http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54755
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-09-29 19:06:09 UTC --- I haven't bothered analysing the code, but Comeau and Clang agree it's ambiguous, so GCC is probably right.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54755
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-09-29 19:06:09 UTC --- I haven't bothered analysing the code, but Comeau and Clang agree it's ambiguous, so GCC is probably right.