re PR libstdc++/9322 (return value of basic_streambuf<>::getloc affected by locale::global)

2003-01-23  Petur Runolfsson  <peturr02@ru.is>

	PR libstdc++/9322
	* include/std/std_streambuf.h
	(basic_streambuf::basic_streambuf,
	basic_streambuf::~basic_streambuf,
	basic_streambuf::getloc, basic_streambuf::imbue):
	Remove _M_buf_locale_init use.
	* include/bits/fstream.tcc (basic_filebuf::imbue):  Likewise
	* testsuite/27_io/filebuf_virtuals.cc (test08):  Add.
	* testsuite/27_io/streambuf_members.cc (test08):  Add.
	* testsuite/27_io/stringbuf_virtuals.cc (test08):  Add.

From-SVN: r61678

6 files changed, 90 insertions, 24 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index ff2b166..bda8f07 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,16 @@
+2003-01-23  Petur Runolfsson  <peturr02@ru.is>
+
+	PR libstdc++/9322
+	* include/std/std_streambuf.h
+	(basic_streambuf::basic_streambuf,
+	basic_streambuf::~basic_streambuf,
+	basic_streambuf::getloc, basic_streambuf::imbue):
+	Remove _M_buf_locale_init
+	* include/bits/fstream.tcc (basic_filebuf::imbue):  Likewise
+	* testsuite/27_io/filebuf_virtuals.cc (test08):  Add.
+	* testsuite/27_io/streambuf_members.cc (test08):  Add.
+	* testsuite/27_io/stringbuf_virtuals.cc (test08):  Add.
+
 2003-01-23  Benjamin Kosnik  <bkoz@redhat.com>
 
 	Revert include ordering.
diff --git a/libstdc++-v3/include/bits/fstream.tcc b/libstdc++-v3/include/bits/fstream.tcc
index 1865a92..bf1c42e 100644
--- a/libstdc++-v3/include/bits/fstream.tcc
+++ b/libstdc++-v3/include/bits/fstream.tcc
@@ -477,10 +477,7 @@ namespace std
       bool __testbeg = gptr() == eback() && pptr() == pbase();
 
       if (__testbeg && this->_M_buf_locale != __loc)
-	{
-	  this->_M_buf_locale = __loc;
-	  this->_M_buf_locale_init = true;
-	}
+	this->_M_buf_locale = __loc;
 
       // NB this may require the reconversion of previously
       // converted chars. This in turn may cause the reconstruction
diff --git a/libstdc++-v3/include/std/std_streambuf.h b/libstdc++-v3/include/std/std_streambuf.h
index ffa14df..e7dca92 100644
--- a/libstdc++-v3/include/std/std_streambuf.h
+++ b/libstdc++-v3/include/std/std_streambuf.h
@@ -1,6 +1,6 @@
 // Stream buffer classes -*- C++ -*-
 
-// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
 // Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
@@ -224,13 +224,6 @@ namespace std
       */
       locale 			_M_buf_locale;	
 
-      /**
-       *  @if maint
-       *  True iff locale is initialized.
-       *  @endif
-      */
-      bool 			_M_buf_locale_init;
-
       //@{
       /**
        *  @if maint
@@ -364,7 +357,6 @@ namespace std
 	_M_buf_size = 0;
 	_M_buf_size_opt = 0;
 	_M_mode = ios_base::openmode(0);
-	_M_buf_locale_init = false;
       }
 
       // [27.5.2.2.1] locales
@@ -393,12 +385,7 @@ namespace std
       */
       locale   
       getloc() const
-      {
-	if (_M_buf_locale_init)
-	  return _M_buf_locale; 
-	else 
-	  return locale();
-      } 
+      { return _M_buf_locale; } 
 
       // [27.5.2.2.2] buffer management and positioning
       //@{
@@ -584,7 +571,7 @@ namespace std
       _M_buf_unified(false), _M_in_beg(0), _M_in_cur(0), _M_in_end(0), 
       _M_out_beg(0), _M_out_cur(0), _M_out_end(0), 
       _M_mode(ios_base::openmode(0)), _M_buf_locale(locale()), 
-      _M_buf_locale_init(false), _M_pback_cur_save(0), _M_pback_end_save(0), 
+      _M_pback_cur_save(0), _M_pback_end_save(0), 
       _M_pback_init(false)
       { }
 
@@ -700,7 +687,6 @@ namespace std
       virtual void 
       imbue(const locale& __loc) 
       { 
-	_M_buf_locale_init = true;
 	if (_M_buf_locale != __loc)
 	  _M_buf_locale = __loc;
       }
diff --git a/libstdc++-v3/testsuite/27_io/filebuf_virtuals.cc b/libstdc++-v3/testsuite/27_io/filebuf_virtuals.cc
index 0a92788..c02e1a7 100644
--- a/libstdc++-v3/testsuite/27_io/filebuf_virtuals.cc
+++ b/libstdc++-v3/testsuite/27_io/filebuf_virtuals.cc
@@ -1,6 +1,6 @@
 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
 
-// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+// 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
@@ -21,6 +21,7 @@
 // 27.8.1.4 Overridden virtual functions
 
 #include <fstream>
+#include <locale>
 #include <testsuite_hooks.h>
 
 // @require@ %-*.tst %-*.txt
@@ -514,6 +515,28 @@ void test06()
   VERIFY( buffer[0] == 'a' );
 }
 
+// libstdc++/9322
+void test07()
+{
+  using std::locale;
+  bool test = true;
+
+  locale loc;
+  std::filebuf ob;
+  VERIFY( ob.getloc() == loc );
+
+  locale::global(locale("en_US"));
+  VERIFY( ob.getloc() == loc );
+
+  locale loc_de ("de_DE");
+  locale ret = ob.pubimbue(loc_de);
+  VERIFY( ob.getloc() == loc_de );
+  VERIFY( ret == loc );
+
+  locale::global(loc);
+  VERIFY( ob.getloc() == loc_de );
+}
+
 main() 
 {
   test01();
@@ -524,5 +547,6 @@ main()
   test05();
   test06();
 
+  test07();
   return 0;
 }
diff --git a/libstdc++-v3/testsuite/27_io/streambuf_members.cc b/libstdc++-v3/testsuite/27_io/streambuf_members.cc
index 3f9a319..aaad07d 100644
--- a/libstdc++-v3/testsuite/27_io/streambuf_members.cc
+++ b/libstdc++-v3/testsuite/27_io/streambuf_members.cc
@@ -1,6 +1,6 @@
 // 1999-10-11 bkoz
 
-// Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+// Copyright (C) 1999, 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
@@ -364,6 +364,28 @@ test07()
   VERIFY(out.good());
 }
 
+// libstdc++/9322
+void test08()
+{
+  using std::locale;
+  bool test = true;
+
+  locale loc;
+  testbuf2 ob;
+  VERIFY( ob.getloc() == loc );
+
+  locale::global(locale("en_US"));
+  VERIFY( ob.getloc() == loc );
+
+  locale loc_de ("de_DE");
+  locale ret = ob.pubimbue(loc_de);
+  VERIFY( ob.getloc() == loc_de );
+  VERIFY( ret == loc );
+
+  locale::global(loc);
+  VERIFY( ob.getloc() == loc_de );
+}
+
 int main() 
 {
   test01();
@@ -374,5 +396,6 @@ int main()
   test05();
 
   test07();
+  test08();
   return 0;
 }
diff --git a/libstdc++-v3/testsuite/27_io/stringbuf_virtuals.cc b/libstdc++-v3/testsuite/27_io/stringbuf_virtuals.cc
index 318bb72..8a6add9 100644
--- a/libstdc++-v3/testsuite/27_io/stringbuf_virtuals.cc
+++ b/libstdc++-v3/testsuite/27_io/stringbuf_virtuals.cc
@@ -1,6 +1,6 @@
 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
 
-// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+// 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
@@ -70,6 +70,28 @@ void test02(std::stringbuf& in, bool pass)
   VERIFY( p == bad );
 }
 
+// libstdc++/9322
+void test08()
+{
+  using std::locale;
+  bool test = true;
+
+  locale loc;
+  std::stringbuf ob;
+  VERIFY( ob.getloc() == loc );
+
+  locale::global(locale("en_US"));
+  VERIFY( ob.getloc() == loc );
+
+  locale loc_de ("de_DE");
+  locale ret = ob.pubimbue(loc_de);
+  VERIFY( ob.getloc() == loc_de );
+  VERIFY( ret == loc );
+
+  locale::global(loc);
+  VERIFY( ob.getloc() == loc_de );
+}
+
 int main() 
 {
   using namespace std;
@@ -83,5 +105,6 @@ int main()
   test02(in2, false);
   test02(in3, false);
 
+  test08();
   return 0;
 }