Prevent macro expansion of mblen

[Jason Merrill]

>>>>> "Gabriel" == Gabriel Dos Reis <gdr@codesourcery.com> writes:

> OK, I understand now you meant.  One problem is that those out-of-line
> definitions are not always existent -- that is what prompt Alexandre's
> patch in the first place.

Really?  Looking back, I see

>>>>> "Alexandre" == Alexandre Oliva <aoliva@redhat.com> writes:

> ...
> (mblen is available as a function, despite the existence of the macro).

Are there any targets for which this is actually the case?

Jason