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+// RUN: %clang_cc1 %s -verify
+// RUN: not %clang_cc1 %s 2>&1 | FileCheck %s
+
+// There is a special characters on the following line, which is used as a
+// marker character for diagnostic printing. Ensure diagnostics involving
+// this character does not cause problems with the diagnostic printer.
+#error Hi  Bye
+//expected-error@-1 {{Hi Bye}}
+
+// CHECK: error: Hi Bye
+// CHECK: #error Hi <U+007F> Bye
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