https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89727
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |wrong-code Status|UNCONFIRMED |NEW Last reconfirmed| |2019-03-15 Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- .original shows the difference: struct B b; <<cleanup_point <<< Unknown tree: expr_stmt (void) std::basic_ostream<char>::operator<< ((struct __ostream_type *) std::basic_ostream<char>::operator<< ((struct basic_ostream *) std::basic_ostream<char>::operator<< (&cout, a.i), endl), flush) >>>>>; <<cleanup_point <<< Unknown tree: expr_stmt (void) std::basic_ostream<char>::operator<< ((struct basic_ostream *) std::basic_ostream<char>::operator<< (&cout, _ZTWN1B1aE ()->i), endl) >>>>>; <<cleanup_point <<< Unknown tree: expr_stmt (void) std::basic_ostream<char>::operator<< ((struct basic_ostream *) std::basic_ostream<char>::operator<< (&cout, a.i), endl) >>>>>; note how we perform the access differently for B::a.i vs. b.a.i, unexpected to me.