http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48797
--- Comment #8 from Rich Felker <bugdal at aerifal dot cx> 2011-04-28 03:45:39 UTC --- Thank you for the quick response. It looks like pcc supports the gcc-style builtins (and defines __GNUC__ to be 4), whereas tinycc does not define __GNUC__ at all. I think __GNUC__>=3 is a reasonable test then.
