re PR libstdc++/13631 (Problems in messages)

	PR libstdc++/13631
	* config/locale/gnu/messages_members.cc (get_glibc_msg): Fix fallback
	implementation for old glibc. Fix whitespace.

From-SVN: r221494

libstdc++-v3/ChangeLog

 2015-03-18  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/13631
+	* config/locale/gnu/messages_members.cc (get_glibc_msg): Fix fallback
+	implementation for old glibc. Fix whitespace.
+
+2015-03-18  Jonathan Wakely  <jwakely@redhat.com>
 	    Torvald Riegel  <triegel@redhat.com>
 
 	* acinclude.m4 (GLIBCXX_CHECK_GTHREADS): Check for pthread_rwlock_t.

libstdc++-v3/config/locale/gnu/messages_members.cc

@@ -34,6 +34,8 @@
 #include <limits>
 #include <algorithm>
 #include <vector>
+#include <cstdlib>	// std::free
+#include <string.h>	// ::strdup
 
 #include <backward/auto_ptr.h>
 #include <ext/concurrence.h>
@@ -139,28 +141,28 @@ namespace
   }
 
   const char*
-  get_glibc_msg(__c_locale __attribute__((unused)) __locale_messages,
+  get_glibc_msg(__c_locale __locale_messages __attribute__((unused)),
+		const char* __name_messages __attribute__((unused)),
 		const char* __domainname,
 		const char* __dfault)
   {
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     std::__c_locale __old = __uselocale(__locale_messages);
-    const char* __msg =
-      const_cast<const char*>(dgettext(__domainname, __dfault));
+    const char* __msg = dgettext(__domainname, __dfault);
     __uselocale(__old);
+    return __msg;
 #else
-      char* __old = setlocale(LC_ALL, 0);
-      const size_t __len = strlen(__old) + 1;
-      char* __sav = new char[__len];
-      memcpy(__sav, __old, __len);
-      setlocale(LC_ALL, _M_name_messages);
+    if (char* __sav = strdup(setlocale(LC_ALL, 0)))
+      {
+	setlocale(LC_ALL, __name_messages);
 	const char* __msg = dgettext(__domainname, __dfault);
 	setlocale(LC_ALL, __sav);
-      delete [] __sav;
-#endif
-
+	free(__sav);
 	return __msg;
       }
+    return __dfault;
+#endif
+  }
 }
 
 namespace std _GLIBCXX_VISIBILITY(default)
@@ -199,7 +201,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       if (!__cat_info)
 	return __dfault;
 
-      return get_glibc_msg(_M_c_locale_messages,
+      return get_glibc_msg(_M_c_locale_messages, _M_name_messages,
 			   __cat_info->_M_domain.c_str(),
 			   __dfault.c_str());
     }
@@ -257,8 +259,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
 	// Make sure string passed to dgettext is \0 terminated.
 	*__dfault_next = '\0';
-	__translation
-	  = get_glibc_msg(_M_c_locale_messages,
+	__translation = get_glibc_msg(_M_c_locale_messages, _M_name_messages,
 				      __cat_info->_M_domain.c_str(), __dfault);
 
 	// If we end up getting default value back we can simply return original