system001 test is expected to fail on Win64

libraries/base/tests/System/all.T

@@ -4,6 +4,6 @@ test('getArgs001',  normal, compile_and_run, [''])
 test('getEnv001',   normal, compile_and_run, [''])
 test('T5930',   normal, compile_and_run, [''])
 
-test('system001',   if_platform("i386-unknown-mingw32", expect_fail), \
+test('system001',   if_os("mingw32", expect_fail), \
 	compile_and_run, [''])