[patch] update locale support fro FreeBSD

[Andreas Tobler <andreast-list@fgznet.ch>]

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All,

with the work from Jennifer Yao and John Marino we can now update the 
locale support on FreeBSD to the level of DragonFly.

Results of this work can be found on the results list.

Here my small addendum to make it work on FreeBSD.

Is this ok for trunk? (Given that the work from Jennifer and John are 
committed before stage3?)

TIA,

Andreas

2015-11-12  Andreas Tobler  <andreast@gcc.gnu.org>

	* acinclude.m4 (GLIBCXX_ENABLE_CLOCALE): Change locale implementation
	from darwin to DragonFly.
	* configure: Regenerate.
	* config/os/bsd/freebsd/ctype_configure_char.cc: Improve locale
	support, do it the same as DragonFly.
	* config/os/bsd/freebsd/os_defines.h: Add fine grained C99 defines.

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Index: acinclude.m4
===================================================================
--- acinclude.m4	(revision 230195)
+++ acinclude.m4	(working copy)
@@ -2032,10 +2032,10 @@
       linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
 	enable_clocale_flag=gnu
 	;;
-      darwin* | freebsd*)
+      darwin*)
 	enable_clocale_flag=darwin
 	;;
-      dragonfly*)
+      dragonfly* | freebsd*)
 	enable_clocale_flag=dragonfly
 	;;
       openbsd*)
@@ -2114,7 +2114,7 @@
       CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
       ;;
     darwin)
-      AC_MSG_RESULT(darwin or freebsd)
+      AC_MSG_RESULT(darwin)
 
       CLOCALE_H=config/locale/generic/c_locale.h
       CLOCALE_CC=config/locale/generic/c_locale.cc
@@ -2131,7 +2131,7 @@
       ;;
 
     dragonfly)
-      AC_MSG_RESULT(dragonfly)
+      AC_MSG_RESULT(dragonfly or freebsd)
 
       CLOCALE_H=config/locale/dragonfly/c_locale.h
       CLOCALE_CC=config/locale/dragonfly/c_locale.cc
Index: config/os/bsd/freebsd/ctype_configure_char.cc
===================================================================
--- config/os/bsd/freebsd/ctype_configure_char.cc	(revision 230195)
+++ config/os/bsd/freebsd/ctype_configure_char.cc	(working copy)
@@ -1,6 +1,6 @@
 // Locale support -*- C++ -*-
 
-// Copyright (C) 2011-2015 Free Software Foundation, Inc.
+// Copyright (C) 2014-2015 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
@@ -37,32 +37,60 @@
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
 // Information as gleaned from /usr/include/ctype.h
-  
+
   const ctype_base::mask*
   ctype<char>::classic_table() throw()
-  { return 0; }
+  { return NULL; }
 
-  ctype<char>::ctype(__c_locale, const mask* __table, bool __del, 
-		     size_t __refs) 
-  : facet(__refs), _M_del(__table != 0 && __del), 
-  _M_toupper(NULL), _M_tolower(NULL), 
-  _M_table(__table ? __table : classic_table()) 
-  { 
+  ctype<char>::ctype(__c_locale, const mask* __table, bool __del,
+		     size_t __refs)
+  : facet(__refs), _M_c_locale_ctype(_S_get_c_locale()),
+  _M_del(__table != 0 && __del), _M_widen_ok(0), _M_narrow_ok(0)
+  {
+    char* __old = setlocale(LC_CTYPE, NULL);
+    char* __sav = NULL;
+    if (strcmp(__old, "C"))
+      {
+	const size_t __len = strlen(__old) + 1;
+	__sav = new char[__len];
+	memcpy(__sav, __old, __len);
+	setlocale(LC_CTYPE, "C");
+      }
+    _M_toupper = NULL;
+    _M_tolower = NULL;
+    _M_table = __table ? __table : classic_table();
+    if (__sav)
+      {
+	setlocale(LC_CTYPE, __sav);
+	delete [] __sav;
+      }
     memset(_M_widen, 0, sizeof(_M_widen));
-    _M_widen_ok = 0;
     memset(_M_narrow, 0, sizeof(_M_narrow));
-    _M_narrow_ok = 0;
   }
 
-  ctype<char>::ctype(const mask* __table, bool __del, size_t __refs) 
-  : facet(__refs), _M_del(__table != 0 && __del), 
-  _M_toupper(NULL), _M_tolower(NULL), 
-  _M_table(__table ? __table : classic_table()) 
-  { 
+  ctype<char>::ctype(const mask* __table, bool __del, size_t __refs)
+  : facet(__refs), _M_c_locale_ctype(_S_get_c_locale()),
+  _M_del(__table != 0 && __del), _M_widen_ok(0), _M_narrow_ok(0)
+  {
+    char* __old = setlocale(LC_CTYPE, NULL);
+    char* __sav = NULL;
+    if (strcmp(__old, "C"))
+      {
+	const size_t __len = strlen(__old) + 1;
+	__sav = new char[__len];
+	memcpy(__sav, __old, __len);
+	setlocale(LC_CTYPE, "C");
+      }
+    _M_toupper = NULL;
+    _M_tolower = NULL;
+    _M_table = __table ? __table : classic_table();
+    if (__sav)
+      {
+	setlocale(LC_CTYPE, __sav);
+	delete [] __sav;
+      }
     memset(_M_widen, 0, sizeof(_M_widen));
-    _M_widen_ok = 0;
     memset(_M_narrow, 0, sizeof(_M_narrow));
-    _M_narrow_ok = 0;
   }
 
   char
@@ -84,7 +112,7 @@
   ctype<char>::do_tolower(char __c) const
   { return ::tolower((int) __c); }
 
-  const char* 
+  const char*
   ctype<char>::do_tolower(char* __low, const char* __high) const
   {
     while (__low < __high)
Index: config/os/bsd/freebsd/os_defines.h
===================================================================
--- config/os/bsd/freebsd/os_defines.h	(revision 230195)
+++ config/os/bsd/freebsd/os_defines.h	(working copy)
@@ -29,6 +29,10 @@
 // System-specific #define, typedefs, corrections, etc, go here.  This
 // file will come before all others.
 
+#define _GLIBCXX_USE_C99_STDIO 1
+#define _GLIBCXX_USE_C99_STDLIB 1
+#define _GLIBCXX_USE_C99_WCHAR 1
+
 #define _GLIBCXX_USE_C99_CHECK 1
 #define _GLIBCXX_USE_C99_DYNAMIC (!(__ISO_C_VISIBLE >= 1999))
 #define _GLIBCXX_USE_C99_LONG_LONG_CHECK 1