http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49152
--- Comment #23 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-03-31 00:34:58 UTC --- BTW, I think this example was mentioned some where already, but I cannot find it now. From http://clang.llvm.org/diagnostics.html manuel@gcc12:~$ cat t.cc struct a { virtual int bar(); }; struct foo : public virtual a { }; int test(foo *P) { return P->bar() + *P; } manuel@gcc12:~$ trunk/180166/install/bin/g++ -fsyntax-only ~/t.cc /home/manuel/t.cc: In function ‘void test(foo*)’: /home/manuel/t.cc:9:22: error: no match for ‘operator+’ in ‘(((a*)P) + ((sizetype)(*(long int*)(P->foo::<anonymous>.a::_vptr.a + 0xffffffffffffffffffffffffffffffe0u))))->a::bar() + * P’ manuel@gcc12:~$ ~/bin/clang -fsyntax-only ~/t.cc /home/manuel/t.cc:9:19: error: invalid operands to binary expression ('int' and 'foo') return P->bar() + *P; ~~~~~~~~ ^ ~~ 1 error generated.
