Segmentation fault
Computer fault caused by access to restricted memory
Computer fault caused by access to restricted memory
In computing, a segmentation fault (often shortened to segfault) or access violation is a failure condition raised by hardware with memory protection, notifying an operating system (OS) that the software has attempted to access a restricted area of memory (a memory access violation). On standard x86 computers, this is a form of general protection fault. The operating system kernel will, in response, usually perform some corrective action, generally passing the fault on to the offending process by sending the process a signal. Processes can in some cases install a custom signal handler, allowing them to recover on their own, but otherwise the OS default signal handler is used, generally causing abnormal termination of the process (a program crash), and sometimes a core dump. Segmentation faults are a common class of error in programs written in languages that support pointers that can be null, or that can be set to an arbitrary value, or that support arrays, and in which few to no memory...
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