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diff --git a/test/VFS/incomplete-umbrella.m b/test/VFS/incomplete-umbrella.m
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+// RUN: rm -rf %t
+// RUN: mkdir -p %t/Incomplete.framework/Headers
+// RUN: echo '// IncompleteReal.h' > %t/Incomplete.framework/Headers/IncompleteReal.h
+// RUN: sed -e "s:INPUT_DIR:%S/Inputs:g" -e "s:OUT_DIR:%t:g" %S/Inputs/vfsoverlay.yaml > %t.yaml
+// RUN: not %clang_cc1 -Werror -fmodules -fmodules-cache-path=%t \
+// RUN: -ivfsoverlay %t.yaml -F %t -fsyntax-only %s 2>&1 | FileCheck %s
+// REQUIRES: shell
+
+@import Incomplete;
+// CHECK: umbrella header for module 'Incomplete' {{.*}}IncompleteVFS.h
+// CHECK: umbrella header for module 'Incomplete' {{.*}}IncompleteReal.h
+// CHECK: could not build module 'Incomplete'