1.官网解释:
access violation
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There are four types of access violations. An access violation occurs if you attempt:
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An invalid operation, such as writing to a read-only page.
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To access memory beyond the limit of the current program's address space (known as a length violation).
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To access a page to which the system forbids access. For example, code is not allowed to run in the low-order 64K of the system's user-mode address space in order to simplify the detection of NULL pointer references.
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To access a page that is currently resident but dedicated to the use of a system component. For example, user-mode code is not allowed access a page that the kernel is using.
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