https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88126
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |diagnostic --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- -Wconversion will warn about some things but it might not warn when the sizes are the same in the case of ILP32 where unsigned int and unsigned long are the same size; it will warn on LP64 targets though (not LLP64 targets; like windows).