--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/PCH/modified-header-error.c	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,14 @@
+// RUN: mkdir -p %t.dir
+// RUN: echo '#include "header2.h"' > %t.dir/header1.h
+// RUN: echo > %t.dir/header2.h
+// RUN: cp %s %t.dir/t.c
+// RUN: %clang_cc1 -x c-header %t.dir/header1.h -emit-pch -o %t.pch
+// RUN: echo >> %t.dir/header2.h
+// RUN: not %clang_cc1 %t.dir/t.c -include-pch %t.pch -fsyntax-only 2>&1 | FileCheck %s
+
+#include "header2.h"
+
+// CHECK: fatal error: file {{.*}} has been modified since the precompiled header {{.*}} was built
+
+// FIXME: Flaky on Windows, timestamp resolution?
+// UNSUPPORTED: win32