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stale pointer bug
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programming (Or "aliasing bug") A class of subtle
programming errors that can arise in code that does dynamicallocation, especially via malloc or equivalent.
If several pointers address (are "aliases for") a given hunk
of storage, it may happen that the storage is freed or
reallocated (and thus moved) through one alias and then
referenced through another, which may lead to subtle (and
possibly intermittent) lossage depending on the state and the
allocation history of the malloc arena. This bug can be
avoided by never creating aliases for allocated memory, or by
use of a higher-level language, such as Lisp, which