[clang] [Clang] Fix handling of overloads differing only by constraints and ref-qualifiers (PR #192018)

[Vlad Serebrennikov via cfe-commits]

================
@@ -212,5 +212,16 @@ struct T : S {
     virtual void k() &;
     virtual void l() &&;
 };
+#if __cplusplus >= 202002L
+
+// We should not error on inconsistent ref-qualifiers if the functions
+// have different constraints.
+template <unsigned R> struct type {
+    void func() const requires(R == 0);
+    void func() & requires(R == 1);
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Endilll wrote:

No overriding of virtual functions is happening here. Why is this case in CWG2496 test?

https://github.com/llvm/llvm-project/pull/192018