[Bug c/37743] Bogus printf format warning with __builtin_bswap32.

[joseph at codesourcery dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37743

--- Comment #11 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Yes, we could do something like that (but I also think it's time to put 
the targets without this type information on the deprecation list and warn 
their maintainers that the target support will be removed in the absence 
of this information being added soon).