Dangling Pointer N. [common] A Reference That Doesn't Actually Lead Anywhere (in C And Some Other Languages, A Pointer That Doesn't Actually Point At Anything Valid).

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dangling pointer n.

[common] A reference that doesn't
actually lead anywhere (in C and some other languages, a pointer
that doesn't actually point at anything valid). Usually this
happens because it formerly pointed to something that has moved or
disappeared. Used as jargon in a generalization of its techspeak
meaning; for example, a local phone number for a person who has
since moved to the other coast is a dangling pointer. Compare
dead link.

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