abort(3)
NAME
abort − generate a fault
DESCRIPTION
The abort subroutine executes an instruction which is illegal in user mode. This causes a signal that normally terminates the process with a core dump, which may be used for debugging.
ENVIRONMENT
When your program is compiled using the System V environment, abort closes open files before aborting.
RESTRICTIONS
The abort function does not flush standard I/O buffers. Use fflush(3s), see fclose(3s).
DIAGNOSTICS
Usually ‘Illegal instruction − core dumped’ from the Bourne shell;