[PATCH] D66040: [Sema] Implement DR2386 for C++17 structured binding

[Jeroen Van Antwerpen via Phabricator via cfe-commits]

Jeroen added a comment.

In the reproduction of https://bugs.llvm.org/show_bug.cgi?id=33236 there is explicit mentioning of `const T`. It would be nice if the test cases for this fix would also have coverage for that.



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Comment at: clang/test/CXX/dcl.decl/dcl.decomp/p3.cpp:15
 template<> struct std::tuple_size<Bad1> {};
-void no_tuple_size_3() { auto [x, y] = Bad1(); } // expected-error {{cannot decompose this type; 'std::tuple_size<Bad1>::value' is not a valid integral constant expression}}
+void no_tuple_size_3() { auto [x, y] = Bad1(); } // ok, omitting value is valid after DR2386
 
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In the reproduction of https://bugs.llvm.org/show_bug.cgi?id=33236 there is explicit mentioning of `const T`. It would be nice if the test cases for this fix would also have coverage for that.


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