core dump

[lipune]

Hi
what is core dump and segmentation fault.in which condition these two are found.whats the method to solve this problem in UNIX or Linux environment. Thanks

[jsmith]

segfault occurs when you attempt to access a memory address that is not mapped into your process' virtual memory space. It is a signal that is delivered by the kernel to your process. When your process receives this signal, the default action (unless you override it explicitly) is to dump core.

A core dump is a complete dump of your process' virtual address space to disk file, along with the CPU registers at the time of the fault.