_ = new(f1 /* ERROR "not a type" */ ())
}

func panic1() {
	panic() // ERROR "not enough arguments"
	panic(1, 2) // ERROR "too many arguments"
	panic(0)
	panic("foo")
	panic(false)
	panic(1<<10)
	panic(1 << /* ERROR "constant shift overflow" */ 1000)
	_ = panic /* ERROR "used as value" */ (0)

	var s []byte
	panic(s)
	panic(s... /* ERROR "invalid use of ..." */ )
}

func panic2() {

		if !yield(id, value) {
			return false
		}
	}
	return true
}

// mustGet returns the E for id or panics if it fails.
//
// This should only be used if id has already been validated.
func (d *dataTable[EI, E]) mustGet(id EI) E {
	data, ok := d.get(id)
	if !ok {
		panic(fmt.Sprintf("expected id %d in %T table", id, data))
	}
	return data
}

// frequency is nanoseconds per timestamp unit.

// or whether the type arguments satisfy their constraints. Instantiate is
// guaranteed to not return an error, but may panic. Specifically, for
// *Signature types, Instantiate will panic immediately if the type argument
// count is incorrect; for *Named types, a panic may occur later inside the
// *Named API.
func Instantiate(ctxt *Context, orig Type, targs []Type, validate bool) (Type, error) {
	assert(len(targs) > 0)

	}{
		{
			"direct func call panics",
			"{{doPanic}}", (*T)(nil),
			`template: t:1:2: executing "t" at <doPanic>: error calling doPanic: custom panic string`,
		},
		{
			"indirect func call panics",
			"{{call doPanic}}", (*T)(nil),
			`template: t:1:7: executing "t" at <doPanic>: error calling doPanic: custom panic string`,
		},
		{
			"direct method call panics",
			"{{.GetU}}", (*T)(nil),

// or whether the type arguments satisfy their constraints. Instantiate is
// guaranteed to not return an error, but may panic. Specifically, for
// *Signature types, Instantiate will panic immediately if the type argument
// count is incorrect; for *Named types, a panic may occur later inside the
// *Named API.
func Instantiate(ctxt *Context, orig Type, targs []Type, validate bool) (Type, error) {
	assert(len(targs) > 0)

	for name, fn := range in {
		if !goodName(name) {
			panic(fmt.Errorf("function name %q is not a valid identifier", name))
		}
		v := reflect.ValueOf(fn)
		if v.Kind() != reflect.Func {
			panic("value for " + name + " not a function")
		}
		if err := goodFunc(name, v.Type()); err != nil {
			panic(err)
		}
		out[name] = v
	}
}

// If a profile with that name already exists, NewProfile panics.
// The convention is to use a 'import/path.' prefix to create
// separate name spaces for each package.
// For compatibility with various tools that read pprof data,
// profile names should not contain spaces.
func NewProfile(name string) *Profile {
	lockProfiles()
	defer unlockProfiles()
	if name == "" {
		panic("pprof: NewProfile with empty name")
	}

// MustDeref returns the type of the variable pointed to by t.
// It panics if t's core type is not a pointer.
//
// TODO(adonovan): ideally this would live in typesinternal, but that
// creates an import cycle. Move there when we melt this package down.
func MustDeref(t types.Type) types.Type {
	if ptr, ok := CoreType(t).(*types.Pointer); ok {
		return ptr.Elem()
	}
	panic(fmt.Sprintf("%v is not a pointer", t))

// It ignores any alternative positions set using [File.AddLineColumnInfo].
// LineStart panics if the 1-based line number is invalid.
func (f *File) LineStart(line int) Pos {
	if line < 1 {
		panic(fmt.Sprintf("invalid line number %d (should be >= 1)", line))
	}
	f.mutex.Lock()
	defer f.mutex.Unlock()
	if line > len(f.lines) {
		panic(fmt.Sprintf("invalid line number %d (should be < %d)", line, len(f.lines)))
	}

	Err error // Original error.
}

func (s *state) writeError(err error) {
	panic(writeError{
		Err: err,
	})
}

// errRecover is the handler that turns panics into returns from the top
// level of Parse.
func errRecover(errp *error) {
	e := recover()
	if e != nil {
		switch err := e.(type) {
		case runtime.Error:
			panic(e)
		case writeError:
			*errp = err.Err // Strip the wrapper.