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Derived1 :: Base e Derived2 :: Base se referem ao mesmo tipo?
MSVC, Clang e GCC discordam deste código: struct Base { int x; }; struct Der1 : public Base {}; struct Der2 : public Base {}; struct AllDer : public Der1, public Der2 { void foo() { Der1::Base::x = 5; } }; Godbolt GCC: <source>: In member function 'void AllDer::foo()': <source>:10:21: …