Index: test/asan/TestCases/printf-4.c
===================================================================
--- test/asan/TestCases/printf-4.c
+++ test/asan/TestCases/printf-4.c
@@ -2,8 +2,9 @@
 // RUN: %env_asan_opts=check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 // RUN: not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 
-// FIXME: sprintf is not intercepted on Windows yet.
-// XFAIL: win32
+// FIXME: sprintf is not intercepted on Windows yet. But this test can
+// pass if sprintf calls memmove, which is intercepted, so we can't XFAIL it.
+// UNSUPPORTED: win32
 
 #include <stdio.h>
 int main() {