[clang] [clang] [C++20] Defaulted operator== doesn't lookup in using-directive properly #97087 (PR #99542)

[Vlad Serebrennikov via cfe-commits]

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@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -std=c++20 -fsyntax-only %s
+// expected-no-diagnostics 
+struct X {};
+namespace NS {
+    bool operator==(X, X);
+}
+using namespace NS;
+struct Y {
+    X x;
+    friend bool operator==(Y, Y);
+};
+bool operator==(Y, Y) = default;
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Endilll wrote:

Can you also add the following test: https://godbolt.org/z/hE3h4b4oM

https://github.com/llvm/llvm-project/pull/99542