Index: llvm/tools/clang/test/Driver/mg.c
===================================================================
--- llvm.orig/tools/clang/test/Driver/mg.c
+++ llvm/tools/clang/test/Driver/mg.c
@@ -1,5 +1,5 @@
-// RUN: %clang -M -MG -include nonexistent-preinclude.h %s > %t
-// RUN: grep -F nonexistent-preinclude.h %t
-// RUN: grep -F nonexistent-ppinclude.h %t
+// RUN: %clang -M -MG -include nonexistent-preinclude.h %s 2>&1 | FileCheck %s
+// CHECK: nonexistent-preinclude.h
+// CHECK: nonexistent-ppinclude.h
 
 #include "nonexistent-ppinclude.h"