Attributes accepting an EnumArgument are allowed to pass a string literal, or an identifier. VariadicEnumArguments now behave consistently instead of only accepting a string literal.

This change affects the only attribute accepting a variadic enumeration: callable_when.

llvm-svn: 224582
diff --git a/clang/test/SemaCXX/warn-consumed-parsing.cpp b/clang/test/SemaCXX/warn-consumed-parsing.cpp
index 5c0a04f..1796041 100644
--- a/clang/test/SemaCXX/warn-consumed-parsing.cpp
+++ b/clang/test/SemaCXX/warn-consumed-parsing.cpp
@@ -37,6 +37,7 @@
   void callableWhen0()  CALLABLE_WHEN("unconsumed");
   void callableWhen1()  CALLABLE_WHEN(42); // expected-error {{'callable_when' attribute requires a string}}
   void callableWhen2()  CALLABLE_WHEN("foo"); // expected-warning {{'callable_when' attribute argument not supported: foo}}
+  void callableWhen3()  CALLABLE_WHEN(unconsumed);
   void consumes()       SET_TYPESTATE(consumed);
   bool testUnconsumed() TEST_TYPESTATE(consumed);
 };