[Bug go/63812] Compilation error due to a large floating point constant truncated to integer

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63812

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This might be an issue in mpfr and not GCC if I read GCC's code correctly. 
Depending on how 2.22 is read in as a floating point value.