bug#66136: 29.1; byte-compiler reports "misplaced interactive spec" with empty fct in lexical environment

[Stefan Monnier]

> - `declare` is only allowed in named definitions because it is
> macro-expanded very early, so we have no way of annotating lambda
> expressions

It's not because of timing, it's because these `declare` all store their
info on the symbol (and some of them even fundamentally really apply to
the name and wouldn't make sense when applied to an anonymous function,
e.g. obsolescence).


        Stefan