streambuf performance 200x

[Martin Sebor]

Nathan Myers wrote:
...
> 
> My reading of D.7.* is that freezing the buffer does not cause 
> sputc calls to fail in any case.  I think all the text describing
> streambuf derivatives was composed carefully on the assumption
> that sputc must be implementable as described above.

What about D.7.1, p2, bullet 4:

     frozen, set when the program has requested that the array object
     not be altered, reallocated, or freed.
     ^^^^^^^^^^^^^^

Despite this, though, the Classic Iostream implementation on both
HP-UX and SunOS allows frozen buffers to be altered via calls to
sputc(). Is the text in D.7.1, p2 wrong or am I missing something?

Martin