Дмитрий Оксенчук <oksenchuk89@xxxxxxxxx> writes: > Linker doesn't say anything when i create any virtual function in B or > replace virtual ~A() to virtual void f() for example. Read about the key method and type_info objects here: http://gcc.gnu.org/onlinedocs/gcc/Vague-Linkage.html I won't go into all the details, but basically if you mix -frtti and -fno-rtti code you need to ensure that any classes created in the -frtti code have their key method compiled with -frtti. Ian
