XFAIL test on Windows

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142703 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Driver/debug.c b/test/Driver/debug.c
index a3c343b..0f5ce2a 100644
--- a/test/Driver/debug.c
+++ b/test/Driver/debug.c
@@ -6,3 +6,5 @@
 
 // "PWD=/foo gcc" wouldn't necessarily work. You would need to pick a different
 // path to the same directory (try a symlink).
+
+// XFAIL: win32