diff --git a/clang/test/Frontend/absolute-paths-import.h b/clang/test/Frontend/absolute-paths-import.h
new file mode 100644
--- /dev/null
+++ b/clang/test/Frontend/absolute-paths-import.h
@@ -0,0 +1 @@
+#warning abc
diff --git a/clang/test/Frontend/absolute-paths.c b/clang/test/Frontend/absolute-paths.c
--- a/clang/test/Frontend/absolute-paths.c
+++ b/clang/test/Frontend/absolute-paths.c
@@ -1,5 +1,9 @@
-// RUN: %clang_cc1 -fsyntax-only -I %S/Inputs/SystemHeaderPrefix/.. %s 2>&1 | FileCheck -check-prefix=NORMAL -check-prefix=CHECK %s
-// RUN: %clang_cc1 -fsyntax-only -I %S/Inputs/SystemHeaderPrefix/.. -fdiagnostics-absolute-paths %s 2>&1 | FileCheck -check-prefix=ABSOLUTE -check-prefix=CHECK %s
+// RUN: %clang_cc1 -fsyntax-only -I %S/Inputs/SystemHeaderPrefix/.. %s 2>&1 | FileCheck -DROOT_ABSOLUTE=%s -check-prefix=NORMAL -check-prefix=CHECK %s
+// RUN: %clang_cc1 -fsyntax-only -I %S/Inputs/SystemHeaderPrefix/.. -fdiagnostics-absolute-paths %s 2>&1 | FileCheck -DROOT_ABSOLUTE=%s -check-prefix=ABSOLUTE -check-prefix=CHECK %s --dump-input-filter=all
+
+#include "absolute-paths-import.h"
+// NORMAL: In file included from [[ROOT_ABSOLUTE]]:4:
+// ABSOLUTE: In file included from [[ROOT_ABSOLUTE]]:4:
 
 #include "absolute-paths.h"