go/src/os/signal/signal_cgo_test.go

const ptyFD …

const controlFD …

// TestTerminalSignal tests that read from a pseudo-terminal does not return an
// error if the process is SIGSTOP'd and put in the background during the read.
//
// This test simulates stopping a Go process running in a shell with ^Z and
// then resuming with `fg`.
//
// This is a regression test for https://go.dev/issue/22838. On Darwin, PTY
// reads return EINTR when this occurs, and Go should automatically retry.
func TestTerminalSignal(t *testing.T) { … }

// GO_TEST_TERMINAL_SIGNALS=1 subprocess above.
func runSessionLeader(t *testing.T, pause time.Duration) { … }

// GO_TEST_TERMINAL_SIGNALS=2 subprocess above.
func runStoppingChild() { … }