Re: Simplify internal_catch()

[Paul Eggert <eggert@cs.ucla.edu>]

Stefan Monnier wrote:
> There's a fair bit of
>
>     Lisp_Object foo;
>
>     foo = ...;
>
> around, indeed, because at some point in the past, some C compilers did
> not support "Lisp_Object foo = ..." when Lisp_Object is a union type.

Actually, that kind of code was around because C89 did not allow declarations 
after statements. Even ancient C compilers allowed union-typed expressions as 
initial values for auto variables, and "Lisp_Object foo = ..." at block start 
has been in Emacs since the beginning; it's in the very oldest code (dated 1985) 
committed in the Emacs repository.