https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110145
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Weird, the 1e126 constant shouldn't be with excess precision because it is stored into a double field (using ctor). So perhaps the to_chars implementation actually relying somewhere on excess precision not happening?