https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96387
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- You are changing the ABI of the GMP library and not recompiling all of the software to use the new struct. THIS Is invalid as GCC uses GMP internally (so does MPFR) and you changed the ABI so you get what you get; undefined behavior since the ABIs are not compatiable.