// Check for cycles in a pointer method expression.

package ptrmethexpr

type T int

func (*T) pm() int {
	_ = x
	return 0
}

type T int

func (T) m() int {
	_ = x
	return 0
}

func g() E {
	return E{0}
}

type E struct{ T }

var (
	e E
	x = g().m() // ERROR "initialization cycle|depends upon itself" 

// Issue 3890: missing detection of init cycle involving
// method calls in function bodies.

package flag

var commandLine = NewFlagSet() // ERROR "initialization cycle|depends upon itself"

type FlagSet struct {
}

func (f *FlagSet) failf(format string, a ...interface{}) {
	f.usage()
}

func (f *FlagSet) usage() {
	if f == commandLine {
		panic(3)
	}
}

// Check for cycles in a method value.

package methvalue

type T int

func (T) m() int {
	_ = x
	return 0
}

var (
	t T
	x = t.m // ERROR "initialization cycle|depends upon itself"

// Check for cycles in a pointer literal's method value.

package ptrlitmethvalue

type T int

func (*T) pm() int {
	_ = x
	return 0
}

// Check for cycles in a pointer value's method value.

package ptrmethvalue

type T int

func (*T) pm() int {
	_ = x
	return 0
}

var (
	p *T
	x = p.pm // ERROR "initialization cycle|depends upon itself"

package embedlitmethvalue

type T int

func (T) m() int {
	_ = x
	return 0
}

type E struct{ T }

package embedmethcall

type T int

func (T) m() int {
	_ = x
	return 0
}

type E struct{ T }

var (
	e E
	x = e.m() // ERROR "initialization cycle|depends upon itself" 

package funcmethvalue

type T int

func (T) m() int {
	_ = x
	return 0
}

func f() T {
	return T(0)
}

var (
	t T
	x = f().m // ERROR "initialization cycle|depends upon itself"

// from a function call.

package funcptrmethvalue

type T int

func (*T) pm() int {
	_ = x
	return 0
}

func pf() *T {
	return nil
}