Re: [PATCH] lib/rename.c: Conditionally define the out label

[Paul Eggert]

Pádraig Brady wrote:
> Well the ; is needed in C++ but optional in C.
> I was worried about users leaving out the ; by mistake
> and not noticing in the normal case of compiling in C.

But then the other case should be "# define _GL_UNUSED_LABEL ;", no? 
Otherwise a semicolon would be appended sometimes but not others, which 
cannot be right.

My experience is that macros whose expansion ends in ";" tend to cause 
confusion, so I'd rather omit the ";" in both cases.  But if it's going 
to be added in the "if" it should also be added in the "else".