http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47642
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-02-12 12:06:01 UTC --- Created attachment 23313 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23313 a.c I'm attaching a few testcases I've used (well, they aren't suitable for gcc testsuite because most of them doesn't verify the results, it is just for eyeballing results and various things depend on how much dumbed down the implementation needs to be due to target limitations). In this testcase (and others) of course the tests with Q modifier used in *printf family function other than quadmath_snprintf are meant to actually work only on recent glibcs.