Index: test/clang-tidy/clang-cl-driver.cpp
===================================================================
--- /dev/null
+++ test/clang-tidy/clang-cl-driver.cpp
@@ -0,0 +1,17 @@
+// RUN: clang-tidy -checks=-*,modernize-use-nullptr %s -- --driver-mode=cl /DTEST1 /DFOO=foo /DBAR=bar | FileCheck -implicit-check-not="{{warning|error}}:" %s
+int *a = 0;
+// CHECK: :[[@LINE-1]]:10: warning: use nullptr
+#ifdef TEST1
+int *b = 0;
+// CHECK: :[[@LINE-1]]:10: warning: use nullptr
+#endif
+#define foo 1
+#define bar 1
+#if FOO
+int *c = 0;
+// CHECK: :[[@LINE-1]]:10: warning: use nullptr
+#endif
+#if BAR
+int *d = 0;
+// CHECK: :[[@LINE-1]]:10: warning: use nullptr
+#endif
\ No newline at end of file