[Bug libstdc++/46906] istreambuf_iterator is late?

[daniel.kruegler at googlemail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46906

--- Comment #8 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2011-09-05 12:56:44 UTC ---
(In reply to comment #7)
> Oh, are you saying that this rule has priority over the one that says that
> operator* just forwards to sgetc? 

This was not my intention, but I recognize that my last response can be read
that way.

> That would actually require istreambuf_iterator to keep the last value in cache the way libstdc++ does. 

This is not required, but I don't see why this should be excluded by the
specification. Why do you think that either implementation form could be
considered as non-conforming?