const goSource = `
package main

// #cgo LDFLAGS: TMPDIR/cbad.o TMPDIR/cbad.so
// extern int F();
import "C"

func main() {
	println(C.F())
}
`

func TestBadSymbol(t *testing.T) {
	testenv.MustHaveGoBuild(t)
	testenv.MustHaveCGO(t)

	dir := t.TempDir()

	mkdir := func(base string) string {
		ret := filepath.Join(dir, base)
		if err := os.Mkdir(ret, 0755); err != nil {