}
}

// Test that g0 stack overflows are handled gracefully.
func TestG0StackOverflow(t *testing.T) {
	testenv.MustHaveExec(t)

	if runtime.GOOS == "ios" {
		testenv.SkipFlaky(t, 62671)
	}

	if os.Getenv("TEST_G0_STACK_OVERFLOW") != "1" {
		cmd := testenv.CleanCmdEnv(testenv.Command(t, os.Args[0], "-test.run=^TestG0StackOverflow$", "-test.v"))
		cmd.Env = append(cmd.Env, "TEST_G0_STACK_OVERFLOW=1")

	// and end up in sigtrampgo again.
	// TODO: revisit this workaround if/when closures
	// can be compiled as nosplit.
	//
	// Note that this scenario should only occur on
	// TestG0StackOverflow. Any other occurrence should
	// be treated as a bug.
	var ret int32
	if gp != gp.m.g0 {
		systemstack(func() {
			ret = fn(ep.record, ep.context, gp)
		})
	} else {