2014-04-26 10:52:28 -04:00
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aliasing bug
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2014-04-26 11:54:15 -04:00
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n. A class of subtle programming errors that can arise in code that does
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dynamic allocation, esp. via malloc (3) or equivalent. If several pointers
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address (are aliases for ) a given hunk of storage, it may happen that the
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storage is freed or reallocated (and thus moved) through one alias and then
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referenced through another, which may lead to subtle (and possibly
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intermittent) lossage depending on the state and the allocation history of
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the malloc arena. Avoidable by use of allocation strategies that never alias
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allocated core, or by use of higher-level languages, such as LISP , which
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employ a garbage collector (see GC ). Also called a stale pointer bug. See
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also precedence lossage , smash the stack , fandango on core , memory leak ,
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memory smash , overrun screw , spam. Historical note: Though this term is
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nowadays associated with C programming, it was already in use in a very
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similar sense in the Algol-60 and FORTRAN communities in the 1960s.
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