c_locale.h (__convert_from_v): Only switch to the "C" locale if the current one isn't already "C" (for old glibcs).

2007-05-24  Paolo Carlini  <pcarlini@suse.de>

	* config/locale/gnu/c_locale.h (__convert_from_v): Only switch to the
	"C" locale if the current one isn't already "C" (for old glibcs).
	* config/os/gnu-linux/ctype_noninline.h (ctype<char>::classic_table,
	ctype<char>::ctype(__c_locale, const mask*, bool, size_t),
	ctype<char>::ctype(const mask*, bool, size_t)): Likewise, for generic
	locale model.
	* config/locale/gnu/messages_members.h
	(messages<>::messages(__c_locale, const char*, size_t),
	messages_byname<_CharT>::messages_byname(const char*, size_t)):
	Only dynamically allocate memory if __s != "C".
	* config/locale/gnu/time_members.h
	(__timepunct<_CharT>::__timepunct(__c_locale, const char*, size_t)):
	Likewise.
	* config/locale/generic/time_members.h
	(__timepunct<_CharT>::__timepunct(__c_locale, const char*, size_t)):
	Likewise.

	* testsuite/util/testsuite_allocator.h: Revert last change.

From-SVN: r125028

5 files changed, 99 insertions, 47 deletions

diff --git a/libstdc++-v3/config/locale/generic/time_members.h b/libstdc++-v3/config/locale/generic/time_members.h
index dc38769..20c2b54 100644
--- a/libstdc++-v3/config/locale/generic/time_members.h
+++ b/libstdc++-v3/config/locale/generic/time_members.h
@@ -62,17 +62,23 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
     __timepunct<_CharT>::__timepunct(__c_locale __cloc, const char* __s, 
 				     size_t __refs) 
     : facet(__refs), _M_data(NULL)
-    { 
-      const size_t __len = __builtin_strlen(__s) + 1;
-      char* __tmp = new char[__len];
-      __builtin_memcpy(__tmp, __s, __len);
-      _M_name_timepunct = __tmp;
+    {
+      if (__builtin_strcmp(__s, _S_get_c_name()) != 0)
+	{
+	  const size_t __len = __builtin_strlen(__s) + 1;
+	  char* __tmp = new char[__len];
+	  __builtin_memcpy(__tmp, __s, __len);
+	  _M_name_timepunct = __tmp;
+	}
+      else
+	_M_name_timepunct = _S_get_c_name();
 
       try
 	{ _M_initialize_timepunct(__cloc); }
       catch(...)
-	{ 
-	  delete [] _M_name_timepunct;
+	{
+	  if (_M_name_timepunct != _S_get_c_name())
+	    delete [] _M_name_timepunct;
 	  __throw_exception_again;
 	}
     }
diff --git a/libstdc++-v3/config/locale/gnu/c_locale.h b/libstdc++-v3/config/locale/gnu/c_locale.h
index 33a2c07..67ecb7d 100644
--- a/libstdc++-v3/config/locale/gnu/c_locale.h
+++ b/libstdc++-v3/config/locale/gnu/c_locale.h
@@ -76,11 +76,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __c_locale __old = __gnu_cxx::__uselocale(__cloc);
 #else
-    char* __old = std::setlocale(LC_ALL, NULL);
-    const size_t __len = __builtin_strlen(__old) + 1;
-    char* __sav = new char[__len];
-    __builtin_memcpy(__sav, __old, __len);
-    std::setlocale(LC_ALL, "C");
+    char* __old = std::setlocale(LC_NUMERIC, NULL);
+    char* __sav = NULL;
+    if (__builtin_strcmp(__old, "C"))
+      {
+	const size_t __len = __builtin_strlen(__old) + 1;
+	char* __sav = new char[__len];
+	__builtin_memcpy(__sav, __old, __len);
+	std::setlocale(LC_NUMERIC, "C");
+      }
 #endif
 
     __builtin_va_list __args;
@@ -97,8 +101,11 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __gnu_cxx::__uselocale(__old);
 #else
-    std::setlocale(LC_ALL, __sav);
-    delete [] __sav;
+    if (__sav)
+      {
+	std::setlocale(LC_NUMERIC, __sav);
+	delete [] __sav;
+      }
 #endif
     return __ret;
   }
diff --git a/libstdc++-v3/config/locale/gnu/messages_members.h b/libstdc++-v3/config/locale/gnu/messages_members.h
index bfe2533..28d783c 100644
--- a/libstdc++-v3/config/locale/gnu/messages_members.h
+++ b/libstdc++-v3/config/locale/gnu/messages_members.h
@@ -55,10 +55,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 				size_t __refs) 
      : facet(__refs), _M_c_locale_messages(NULL), _M_name_messages(NULL)
      {
-       const size_t __len = __builtin_strlen(__s) + 1;
-       char* __tmp = new char[__len];
-       __builtin_memcpy(__tmp, __s, __len);
-       _M_name_messages = __tmp;
+       if (__builtin_strcmp(__s, _S_get_c_name()) != 0)
+	 {
+	   const size_t __len = __builtin_strlen(__s) + 1;
+	   char* __tmp = new char[__len];
+	   __builtin_memcpy(__tmp, __s, __len);
+	   _M_name_messages = __tmp;
+	 }
+       else
+	 _M_name_messages = _S_get_c_name();
 
        // Last to avoid leaking memory if new throws.
        _M_c_locale_messages = _S_clone_c_locale(__cloc);
@@ -104,11 +109,18 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
      : messages<_CharT>(__refs) 
      { 
        if (this->_M_name_messages != locale::facet::_S_get_c_name())
-	 delete [] this->_M_name_messages;
-       const size_t __len = __builtin_strlen(__s) + 1;
-       char* __tmp = new char[__len];
-       __builtin_memcpy(__tmp, __s, __len);
-       this->_M_name_messages = __tmp;
+	 {
+	   delete [] this->_M_name_messages;
+	   if (__builtin_strcmp(__s, locale::facet::_S_get_c_name()) != 0)
+	     {
+	       const size_t __len = __builtin_strlen(__s) + 1;
+	       char* __tmp = new char[__len];
+	       __builtin_memcpy(__tmp, __s, __len);
+	       this->_M_name_messages = __tmp;
+	     }
+	   else
+	     this->_M_name_messages = locale::facet::_S_get_c_name();
+	 }
 
        if (__builtin_strcmp(__s, "C") != 0
 	   && __builtin_strcmp(__s, "POSIX") != 0)
diff --git a/libstdc++-v3/config/locale/gnu/time_members.h b/libstdc++-v3/config/locale/gnu/time_members.h
index 7f97bcb..3e5e0c3 100644
--- a/libstdc++-v3/config/locale/gnu/time_members.h
+++ b/libstdc++-v3/config/locale/gnu/time_members.h
@@ -59,17 +59,23 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 				     size_t __refs) 
     : facet(__refs), _M_data(NULL), _M_c_locale_timepunct(NULL), 
       _M_name_timepunct(NULL)
-    { 
-      const size_t __len = __builtin_strlen(__s) + 1;
-      char* __tmp = new char[__len];
-      __builtin_memcpy(__tmp, __s, __len);
-      _M_name_timepunct = __tmp;
+    {
+      if (__builtin_strcmp(__s, _S_get_c_name()) != 0)
+	{
+	  const size_t __len = __builtin_strlen(__s) + 1;
+	  char* __tmp = new char[__len];
+	  __builtin_memcpy(__tmp, __s, __len);
+	  _M_name_timepunct = __tmp;
+	}
+      else
+	_M_name_timepunct = _S_get_c_name();
 
       try
 	{ _M_initialize_timepunct(__cloc); }
       catch(...)
 	{
-	  delete [] _M_name_timepunct;
+	  if (_M_name_timepunct != _S_get_c_name())
+	    delete [] _M_name_timepunct;
 	  __throw_exception_again;
 	}
     }
diff --git a/libstdc++-v3/config/os/gnu-linux/ctype_noninline.h b/libstdc++-v3/config/os/gnu-linux/ctype_noninline.h
index 779b26a..808b25c 100644
--- a/libstdc++-v3/config/os/gnu-linux/ctype_noninline.h
+++ b/libstdc++-v3/config/os/gnu-linux/ctype_noninline.h
@@ -50,17 +50,24 @@
   {
     const ctype_base::mask* __ret;
     char* __old = setlocale(LC_CTYPE, NULL);
-    const size_t __len = __builtin_strlen(__old) + 1;
-    char* __sav = new char[__len];
-    __builtin_memcpy(__sav, __old, __len);
-    setlocale(LC_CTYPE, "C");
+    char* __sav = NULL;
+    if (__builtin_strcmp(__old, "C"))
+      {
+	const size_t __len = __builtin_strlen(__old) + 1;
+	__sav = new char[__len];
+	__builtin_memcpy(__sav, __old, __len);
+	setlocale(LC_CTYPE, "C");
+      }
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __ret = *__ctype_b_loc();
 #else
     __ret = __ctype_b;
 #endif
-    setlocale(LC_CTYPE, __sav);
-    delete [] __sav;
+    if (__sav)
+      {
+	setlocale(LC_CTYPE, __sav);
+	delete [] __sav;
+      }
     return __ret;
   }
 #endif
@@ -85,10 +92,14 @@
   _M_del(__table != 0 && __del), _M_widen_ok(0), _M_narrow_ok(0)
   {
     char* __old = setlocale(LC_CTYPE, NULL);
-    const size_t __len = __builtin_strlen(__old) + 1;
-    char* __sav = new char[__len];
-    __builtin_memcpy(__sav, __old, __len);    
-    setlocale(LC_CTYPE, "C");
+    char* __sav = NULL;
+    if (__builtin_strcmp(__old, "C"))
+      {    
+	const size_t __len = __builtin_strlen(__old) + 1;
+	__sav = new char[__len];
+	__builtin_memcpy(__sav, __old, __len);    
+	setlocale(LC_CTYPE, "C");
+      }
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     _M_toupper = *__ctype_toupper_loc();
     _M_tolower = *__ctype_tolower_loc();
@@ -98,8 +109,11 @@
     _M_tolower = __ctype_tolower;
     _M_table = __table ? __table : __ctype_b;
 #endif
-    setlocale(LC_CTYPE, __sav);
-    delete [] __sav;
+    if (__sav)
+      {
+	setlocale(LC_CTYPE, __sav);
+	delete [] __sav;
+      }
     __builtin_memset(_M_widen, 0, sizeof(_M_widen));
     __builtin_memset(_M_narrow, 0, sizeof(_M_narrow));
   }
@@ -123,10 +137,14 @@
   _M_del(__table != 0 && __del), _M_widen_ok(0), _M_narrow_ok(0)
   {
     char* __old = setlocale(LC_CTYPE, NULL);
-    const size_t __len = __builtin_strlen(__old) + 1;
-    char* __sav = new char[__len];
-    __builtin_memcpy(__sav, __old, __len);
-    setlocale(LC_CTYPE, "C");
+    char* __sav = NULL;
+    if (__builtin_strcmp(__old, "C"))
+      {
+	const size_t __len = __builtin_strlen(__old) + 1;
+	__sav = new char[__len];
+	__builtin_memcpy(__sav, __old, __len);
+	setlocale(LC_CTYPE, "C");
+      }
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     _M_toupper = *__ctype_toupper_loc();
     _M_tolower = *__ctype_tolower_loc();
@@ -136,8 +154,11 @@
     _M_tolower = __ctype_tolower;
     _M_table = __table ? __table : __ctype_b;
 #endif
-    setlocale(LC_CTYPE, __sav);
-    delete [] __sav;
+    if (__sav)
+      {
+	setlocale(LC_CTYPE, __sav);
+	delete [] __sav;
+      }
     __builtin_memset(_M_widen, 0, sizeof(_M_widen));
     __builtin_memset(_M_narrow, 0, sizeof(_M_narrow));
   }