SIGABRT signal in Linux

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SIGABRT is to abortProgramIt can be captured, but cannot be blocked. After the processing function returns, all opened file descriptors will be closed and the stream will be flushed. The program will end and core dump will be performed if possible. When the program calls abort (3), the process sends a SIGABRT signal to itself. Therefore, SIGABRT is generally used for some key processing of signals. It is also used when assert fails. You should not capture SIGSEGV and SIGABRT signals. If such signals are received, the process is in an uncertain state and may be suspended directly.