# SIGPIPE

When a Go program writes to a broken pipe, the kernel will raise a
SIGPIPE signal.

If the program has not called Notify to receive SIGPIPE signals, then
the behavior depends on the file descriptor number. A write to a
broken pipe on file descriptors 1 or 2 (standard output or standard
error) will cause the program to exit with a SIGPIPE signal. A write

	{8, "SIGFPE", "floating point exception"},
	{9, "SIGKILL", "killed"},
	{10, "SIGUSR1", "user defined signal 1"},
	{11, "SIGSEGV", "segmentation fault"},
	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},

	{8, "SIGFPE", "floating point exception"},
	{9, "SIGKILL", "killed"},
	{10, "SIGUSR1", "user defined signal 1"},
	{11, "SIGSEGV", "segmentation fault"},
	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},

	{8, "SIGFPE", "floating point exception"},
	{9, "SIGKILL", "killed"},
	{10, "SIGUSR1", "user defined signal 1"},
	{11, "SIGSEGV", "segmentation fault"},
	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},

			// going to send to the process (via Signal or Kill above): if we send
			// SIGKILL to the process, we would prefer for it to die of SIGKILL, not
			// SIGPIPE. (However, this may still cause any orphaned subprocesses to
			// terminate with SIGPIPE.)
			closeDescriptors(c.parentIOPipes)
			// Wait for the copying goroutines to finish, but report ErrWaitDelay for

	SIGFPE  = syscall.Signal(0x8)
	SIGHUP  = syscall.Signal(0x1)
	SIGILL  = syscall.Signal(0x4)
	SIGINT  = syscall.Signal(0x2)
	SIGIOT  = syscall.Signal(0x6)
	SIGKILL = syscall.Signal(0x9)
	SIGPIPE = syscall.Signal(0xd)
	SIGQUIT = syscall.Signal(0x3)
	SIGSEGV = syscall.Signal(0xb)
	SIGTERM = syscall.Signal(0xf)
	SIGTRAP = syscall.Signal(0x5)

		// This test should kill the child process after 10ms,
		// leaving a grandchild process writing probes in a loop.
		// The child process should be reported as failed,
		// and the grandchild will exit (or die by SIGPIPE) once the
		// stderr pipe is closed.
		if ee := new(*exec.ExitError); !errors.As(err, ee) {
			t.Errorf("Wait error = %v; want %T", err, *ee)
		}
	})