[clang] [clang] Avoid triggering vtable instantiation for C++23 constexpr dtor (PR #102605)

[via cfe-commits]

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@@ -7042,12 +7042,38 @@ void Sema::CheckCompletedCXXClass(Scope *S, CXXRecordDecl *Record) {
       }
     }
 
+    bool EffectivelyConstexprDestructor = true;
+    // Avoid triggering vtable instantiation due to a dtor that is not
+    // "effectively constexpr" for better compatibility.
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cor3ntin wrote:

I think we want more comment here (and/or a reference to the issue)

https://github.com/llvm/llvm-project/pull/102605