[clang] [clang] Ensure fixed point conversions work in C++ (PR #68344)

[John McCall via cfe-commits]

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@@ -156,7 +156,8 @@ ImplicitConversionRank clang::GetConversionRank(ImplicitConversionKind Kind) {
                      // it was omitted by the patch that added
                      // ICK_Zero_Queue_Conversion
     ICR_C_Conversion,
-    ICR_C_Conversion_Extension
+    ICR_C_Conversion_Extension,
+    ICR_C_Conversion_Extension,
----------------
rjmccall wrote:

What's the consequence of using `ICR_C_Conversion_Extension` here instead of just an ordinary conversion?  In a sense, this isn't an extension in the same way that some of the other conversions are — these are just fundamental types that C++ hasn't incorporated into the standard yet.

https://github.com/llvm/llvm-project/pull/68344