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-rw-r--r--test/Modules/missing-flag.cpp4
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diff --git a/test/Modules/missing-flag.cpp b/test/Modules/missing-flag.cpp
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+// RUN: not %clang_cc1 -x c++-module-map %s -emit-module -fmodule-name=Foo -o %t 2>&1 | FileCheck %s
+// CHECK: module compilation requires '-fmodules'
+module Foo {}
+#pragma clang module contents