diff --git a/clang/test/Driver/Inputs/gen-response.c b/clang/test/Driver/Inputs/gen-response.c
deleted file mode 100644
--- a/clang/test/Driver/Inputs/gen-response.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#define M -DTEST
-#define M1 M M M M M M M M M M
-#define M2 M1 M1 M1 M1 M1 M1 M1 M1 M1 M1
-#define M3 M2 M2 M2 M2 M2 M2 M2 M2 M2 M2
-#define M4 M3 M3 M3 M3 M3 M3 M3 M3 M3 M3
-#define M5 M4 M4 M4 M4 M4 M4 M4 M4 M4 M4
-#define TEXT M5 M5 M5
-TEXT
diff --git a/clang/test/Driver/response-file.c b/clang/test/Driver/response-file.c
--- a/clang/test/Driver/response-file.c
+++ b/clang/test/Driver/response-file.c
@@ -13,7 +13,7 @@
 // But there's no guarantee that we actually will (the system limit could be
 // *huge*), so just check that invoking cc1 succeeds under these conditions.
 //
-// RUN: %clang -E %S/Inputs/gen-response.c | grep DTEST > %t.1.txt
+// RUN: %python  -c 'print(*("-DTEST" for x in range(300000)))' >%t.1.txt
 // RUN: %clang -E @%t.1.txt %s -v 2>&1 | FileCheck %s -check-prefix=LONG
 // LONG: extern int it_works;