std_sstream.h (str()): Revert the best of the previous 'improvement'...

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

	* include/std/std_sstream.h (str()): Revert the best of the
	previous 'improvement', incorrect due to the COW nature of
	v3 basic_string; simplify.

From-SVN: r66357

libstdc++-v3/ChangeLog

 2003-05-01  Paolo Carlini  <pcarlini@unitus.it>
 
+	* include/std/std_sstream.h (str()): Revert the best of the
+	previous 'improvement', incorrect due to the COW nature of
+	v3 basic_string; simplify.
+
+2003-05-01  Paolo Carlini  <pcarlini@unitus.it>
+
 	* include/bits/streambuf.tcc (__copy_streambufs): Adjust the
 	type of __avail to ptrdiff_t to avoid signed-unsigned warning.
 

libstdc++-v3/include/std/std_sstream.h

@@ -136,14 +136,9 @@ namespace std
 	__string_type __ret = _M_string;
 	if (this->_M_mode & ios_base::out)
 	  {
-	    // This is the deal: _M_string.size() is a value that
-	    // represents the size of the initial string used to
-	    // created the buffer, and may not be the correct size of
-	    // the current stringbuf internal buffer.
-	    const __size_type __len = _M_string.size();
 	    const __size_type __nlen = this->_M_out_lim
-	                               - this->_M_out_beg;
-	    if (__nlen > __len)
+                                       - this->_M_out_beg;
+	    if (__nlen)
 	      __ret = __string_type(this->_M_out_beg, 
 				    this->_M_out_beg + __nlen);
 	  }