Test of failure to inline because callee references a
package-level decl that is shadowed by caller.

Observe that the first call to f can be inlined because
the shadowing has not yet occurred; but the second call
to f is within the scope of the local constant v.

-- go.mod --
module testdata
go 1.12

-- a/a.go --
package a

func _() {
	f() //@ inline(re"f", result)
	const v = 1
	f() //@ inline(re"f", re"v.*shadowed.*by.*const .line 5")
}

func f() int { return v }

var v int

-- result --
package a

func _() {
	_ = v //@ inline(re"f", result)
	const v = 1
	f() //@ inline(re"f", re"v.*shadowed.*by.*const .line 5")
}

func f() int { return v }

var v int