const _SIGSEGV = 0xb

func sigpanic() {
	gp := getg()
	if !canpanic() {
		throw("unexpected signal during runtime execution")
	}

	// js only invokes the exception handler for memory faults.
	gp.sig = _SIGSEGV
	panicmem()
}

// func exitThread(wait *uint32)
// FIXME: wasm doesn't have atomic yet
func exitThread(wait *atomic.Uint32)

type mOS struct{}

func osyield()

//go:nosplit
func osyield_no_g() {

	got := make([]string, 0, len(want))
	for _, pc := range pcs {
		fn := runtime.FuncForPC(pc)
		if fn == nil || len(got) >= len(want) {
			break
		}
		name := fn.Name()
		switch name {
		case "runtime.panicmem":
			// These functions are skipped as they appear inconsistently depending
			// whether inlining is on or off.
			continue
		}
		got = append(got, name)
	}
	if !slices.Equal(want, got) {

#else
	thread_state.ts_32.__r[1] = thread_state.ts_32.__lr;
	thread_state.ts_32.__r[2] = thread_state.ts_32.__pc;
	thread_state.ts_32.__pc = x_cgo_panicmem;
#endif

	if (0) {
		// Useful debugging logic when panicmem is broken.
		//
		// Sends the first SIGSEGV and lets lldb catch the
		// second one, avoiding a loop that locks up iOS
		// devices requiring a hard reboot.
		fprintf(stderr, "runtime/cgo: caught exc_bad_access\n");

)

func TestPropogatingPanic(t *testing.T) {
	var buf bytes.Buffer
	klog.SetOutput(&buf)
	klog.LogToStderr(false)
	defer klog.LogToStderr(true)

	panicMsg := "panic as designed"
	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		panic(panicMsg)
	})
	resolver := &request.RequestInfoFactory{
		APIPrefixes:          sets.NewString("api", "apis"),
		GrouplessAPIPrefixes: sets.NewString("api"),
	}

	RF_PANIC                          // body of loop is either currently running, or has panicked
	RF_EXHAUSTED                      // iterator function return, i.e., sequence is "exhausted"
	RF_MISSING_PANIC = 4              // body of loop panicked but iterator function defer-recovered it away

# Regression test for https://go.dev/issue/58767:
# with an empty go.work file in GOPATH mode, calls to load.defaultGODEBUG for a
# package named "main" panicked in modload.MainModules.GoVersion.

env GO111MODULE=off
cd example
go list example/m

-- example/go.work --
go 1.21
-- example/m/main.go --
package main

// recovered is the result of invoking recover after running the test, in case it panicked.
//
// If stdout doesn't match the expected output or if recovered is non-nil, it'll print the cause of failure to stdout.
// If the test is chatty/verbose, it'll print a success message to stdout.
// If recovered is non-nil, it'll panic with that value.
// If the test panicked with nil, or invoked runtime.Goexit, it'll be

	// underlying function is only called once.
	for _, label := range []string{"first time", "second time"} {
		var p any
		panicked := true
		func() {
			defer func() {
				p = recover()
			}()
			f()
			panicked = false
		}()
		if !panicked {
			t.Fatalf("%s: f did not panic", label)
		}
		check(label, p)
	}
	if *calls != 1 {
		t.Errorf("want calls==1, got %d", *calls)
	}
}

	if err == nil {
		log.Fatalf("expected cmd/link to fail")
	}

	firstLine := string(bytes.SplitN(out, []byte("\n"), 2)[0])
	if strings.HasPrefix(firstLine, "panic") {
		log.Fatalf("cmd/link panicked:\n%s", out)
	}

	if !strings.Contains(firstLine, message) {
		log.Fatalf("cmd/link output did not include expected message %q: %s", message, firstLine)
	}

	}

	if f, err := c.File(); err != nil {
		condFatalf(t, "file+net", "%v", err)
	} else {
		f.Close()
	}

	defer func() {
		if p := recover(); p != nil {
			t.Fatalf("panicked: %v", p)
		}
	}()

	c.WriteToUDP(wb, nil)
	c.WriteMsgUDP(wb, nil, nil)
}

func TestIPConnSpecificMethods(t *testing.T) {
	if !testableNetwork("ip4") {
		t.Skip("skipping: ip4 not supported")