Forget to say, I test it on Debian, X86_64, g++ 4.7.1
> I searched the ABI description in > http://mentorembedded.github.com/cxx-abi/cxx-vtable-ex.html & > http://www.phpcompiler.org/articles/virtualinheritance.html, and didn't found > the exactly description for the following case: > > > > struct Foo{ virtual void foo() {} }; > > struct Bar{ virtual void bar() {} }; > > struct B { void* data; }; > > > > struct X : public B, Foo, Bar { }; > > > > I expected the memory order of bases is: > > { > > data of B; > > vptr of Foo; > > vptr of Bar; > > } > > > > but the actual result is: > > { > > vptr of Foo; > > data of B; > > vptr of Bar; > > }; > > if both Foo and Bar has no virtual functions, the result would be: > > { > > data of B; > > vptr of Foo; > > vptr of Bar; > > }; > > > > So, I can't judge the memory layout for the following code: > > template<typename A, typename B, typename C> > > struct Mix : public A, B, C {} > > > > So, I want to know, is it a bug of gcc? Is the case clarified in any > standards? > > > > Great thanks for any information. _______________________________________________ help-gplusplus mailing list help-gplusplus@gnu.org https://lists.gnu.org/mailman/listinfo/help-gplusplus
