[clang] [Clang] Properly parse enumeration declarations with fixed underlying type in generic associations (PR #210353)

[Aaron Ballman via cfe-commits]

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@@ -1529,8 +1536,20 @@ Parser::isCXXDeclarationSpecifier(ImplicitTypenameContext AllowImplicitTypename,
     //     enum E : int { a = 4 }; // enum
     //     enum E : int { 4 };     // bit-field
     //   };
-    if (getLangOpts().CPlusPlus11 && NextToken().is(tok::l_brace))
+    if (getLangOpts().CPlusPlus11 && NextToken().is(tok::l_brace)) {
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AaronBallman wrote:

Is there a test case covering these changes?

https://github.com/llvm/llvm-project/pull/210353