1 files changed, 69 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/9988.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/9988.cc
new file mode 100644
index 00000000000..2c8d078f0e4
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/9988.cc
@@ -0,0 +1,69 @@
+// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
+
+// Copyright (C) 2001, 2002, 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.
+
+// 27.8.1.4 Overridden virtual functions
+
+#include <fstream>
+#include <testsuite_hooks.h>
+
+const char name_08[] = "filebuf_virtuals-8.txt"; // empty file, need to create
+
+class OverBuf : public std::filebuf
+{
+public:
+  int_type pub_overflow(int_type c = traits_type::eof())
+  { return std::filebuf::overflow(c); }
+};
+
+// libstdc++/9988
+// filebuf::overflow writes EOF to file
+void test15()
+{
+  using namespace std;
+  bool test = true;
+  
+  OverBuf fb;
+  fb.open(name_08, ios_base::out | ios_base::trunc);
+  
+  fb.sputc('a');
+  fb.pub_overflow('b');
+  fb.pub_overflow();
+  fb.sputc('c');
+  fb.close();
+
+  filebuf fbin;
+  fbin.open(name_08, ios_base::in);
+  filebuf::int_type c;
+  c = fbin.sbumpc();
+  VERIFY( c == 'a' );
+  c = fbin.sbumpc();
+  VERIFY( c == 'b' );
+  c = fbin.sbumpc();
+  VERIFY( c == 'c' );
+  c = fbin.sbumpc();
+  VERIFY( c == filebuf::traits_type::eof() );
+  fbin.close();
+}
+
+main() 
+{
+  test15();
+  return 0;
+}