[Bug c++/50593] [C++0x] improve __attribute__((format(printf)))

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50593

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-15 21:16:47 UTC ---
Seems like it's a matter of changing check_format_arg to call a more general
front-end interface than decl_constant_value, one that could accept an
arbitrary expression rather than just a decl, and would call
maybe_constant_value.