Re: PostgreSQL 9.5 operator precedence

Hello,
I've got a question about operator precedence is version 9.5

Versions lower than 9.5 worked well with constructions like
    select a is null = b is null
(it calculates if a is null, then if b is null and then compare two booleans)

But now everything is changed, and official 9.5 documentations says that
IS operator has lower precedence than = operator

The thing I don't understand is the error message that I receive:

    select 1 is null = 2 is null;
    -----------------------------
    ERROR:  operator does not exist: boolean = integer
    LINE 1: select 1 is null = 2 is null
                             ^
    HINT:  No operator matches the given name and argument type(s). You might need to add explicit type casts.