[Bug c++/57531] lvalue required with comma operator

[vijunag at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57531

--- Comment #5 from vijay Nag <vijunag at gmail dot com> ---
(In reply to Andrew Pinski from comment #4)
> I think the problem is the comma operator causes it to be a rvalue.  In that
> ((void)0, x) is considered rvalue rather than what you want as a lvalue.
> 
> Note C does not have ?: as lvalues so this cannot apply to C; only C++.

Why did it work with gcc-3.3.6 ? Any revisions in standard ?