Re: Errors when typdef'ing hash_map::iterator

["Jonathan Wakely" <jwakely dot gcc at gmail dot com>]

On 18/04/07, Matt Fischer <mattfischer84@gmail.com> wrote:
> >
> Ah, I was wondering if this might not be the case.  So the fact that
> std::map works with incomplete types is really an example of undefined
> behavior, and presumably the code I'm porting is written that way
> because in VC++'s library implementation that just so happens to be
> true for hash_map as well.  Thank you for your help.

That's right - no diagnostic is required.  Presumably hash_map does
something internally that needs a complete type, so a diagnostic
happens to be given, where map doesn't (unless you turn concept-checks
on)

Jon