Where in the JLS is the explanation for it to be legal the assignment of a raw type to an unbounded type?

Question

I'm looking for a JLS quote for the following sentence to be legal:

Vector<?> vector = PreJava5API.getRawVector();

Answer 1

You can start from the section about assignment

https://docs.oracle.com/javase/specs/jls/se8/html/jls-15.html#jls-15.26.1

which allows assignment conversion

https://docs.oracle.com/javase/specs/jls/se8/html/jls-5.html#jls-5.2

which allows unchecked conversion

https://docs.oracle.com/javase/specs/jls/se8/html/jls-5.html#jls-5.1.9

which allows conversion from raw G to G<?>, without a warning.