2003-05-01 Paolo Carlini <pcarlini@unitus.it>

2003-05-01  Paolo Carlini  <pcarlini@unitus.it>

	* include/bits/streambuf.tcc (basic_streambuf::xsgetn):
	Const-ify some variables.
	(basic_streambuf::xsputn): Likewise; change the type of some
	variables to size_t.
	(__copy_streambufs): Change some variables to size_t.

2003-05-01  Paolo Carlini  <pcarlini@unitus.it>

	* include/std/std_sstream.h (str()): Avoid constructing
	a basic_string temporary not only when it would turn out
	to be zero-sized but also when identical to the current
	_M_string buffer.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@66334 138bc75d-0d04-0410-961f-82ee72b054a4