https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81860
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- tmp$ g++ test-case3.cpp -c && nm test-case3.o U _ZN1AIjEC1Ev 0000000000000000 W _ZN1BC1IiEET_RK1AIjE 0000000000000000 W _ZN1BC2IiEET_RK1AIjE 0000000000000000 n _ZN1BC5IiEET_RK1AIjE 0000000000000000 W _ZN1CCI11BIiEET_RK1AIjE 0000000000000000 W _ZN1CCI21BIiEET_RK1AIjE 0000000000000000 n _ZN1CCI51BIiEET_RK1AIjE 0000000000000000 T main tmp$ g++ test-case3.cpp -c -fno-new-inheriting-ctors && nm test-case3.o 0000000000000000 W _ZN1AIjEC1Ev 0000000000000000 W _ZN1AIjEC2Ev 0000000000000000 n _ZN1AIjEC5Ev 0000000000000000 W _ZN1BC1IiEET_RK1AIjE 0000000000000000 W _ZN1BC2IiEET_RK1AIjE 0000000000000000 n _ZN1BC5IiEET_RK1AIjE 0000000000000000 W _ZN1CC1IiEET_ 0000000000000000 W _ZN1CC2IiEET_ 0000000000000000 n _ZN1CC5IiEET_ 0000000000000000 T main