Makefile.am (target_headers): Add fpos.h

2003-07-03  Benjamin Kosnik  <bkoz@redhat.com>

	* include/Makefile.am (target_headers): Add fpos.h
	(bits_headers): Remove.
	* include/Makefile.in: Regenerate.
	* configure.in: Add FPOS_INC_SRCDIR, substitute it.
	* configure: Regenerate.
	* configure.host: Add fpos_include_dir.
	* config/os/gnu-linux/fpos.h: New.
	* config/os/generic/fpos.h: Add.
	* include/bits/fpos.h: Remove.

	* config/io/c_io_stdio.h: Remove fpos_t typedef.

	* include/bits/fstream.tcc: Tweaks.
	* include/std/std_fstream.h: Same.

	* testsuite/27_io/fpos/1.cc (test01): Uncomment. Move to...
	* testsuite/27_io/fpos/mbstate_t/1.cc: ...here.
	* testsuite/27_io/fpos/mbstate_t/2.cc: Same.
	* testsuite/27_io/fpos/mbstate_t/3.cc: Same.
	* testsuite/27_io/fpos/1.cc: New.

2003-07-03  Benjamin Kosnik  <bkoz@redhat.com>
	    Petur Runolfsson  <peturr02@ru.is>

	* include/std/std_streambuf.h: Remove _M_pos.
	* config/io/basic_file_stdio.h: Use seekpos instead of seekoff.
	* config/io/basic_file_stdio.cc: Same, use fseek instead of lseek,
	use fread/fwrite instead of read/write.
	* testsuite/27_io/basic_filebuf/showmanyc/char/9533-2.cc: Fix.
	* testsuite/27_io/basic_filebuf/sputn/char/9339.cc: Close filebufs
	before reading again.
	* testsuite/27_io/objects/char/6.cc: Tweak.

Co-Authored-By: Petur Runolfsson <peturr02@ru.is>

From-SVN: r68913

libstdc++-v3/ChangeLog

@@ -1,3 +1,38 @@
+2003-07-03  Benjamin Kosnik  <bkoz@redhat.com>
+
+	* include/Makefile.am (target_headers): Add fpos.h
+	(bits_headers): Remove.
+	* include/Makefile.in: Regenerate.
+	* configure.in: Add FPOS_INC_SRCDIR, substitute it.
+	* configure: Regenerate.
+	* configure.host: Add fpos_include_dir.
+	* config/os/gnu-linux/fpos.h: New.
+	* config/os/generic/fpos.h: Add.	
+	* include/bits/fpos.h: Remove.	
+
+	* config/io/c_io_stdio.h: Remove fpos_t typedef.
+
+	* include/bits/fstream.tcc: Tweaks.
+	* include/std/std_fstream.h: Same.
+	
+	* testsuite/27_io/fpos/1.cc (test01): Uncomment. Move to...
+	* testsuite/27_io/fpos/mbstate_t/1.cc: ...here.
+	* testsuite/27_io/fpos/mbstate_t/2.cc: Same.
+	* testsuite/27_io/fpos/mbstate_t/3.cc: Same.
+	* testsuite/27_io/fpos/1.cc: New.
+	
+2003-07-03  Benjamin Kosnik  <bkoz@redhat.com>
+	    Petur Runolfsson  <peturr02@ru.is>
+	
+	* include/std/std_streambuf.h: Remove _M_pos.
+	* config/io/basic_file_stdio.h: Use seekpos instead of seekoff.
+	* config/io/basic_file_stdio.cc: Same, use fseek instead of lseek,
+	use fread/fwrite instead of read/write.
+	* testsuite/27_io/basic_filebuf/showmanyc/char/9533-2.cc: Fix.
+	* testsuite/27_io/basic_filebuf/sputn/char/9339.cc: Close filebufs
+	before reading again.
+	* testsuite/27_io/objects/char/6.cc: Tweak.
+	
 2003-07-03  David Edelsohn  <edelsohn@gnu.org>
 
 	* testsuite/22_locale/num_put/put/char/7.cc: Guard with

libstdc++-v3/acinclude.m4

@@ -1362,7 +1362,12 @@ AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
       exit 1
       ;;
   esac
+
+  dnl Set directory for fpos.h
+  FPOS_H=$fpos_include_dir
+
   AC_SUBST(CSTDIO_H)
+  AC_SUBST(FPOS_H)
   AC_SUBST(BASIC_FILE_H)
   AC_SUBST(BASIC_FILE_CC)
 ])

libstdc++-v3/aclocal.m4

@@ -1374,7 +1374,12 @@ AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
       exit 1
       ;;
   esac
+
+  dnl Set directory for fpos.h
+  FPOS_H=$fpos_include_dir
+
   AC_SUBST(CSTDIO_H)
+  AC_SUBST(FPOS_H)
   AC_SUBST(BASIC_FILE_H)
   AC_SUBST(BASIC_FILE_CC)
 ])

libstdc++-v3/config/io/basic_file_stdio.cc

@@ -207,33 +207,33 @@ namespace std
  
   streamsize 
   __basic_file<char>::xsgetn(char* __s, streamsize __n)
-  {
+  { return fread(__s, 1, __n, _M_cfile); }
-    streamsize __ret;
-    do
-      __ret = read(this->fd(), __s, __n);
-    while (__ret == -1L && errno == EINTR);
-    return __ret;
-  }
     
   streamsize 
   __basic_file<char>::xsputn(const char* __s, streamsize __n)
-  {
+  { return fwrite(__s, 1, __n, _M_cfile); }
-    streamsize __ret;
+
-    do
+  streampos
-      __ret = write(this->fd(), __s, __n);
+  __basic_file<char>::seekoff(streamoff off, ios_base::seekdir way, 
-    while (__ret == -1L && errno == EINTR);
+			      ios_base::openmode /*__mode*/)
-    return __ret;
+  {
-  }
+    streampos ret(-1);
-  
+    fpos_t tmp;
-  streamoff
+    if (!fseek(_M_cfile, off, way) && !fgetpos(_M_cfile, &tmp))
-  __basic_file<char>::seekoff(streamoff __off, ios_base::seekdir __way, 
+      ret = tmp; 
-			      ios_base::openmode /*__mode*/)
+    return ret;
-  { return lseek(this->fd(), __off, __way); }
+  }
+
+  streampos
+  __basic_file<char>::seekpos(streampos pos, ios_base::openmode /*__mode*/)
+  {
+    streampos ret(-1);
+    fpos_t tmp = pos; 
+    if (!fsetpos(_M_cfile, &tmp) && !fgetpos(_M_cfile, &tmp))
+      ret = tmp; 
+    return ret;
+  }
 
-  streamoff
-  __basic_file<char>::seekpos(streamoff __pos, ios_base::openmode /*__mode*/)
-  { return lseek(this->fd(), __pos, ios_base::beg); }
-  
   int 
   __basic_file<char>::sync() 
   { return fflush(_M_cfile); }

libstdc++-v3/config/io/basic_file_stdio.h

@@ -99,12 +99,12 @@ namespace std
       streamsize 
       xsgetn(char* __s, streamsize __n);
 
-      streamoff
+      streampos
       seekoff(streamoff __off, ios_base::seekdir __way, 
 	      ios_base::openmode __mode = ios_base::in | ios_base::out);
 
-      streamoff
+      streampos
-      seekpos(streamoff __pos, 
+      seekpos(streampos __pos, 
 	      ios_base::openmode __mode = ios_base::in | ios_base::out);
 
       int 

libstdc++-v3/config/io/c_io_stdio.h

@@ -1,6 +1,6 @@
 // underlying io library  -*- C++ -*-
 
-// Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -38,20 +38,19 @@
 
 namespace std 
 {
-// for fpos.h
+  // for fpos.h
   typedef long  	streamoff;
   typedef ptrdiff_t	streamsize; // Signed integral type
 #if _GLIBCPP_USE_WCHAR_T
   typedef ptrdiff_t	wstreamsize;
 #endif
-  typedef fpos_t  	__c_streampos;
 
   typedef __gthread_mutex_t __c_lock;
 
-// for basic_file.h
+  // for basic_file.h
   typedef FILE __c_file;
 
-// for ios_base.h
+  // for ios_base.h
   struct __ios_flags
   {
     typedef short __int_type;
@@ -90,4 +89,4 @@ namespace std
   };
 }
 
-#endif // _CPP_IO_STDIO_H
+#endif

libstdc++-v3/config/os/generic/fpos.h

@@ -1,6 +1,7 @@
-// File position object and stream types
+// File position object and stream types, generic version -*- C++ -*-
 
-// Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 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
@@ -55,26 +56,22 @@ namespace std
   template<typename _StateT>
     class fpos
     {
-    public:
-      // Types:
-      typedef _StateT __state_type;
-
     private:
       streamoff 	_M_off;
-      __state_type 	_M_st;
+      _StateT 		_M_st;
 
     public:
-      __state_type
+      _StateT
       state() const  { return _M_st; }
 
       void 
-      state(__state_type __st)  { _M_st = __st; }
+      state(_StateT __st)  { _M_st = __st; }
+
+      fpos(): _M_off(streamoff()), _M_st(_StateT()) { }
 
       // NB: The standard defines only the implicit copy ctor and the
       // previous two members.  The rest is a "conforming extension".
-      fpos(): _M_off(streamoff()), _M_st(__state_type()) { }
+      fpos(streamoff __off, _StateT __st = _StateT())
-
-      fpos(streamoff __off, __state_type __st = __state_type())
       :  _M_off(__off), _M_st(__st) { }
 
       operator streamoff() const { return _M_off; }
@@ -107,13 +104,7 @@ namespace std
 
       bool  
       operator!=(const fpos& __pos) const
-      { return _M_off != __pos._M_off; }
+      { return !(*this == __pos); }
-
-      streamoff 
-      _M_position() const { return _M_off; }
-
-      void
-      _M_position(streamoff __off)  { _M_off = __off; }
     };
 
   /// 27.2, paragraph 10 about fpos/char_traits circularity

libstdc++-v3/config/os/gnu-linux/fpos.h

@@ -0,0 +1,144 @@
+// File position object and stream types, GNU version -*- C++ -*-
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 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.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+//
+// ISO C++ 14882: 27 Input/output library
+//
+
+/** @file fpos.h
+ *  This is an internal header file, included by other library headers.
+ *  You should not attempt to use it directly.
+ */
+
+#ifndef _CPP_BITS_FPOS_H
+#define _CPP_BITS_FPOS_H 1
+
+#pragma GCC system_header
+
+#include <bits/c++io.h>
+#include <cwchar> 	// For mbstate_t.
+
+namespace std
+{
+  // 27.4.1  Types
+
+  // [27.4.3] template class fpos
+  /**
+   *  @doctodo
+  */
+  template<typename _StateT>
+    class fpos
+    {
+    private:
+      fpos_t		_M_pos;
+
+    public:
+      _StateT
+      state() const;
+
+      void 
+      state(_StateT __st);
+
+      fpos() : _M_pos(fpos_t()) { }
+
+      // NB: The standard defines only the implicit copy ctor and the
+      // previous two members.  The rest is a "conforming extension".
+      fpos(streamoff __off, _StateT __st = _StateT());
+
+      fpos(const fpos_t& __pos) : _M_pos(__pos) { }
+
+      operator streamoff() const { return _M_pos.__pos; }
+
+      operator fpos_t() const { return _M_pos; }
+
+      fpos& 
+      operator+=(streamoff __off) 
+      { 
+	_M_pos.__pos += __off; 
+	return *this; 
+      }
+
+      fpos& 
+      operator-=(streamoff __off) 
+      { 
+	_M_pos.__pos -= __off; 
+	return *this; 
+      }
+
+      fpos 
+      operator+(streamoff __off) 
+      { 
+	fpos __t(*this); 
+	__t += __off;
+	return __t;
+      }
+
+      fpos      
+      operator-(streamoff __off) 
+      { 
+	fpos __t(*this); 
+	__t -= __off; 
+	return __t;
+      }
+
+      bool  
+      operator==(const fpos& __pos) const
+      { return _M_pos.__pos == __pos._M_pos.__pos; }
+
+      bool  
+      operator!=(const fpos& __pos) const
+      { return !(*this == __pos); }
+    };
+
+  template<>
+    inline mbstate_t
+    fpos<mbstate_t>::state() const { return _M_pos.__state; }
+
+  template<>
+    inline void 
+    fpos<mbstate_t>::state(mbstate_t __st) { _M_pos.__state = __st; }
+
+  template<>
+    inline 
+    fpos<mbstate_t>::fpos(streamoff __off, mbstate_t __st) : _M_pos(fpos_t())
+    { 
+      _M_pos.__pos = __off;
+      _M_pos.__state = __st;
+    }
+
+  /// 27.2, paragraph 10 about fpos/char_traits circularity
+  typedef fpos<mbstate_t> 		streampos;
+#  ifdef _GLIBCPP_USE_WCHAR_T
+  /// 27.2, paragraph 10 about fpos/char_traits circularity
+  typedef fpos<mbstate_t> 		wstreampos;
+#  endif
+}  // namespace std
+
+#endif 

libstdc++-v3/configure.host

@@ -30,6 +30,8 @@
 #   abi_baseline_pair      directory name for ABI compat testing,
 #                          defaults to host_cpu-host_os (as per config.guess)
 #
+#   fpos_include_dir       directory for definition of fpos template
+#
 #   ATOMICITYH             location of atomicity.h,
 #                          defaults to cpu_include_dir
 #
@@ -52,7 +54,7 @@
 # systems out there.  :-)
 c_model=c_std
 c_compatibility=no
-
+fpos_include_dir=generic
 
 # HOST-SPECIFIC OVERRIDES
 # Set any CPU-dependent bits.
@@ -142,6 +144,7 @@ case "${host_os}" in
     ;;
   gnu* | linux*)
     os_include_dir="os/gnu-linux"
+    fpos_include_dir=$os_include_dir
     ;;
   hpux*)
     os_include_dir="os/hpux"

libstdc++-v3/configure.in

@@ -443,10 +443,13 @@ GLIBCPP_CONFIGURE_TESTSUITE
 # Propagate the target-specific source directories through the build chain.
 # (Nothing currently uses cpu_include_dir directly; only ATOMICITYH 
 # uses it, and it only gets used in this file.)
-OS_INC_SRCDIR=config/${os_include_dir}
 ATOMICITY_INC_SRCDIR=config/${ATOMICITYH}
-AC_SUBST(OS_INC_SRCDIR)
+OS_INC_SRCDIR=config/${os_include_dir}
+FPOS_INC_SRCDIR=config/${fpos_include_dir}
 AC_SUBST(ATOMICITY_INC_SRCDIR)
+AC_SUBST(FPOS_INC_SRCDIR)
+AC_SUBST(OS_INC_SRCDIR)
+
 
 # Determine cross-compile flags and all AM_CONDITIONALs.
 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)

libstdc++-v3/include/Makefile.am

@@ -116,7 +116,6 @@ bits_headers = \
 	${bits_srcdir}/cpp_type_traits.h \
 	${bits_srcdir}/demangle.h \
 	${bits_srcdir}/deque.tcc \
-	${bits_srcdir}/fpos.h \
 	${bits_srcdir}/fstream.tcc \
 	${bits_srcdir}/functexcept.h \
 	${bits_srcdir}/gslice.h \
@@ -323,7 +322,8 @@ target_headers = \
 	${target_srcdir}/ctype_inline.h \
 	${target_srcdir}/ctype_noninline.h \
 	${target_srcdir}/os_defines.h \
-	${glibcpp_srcdir}/@ATOMICITY_INC_SRCDIR@/atomicity.h 
+	${glibcpp_srcdir}/@ATOMICITY_INC_SRCDIR@/atomicity.h \
+	${glibcpp_srcdir}/@FPOS_INC_SRCDIR@/fpos.h 
 
 # Non-installed target_header files.
 target_headers_noinst = \

libstdc++-v3/include/Makefile.in

@@ -91,6 +91,8 @@ DEBUG_FLAGS = @DEBUG_FLAGS@
 DLLTOOL = @DLLTOOL@
 EXEEXT = @EXEEXT@
 EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
+FPOS_H = @FPOS_H@
+FPOS_INC_SRCDIR = @FPOS_INC_SRCDIR@
 GCJ = @GCJ@
 GCJFLAGS = @GCJFLAGS@
 GLIBCPP_IS_CROSS_COMPILING = @GLIBCPP_IS_CROSS_COMPILING@
@@ -232,7 +234,6 @@ bits_headers = \
 	${bits_srcdir}/cpp_type_traits.h \
 	${bits_srcdir}/demangle.h \
 	${bits_srcdir}/deque.tcc \
-	${bits_srcdir}/fpos.h \
 	${bits_srcdir}/fstream.tcc \
 	${bits_srcdir}/functexcept.h \
 	${bits_srcdir}/gslice.h \
@@ -433,7 +434,8 @@ target_headers = \
 	${target_srcdir}/ctype_inline.h \
 	${target_srcdir}/ctype_noninline.h \
 	${target_srcdir}/os_defines.h \
-	${glibcpp_srcdir}/@ATOMICITY_INC_SRCDIR@/atomicity.h 
+	${glibcpp_srcdir}/@ATOMICITY_INC_SRCDIR@/atomicity.h \
+	${glibcpp_srcdir}/@FPOS_INC_SRCDIR@/fpos.h 
 
 
 # Non-installed target_header files.

libstdc++-v3/include/bits/basic_ios.tcc

@@ -1,4 +1,4 @@
-// basic_ios locale and locale-related member functions -*- C++ -*-
+// basic_ios member functions -*- C++ -*-
 
 // Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
 //

libstdc++-v3/include/bits/fstream.tcc

@@ -98,9 +98,9 @@ namespace std
 	      _M_writing = false;
 	      _M_set_buffer(-1);
 
+	      // 27.8.1.3,4
 	      if ((__mode & ios_base::ate) 
 		  && this->seekoff(0, ios_base::end, __mode) < 0)
-		// 27.8.1.3,4
 		this->close();
 	      else
 		__ret = this;
@@ -203,7 +203,8 @@ namespace std
 	  streamsize __ilen = 0;
 	  if (__check_facet(_M_codecvt).always_noconv())
 	    {
-	      __elen = _M_file.xsgetn(reinterpret_cast<char*>(this->eback()), __buflen);
+	      __elen = _M_file.xsgetn(reinterpret_cast<char*>(this->eback()), 
+				      __buflen);
 	      __ilen = __elen;
 	    }
 	  else
@@ -490,11 +491,8 @@ namespace std
 	  // Ditch any pback buffers to avoid confusion.
 	  _M_destroy_pback();
 
-	  // Sync the internal and external streams.	      
+	  off_type __computed_off = __off;	  
-	  off_type __computed_off = __off;
+	  if (this->pbase() < this->pptr())
-	  
-	  if (this->pbase() < this->pptr()
-	      || _M_last_overflowed)
 	    {
 	      // Part one: update the output sequence.
 	      this->sync();
@@ -505,7 +503,7 @@ namespace std
 	  else if (_M_reading && __way == ios_base::cur)
 	    __computed_off += this->gptr() - this->egptr();
 	  
-	  // Return pos_type(off_type(-1)) in case of failure.
+	  // Returns pos_type(off_type(-1)) in case of failure.
 	  __ret = _M_file.seekoff(__computed_off * __width, __way, __mode);
 	  
 	  _M_reading = false;

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

@@ -218,9 +218,7 @@ namespace std
       */
       virtual
       ~basic_filebuf()
-      {
+      { this->close(); }
-	this->close();
-      }
 
       // Members:
       /**

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

@@ -183,13 +183,6 @@ namespace std
       */
       locale 			_M_buf_locale;	
 
-      /**
-       *  @if maint
-       *  Yet unused.
-       *  @endif
-      */
-      fpos<__state_type>	_M_pos;
-
   public:
       /// Destructor deallocates no buffer space.
       virtual 

libstdc++-v3/testsuite/27_io/basic_filebuf/showmanyc/char/9533-2.cc

@@ -27,32 +27,28 @@ void test_02()
   using namespace std;
   bool test = true;  
   const char* name = "tmp_file1";
-
   const char* strlit = "0123456789";
   
-  filebuf fbout;
+  filebuf fb;
-  fbout.open(name, ios_base::out | ios_base::trunc);
+
-	
   int written = 0;
+  fb.open(name, ios_base::out | ios_base::trunc);	
   for (int i = 0; i < BUFSIZ; ++i)
-    written += fbout.sputn(strlit, 10);
+    written += fb.sputn(strlit, 10);
-
+  fb.close();
-  fbout.close();
   
-  ifstream in(name);
+  int read = 0;
-  int sum = 0;
+  int n = 0;
-  bool gotsome;
+  char buf[10];
-
+  fb.open(name, ios_base::in);
   do
     {
-      char buf[100];
+      n = fb.sgetn(buf, sizeof(buf));
-      int n = in.readsome(buf, sizeof(buf));
+      read += n;
-      gotsome = (n > 0);
-      sum += n;
     }
-  while (gotsome);
+  while (n);
 
-  VERIFY( sum == written );
+  VERIFY( read == written );
 }
 
 int

libstdc++-v3/testsuite/27_io/basic_filebuf/sputn/char/9339.cc

@@ -31,12 +31,14 @@ void test01()
   fbuf01.open("tmp_9339", ios_base::out | ios_base::trunc);
   streamsize s1 = fbuf01.sputn("Pete Goldlust @ Carl Hammer Gallery", len);
   VERIFY( s1 == len );
+  fbuf01.close();
 
   filebuf fbuf02;
   char buf[256];
   fbuf02.open("tmp_9339", ios_base::in);
   streamsize s2 = fbuf02.sgetn(buf, 256);
   VERIFY( s2 == len );
+  fbuf02.close();
 }
 
 int main()

libstdc++-v3/testsuite/27_io/fpos/mbstate_t/1.cc

@@ -38,11 +38,11 @@ void test01()
   bool test = true;
 
   typedef std::mbstate_t state_type;
-  state_type state01;
+  state_type state01 = state_type();
-  state_type state02;
+  state_type state02 = state_type();
 
-  std::streampos pos01;
+  std::streampos pos01(0);
-  std::streampos pos02;
+  std::streampos pos02(0);
 
   std::streamoff off01;
   std::streamoff off02;
@@ -53,15 +53,16 @@ void test01()
   // 27.4.3.1 fpos members
   // void state(state_type s);
   // state_type state();
-#if 0
+
-// XXX Need to have some sanity checking for the mbstate_t type, or
+  // XXX Need to have better sanity checking for the mbstate_t type,
-// whatever the insantiating type for class fpos happens to be for
+  // or whatever the insantiating type for class fpos happens to be
-// streampos, as things like equality operators and assignment
+  // for streampos, as things like equality operators and assignment
-// operators, increment and deincrement operators need to be in place.
+  // operators, increment and deincrement operators need to be in
+  // place.
   pos01.state(state02);
   state01 = pos01.state();
-  VERIFY( state01 == state02 );
+  test = memcmp(&state01, &state02, sizeof(state_type)) == 0;
-#endif
+  VERIFY( test );
 }
 
 int main() 

libstdc++-v3/testsuite/27_io/objects/char/6.cc

@@ -26,21 +26,31 @@
 
 #include <iostream>
 #include <streambuf>
+#include <testsuite_hooks.h>
 
 class Badbuf : public std::streambuf
 {
 protected:
   virtual int sync()
-  {
+  { return -1; }
-    return -1;
-  }
 };
 
 void test06()
 {
-  std::ios_base::Init init;
+  bool test = true;
-  std::cout.rdbuf(new Badbuf);
+
-  std::cout.exceptions(std::ios_base::badbit);
+  try
+    {
+      // No-op in current code.
+      std::ios_base::Init init;
+      std::cout.rdbuf(new Badbuf);
+      std::cout.exceptions(std::ios_base::badbit);
+    }
+  catch(...)
+    {
+      test = false;
+    }
+  VERIFY( test );
 }
 
 int main()