[clang] [clang] Output an error when [[lifetimebound]] attribute is applied on a function implicit object parameter while the function returns void (PR #114203)

[Utkarsh Saxena via cfe-commits]

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@@ -6967,6 +6967,11 @@ static void checkAttributesAfterMerging(Sema &S, NamedDecl &ND) {
         } else if (isa<CXXConstructorDecl>(MD) || isa<CXXDestructorDecl>(MD)) {
           S.Diag(A->getLocation(), diag::err_lifetimebound_ctor_dtor)
               << isa<CXXDestructorDecl>(MD) << A->getRange();
+        } else if (FD->getReturnType()->isVoidType()) {
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usx95 wrote:

nit: use `MD` instead of `FD` since we are working on a method decl (although both are correct).

https://github.com/llvm/llvm-project/pull/114203