is not allowed in the current ring or CPU mode
- 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 and Microsoft Windows, a fatal error causes the operating system to create a log entry or to save an image (core dump) of the process.
Famous quotes containing the words fatal and/or error:
“The first day that we landed upon that fatal shore
The planters they came round us full twenty score or more,
They rank’d us up like horses, and sold us out of hand
Then yok’d us unto ploughs, my boys, to plow Van
Dieman’s Land.”
—Unknown. Van Dieman’s Land (l. 9–12)
“Children, then, acquire social skills not so much from adults as from their interactions with one another. They are likely to discover through trial and error which strategies work and which do not, and later to reflect consciously on what they have learned.”
—Zick Rubin (20th century)