0x78, 0x74, 0x50, 0x4b, 0x05, 0x06, 0x00, 0x00,
		0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x39, 0x00,
		0x00, 0x00, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00,
	}

	// Read in the archive with the OpenReader interface
	name := filepath.Join(t.TempDir(), "test.zip")
	err := os.WriteFile(name, data, 0644)
	if err != nil {
		t.Fatalf("Unable to write out the bugos zip entry")
	}
	r, err := OpenReader(name)

// If addPosition is true, add position info to the idents of C names in arg.
func (p *Package) mangle(f *File, arg *ast.Expr, addPosition bool) (ast.Expr, bool) {
	needsUnsafe := false
	f.walk(arg, ctxExpr, func(f *File, arg interface{}, context astContext) {
		px, ok := arg.(*ast.Expr)
		if !ok {
			return
		}
		sel, ok := (*px).(*ast.SelectorExpr)
		if ok {
			if l, ok := sel.X.(*ast.Ident); !ok || l.Name != "C" {
				return