}
		pieces = append(pieces, c)
	}
	return strings.Join(pieces, "")
}

func (f *File) validateIdents(x interface{}, context astContext) {
	if x, ok := x.(*ast.Ident); ok {
		if f.isMangledName(x.Name) {
			error_(x.Pos(), "identifier %q may conflict with identifiers generated by cgo", x.Name)
		}
	}
}

// Save various references we are going to need later.