https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69751
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |mpolacek at gcc dot gnu.org Resolution|--- |INVALID --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- This is invalid; calling abs() on an unsigned value does not make sense. Cf. http://cplusplus.github.io/LWG/lwg-active.html#2192