re PR libstdc++/16251 (bogus default constructor for std::basic_iostream)

re PR libstdc++/16251 (bogus default constructor for std::basic_iostream)

2008-02-10  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/16251
	* include/std/istream (basic_istream<>::basic_istream()): Call
	this->init().
	(basic_iostream<>::basic_iostream(basic_streambuf<>*)): Don't
	do it here, per 27.6.1.5.1/1.
	* include/std/ostream (basic_ostream<>::basic_ostream()): Call
	this->init().
	* testsuite/27_io/basic_iostream/cons/16251.C: New.

	* testsuite/27_io/basic_iostream/cons/2020.cc: Minor tweaks.

From-SVN: r132214