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diff --git a/test/Driver/clang_cpp.c b/test/Driver/clang_cpp.c
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+// Verify that -include isn't included twice with -save-temps.
+// RUN: clang -S -o - %s -include %t.h -save-temps -### 2> %t.log &&
+// RUN: grep '"-include' %t.log | count 1
+
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