return &workerClient{workerComm: comm, m: m}
}

// Close shuts down the connection to the RPC server (the worker process) by
// closing fuzz_in. Close drains fuzz_out (avoiding a SIGPIPE in the worker),
// and closes it after the worker process closes the other end.
func (wc *workerClient) Close() error {
	wc.mu.Lock()
	defer wc.mu.Unlock()

	SIGINT  = Signal(0x2)
	SIGQUIT = Signal(0x3)
	SIGILL  = Signal(0x4)
	SIGTRAP = Signal(0x5)
	SIGABRT = Signal(0x6)
	SIGBUS  = Signal(0x7)
	SIGFPE  = Signal(0x8)
	SIGKILL = Signal(0x9)
	SIGSEGV = Signal(0xb)
	SIGPIPE = Signal(0xd)
	SIGALRM = Signal(0xe)
	SIGTERM = Signal(0xf)
)

var signals = [...]string{
	1:  "hangup",
	2:  "interrupt",
	3:  "quit",
	4:  "illegal instruction",
	5:  "trace/breakpoint trap",

	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)
		}
	})

		{"SIGINFO", Const, 0},
		{"SIGINT", Const, 0},
		{"SIGIO", Const, 0},
		{"SIGIOT", Const, 0},
		{"SIGKILL", Const, 0},
		{"SIGLIBRT", Const, 1},
		{"SIGLWP", Const, 0},
		{"SIGPIPE", Const, 0},
		{"SIGPOLL", Const, 0},
		{"SIGPROF", Const, 0},
		{"SIGPWR", Const, 0},
		{"SIGQUIT", Const, 0},
		{"SIGSEGV", Const, 0},
		{"SIGSTKFLT", Const, 0},
		{"SIGSTOP", Const, 0},

pkg syscall, const SIGFPE Signal
pkg syscall, const SIGHUP Signal
pkg syscall, const SIGILL Signal
pkg syscall, const SIGINT Signal
pkg syscall, const SIGKILL Signal
pkg syscall, const SIGPIPE Signal
pkg syscall, const SIGQUIT Signal
pkg syscall, const SIGSEGV Signal
pkg syscall, const SIGTERM Signal
pkg syscall, const SIGTRAP Signal
pkg syscall, const SOCK_DGRAM ideal-int

pkg syscall, const SIGALRM = 14
pkg syscall, const SIGFPE = 8
pkg syscall, const SIGHUP = 1
pkg syscall, const SIGILL = 4
pkg syscall, const SIGINT = 2
pkg syscall, const SIGKILL = 9
pkg syscall, const SIGPIPE = 13
pkg syscall, const SIGQUIT = 3
pkg syscall, const SIGSEGV = 11
pkg syscall, const SIGTERM = 15
pkg syscall, const SIGTRAP = 5
pkg syscall, const SOCK_DGRAM = 2
pkg syscall, const SOCK_RAW = 3