The linked problem goes far past the result object being unstable though - namely, with it you can affect any string in any class file that the JVM loads in the

The linked problem goes far past the result object being unstable though - namely, with it you can affect any string in any class file that the JVM loads in the future. That is, you can get yourself into a situation where the following function returns false: boolean foo() { System.out.println("hello world".startsWith("hello")); }