@@ -134,7 +134,12 @@ void cli_detect_env_jit(struct cli_environment *env)

 	CASE_OS(OpenBSD, os_bsd);

 	CASE_OS(Psp, os_unknown);

 	CASE_OS(Solaris, os_solaris);

-	CASE_OS(Win32, os_win32);

+	case Triple::Win32:

+	     env->os = llvm_os_Win32;

+	     if (env->os_category != os_win32 &&

+		 env->os_category != os_win64)

+		 warn_assumptions("Operating System", env->os_category, Triple::Win32);

+	     break;

 	CASE_OS(Haiku, os_unknown);

     }