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// run
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 26248: gccgo miscompiles interface field expression.
// In G().M where G returns an interface, G() is evaluated twice.
package main
type I interface {
M()
}
type T struct{}
func (T) M() {}
var g = 0
//go:noinline
func G() I {
g++
return T{}
}
//go:noinline
func Use(interface{}) {}
func main() {
x := G().M
Use(x)
if g != 1 {
println("want 1, got", g)
panic("FAIL")
}
}