cerr and NULL terminates program + string::find() weird results

[Benjamin Kosnik]

This problem was discussed last year. It was determined that, on
balance, setting badbit is the most consistent way of dealing with null
pointer errors in for output (specified in other inserters, like streambuf*). 

I stand by that decision. I think it's wise.

See:
27.6.2.5.3 - basic_ostream::operator<< [lib.ostream.inserters]


-benjamin