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-rw-r--r--test/Parser/cxx-default-args.cpp9
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diff --git a/test/Parser/cxx-default-args.cpp b/test/Parser/cxx-default-args.cpp
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+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+// PR6647
+class C {
+ // After the error, the rest of the tokens inside the default arg should be
+ // skipped, avoiding a "expected ';' after class" after 'undecl'.
+ void m(int x = undecl + 0); // expected-error {{use of undeclared identifier 'undecl'}}
+};
+
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