This test verifies that even after importing from export data, the references
algorithm is able to find all references to struct fields or methods that are
shared by types from multiple packages. See golang/go#60676.

Note that the marker test runner awaits the initial workspace load, so export
data should be populated at the time references are requested.

-- go.mod --
module mod.test

go 1.18

-- a/a.go --
package a

type A struct {
	F int //@loc(FDef, "F")
	E //@loc(EDef, "E")
}

type E struct {
	G string //@loc(GDef, "G")
}

type AI interface {
	M() //@loc(MDef, "M")
	EI
	error
}

type EI interface {
	N() //@loc(NDef, "N")
}

type T[P any] struct{ f P }

type Error error


-- b/b.go --
package b

import "mod.test/a"

type B a.A

type BI a.AI

type T a.T[int] // must not panic

-- c/c.go --
package c

import "mod.test/b"

func _() {
	x := b.B{
		F: 42, //@refs("F", FDef, "F", Fuse)
	}
	x.G = "hi" //@refs("G", GDef, "G")
	_ = x.E //@refs("E", EDef, "E")
	_ = x.F //@loc(Fuse, "F")
}

func _(y b.BI) {
	_ = y.M //@refs("M", MDef, "M")
	_ = y.N //@refs("N", NDef, "N")
}