streambuf_iterator.h (_M_put): Set _M_failed if sputn fails.

2003-03-07  Jerry Quinn  <jlquinn@optonline.net>

	* include/bits/streambuf_iterator.h (_M_put): Set _M_failed if
	sputn fails.
	* testsuite/27_io/ostream_fail.cc: New test.

From-SVN: r63944

3 files changed, 62 insertions, 1 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 2f9b0ff..2162fc8 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,9 @@
+2003-03-07  Jerry Quinn  <jlquinn@optonline.net>
+
+	* include/bits/streambuf_iterator.h (_M_put): Set _M_failed if
+	sputn fails.
+	* testsuite/27_io/ostream_fail.cc: New test.
+
 2003-03-07  Matthias Klose  <doko@debian.org>
 
 	* Makefile.am (AM_MAKEFLAGS): Also pass gxx_include_dir.
diff --git a/libstdc++-v3/include/bits/streambuf_iterator.h b/libstdc++-v3/include/bits/streambuf_iterator.h
index c2dee88..95def0b 100644
--- a/libstdc++-v3/include/bits/streambuf_iterator.h
+++ b/libstdc++-v3/include/bits/streambuf_iterator.h
@@ -202,7 +202,9 @@ namespace std
       ostreambuf_iterator& 
       _M_put(const _CharT* __ws, streamsize __len)
       {
-	this->_M_sbuf->sputn(__ws, __len);
+	if (__builtin_expect(!_M_failed, true)
+	    && __builtin_expect(this->_M_sbuf->sputn(__ws, __len) != __len, false))
+	  _M_failed = true;
 	return *this;
       }
     };
diff --git a/libstdc++-v3/testsuite/27_io/ostream_fail.cc b/libstdc++-v3/testsuite/27_io/ostream_fail.cc
new file mode 100644
index 0000000..77b29ea
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/ostream_fail.cc
@@ -0,0 +1,53 @@
+// 2003-02-24 Petur Runolfsson <peturr02 at ru dot is>
+
+// Copyright (C) 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+#include <ostream>
+#include <streambuf>
+#include <testsuite_hooks.h>
+
+// libstdc++/9827
+class Buf : public std::streambuf
+{
+};
+
+bool test01()
+{
+  using namespace std;
+  bool test = true;
+
+  Buf buf;
+  ostream stream (&buf);
+
+  stream << 1;
+  VERIFY(!stream.good());
+
+#ifdef DEBUG_ASSERT
+  assert(test);
+#endif
+
+  return test;
+}
+
+
+int main()
+{
+  test01();
+  return 0;
+}