------- Comment #4 from rguenth at gcc dot gnu dot org 2006-12-06 08:58 ------- With overflow we end up with Inf or -Inf, with underflow we end up with 0. (or even -0.?) - but underflow doesn't seem to require a diagnostic errno setting.
I don't see how this relates to PR23572 though. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29887
