http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58625
Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2013-10-04 Ever confirmed|0 |1 --- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> --- Well, now I see this can be certainly a correctness issue, for eg very small negative long doubles. Thus I think we should certainly do the change anyway for 4.9. For c_std I'm afraid we have to add overloads (I think, essentially copy over the corresponding bits of c_global without constexpr). Can you send a patch to the libstdc++-v3 mailing list? And, please, double check isnan and isinf. Thanks!