#include <stdlib.h>
The abort() function causes abnormal process termination to occur, unless the signal SIGABRT is being caught and the signal handler does not return. The abnormal termination processing includes at least the effect of fclose(3C) on all open streams and message catalogue descriptors, and the default actions defined for SIGABRT. The SIGABRT signal is sent to the calling process as if by means of the raise(3C) function with the argument SIGABRT.
The status made available to wait(3C) or waitpid(3C) by abort will be that of a process terminated by the SIGABRT signal. abort will override blocking or ignoring the SIGABRT signal.
The abort() function does not return.
Catching the signal is intended to provide the application writer with a portable means to abort processing, free from possible interference from any implementation-provided library functions. If SIGABRT is neither caught nor ignored, and the current directory is writable, a core dump may be produced.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Standard |
| MT-Level | Safe |
exit(2), getrlimit(2), kill(2), fclose(3C), raise(3C), signal(3C), wait(3C), waitpid(3C), attributes(5), standards(5)