http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52755
Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |accepts-invalid Status|UNCONFIRMED |NEW Last reconfirmed| |2012-03-29 Summary|Error on use of implicitly |G++ misses ill-formed |deleted operator= |trivial implicitly-defined | |operator= in C++98 mode Ever Confirmed|0 |1 --- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> 2012-03-29 14:37:26 UTC --- clang is correct in this case; the testcase should be rejected in c++98 mode as well. operator= is defined as memberwise assignment even if it's trivial. So the C++98 mode behavior is the bug.