Buffer Overflow: N. What Happens When You Try To Stuff More Data Into A Buffer (holding Area) Than It Can Handle.

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:buffer overflow: n. What happens when you try to stuff more data
into a buffer (holding area) than it can handle. This may be due
to a mismatch in the processing rates of the producing and
consuming processes (see {overrun} and {firehose syndrome}),
or because the buffer is simply too small to hold all the data that
must accumulate before a piece of it can be processed. For example,
in a text-processing tool that {crunch}es a line at a time, a
short line buffer can result in {lossage} as input from a long
line overflows the buffer and trashes data beyond it. Good
defensive programming would check for overflow on each character
and stop accepting data when the buffer is full up. The term is
used of and by humans in a metaphorical sense. "What time did I
agree to meet you? My buffer must have overflowed." Or "If I
answer that phone my buffer is going to overflow." See also
{spam}, {overrun screw}.
-- The AI Hackers Dictionary