lib/win32/security/sid.rb in win32-security-0.3.0 vs lib/win32/security/sid.rb in win32-security-0.3.1

@@ -181,10 +181,16 @@
       #  Win32::Security::SID.new("\001\000\000\000\000\000\001\000\000\000\000")
       #
       def initialize(account=nil, host=Socket.gethostname)
         if account.nil?
           begin
-            ptoken = FFI::MemoryPointer.new(:uintptr_t)
+            if RUBY_PLATFORM == 'java' && ENV_JAVA['sun.arch.data.model'] == '64'
+              ptr_type = :ulong_long
+            else
+              ptr_type = :uintptr_t
+            end
+
+            ptoken = FFI::MemoryPointer.new(ptr_type)
 
             # Try the thread token first, default to the process token.
             bool = OpenThreadToken(GetCurrentThread(), TOKEN_QUERY, true, ptoken)
 
             if !bool && FFI.errno != ERROR_NO_TOKEN