atomicity.h (__atomic_add): Make first argument volatile.

	* config/cpu/hppa/atomicity.h (__atomic_add): Make first argument
	volatile.
	* config/os/hpux/os_defines.h (_GLIBCXX_INST_ATOMICITY_LOCK): Use
	__GXX_WEAK__ instead of _GLIBCXX_SUPPORTS_WEAK.

From-SVN: r78633

libstdc++-v3/ChangeLog

+2004-02-28  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	* config/cpu/hppa/atomicity.h (__atomic_add): Make first argument
+	volatile.
+	* config/os/hpux/os_defines.h (_GLIBCXX_INST_ATOMICITY_LOCK): Use
+	__GXX_WEAK__ instead of _GLIBCXX_SUPPORTS_WEAK.
+
 2004-02-28  Paolo Carlini  <pcarlini@suse.de>
 
 	* include/bits/locale_facets.tcc (num_get<>::_M_extract_float):

libstdc++-v3/config/cpu/hppa/atomicity.h

@@ -76,7 +76,7 @@ namespace __gnu_cxx
   
   void
   __attribute__ ((__unused__))
-  __atomic_add(_Atomic_word* __mem, int __val)
+  __atomic_add(volatile _Atomic_word* __mem, int __val)
   {
     int tmp;
     volatile int& lock = _Atomicity_lock<0>::_S_atomicity_lock;

libstdc++-v3/config/os/hpux/os_defines.h

 // Specific definitions for HPUX  -*- C++ -*-
 
-// Copyright (C) 2000, 2002 Free Software Foundation, Inc.
+// Copyright (C) 2000, 2002, 2004 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
@@ -93,7 +93,7 @@ typedef long int __padding_type;
 
 /* We need explicit instantiation of the atomicity lock on HPPA if
    there is no weak support.  */
-#if !defined(_GLIBCXX_SUPPORTS_WEAK) && defined (__hppa__)
+#if !__GXX_WEAK__ && defined (__hppa__)
 #define _GLIBCXX_INST_ATOMICITY_LOCK 1
 #endif