Test of inlining a function that references an
internal package that is not accessible to the caller.

(c -> b -> b/internal/a)

-- go.mod --
module testdata
go 1.12

-- b/internal/a/a.go --
package a

func A() {}

-- b/b.go --
package b

import "testdata/b/internal/a"

func B() { a.A() }

-- c/c.go --
package c

import "testdata/b"

func _() {
	b.B() //@ inline(re"B", re`body refers to inaccessible package "testdata/b/internal/a"`)
}