On Thu, 2018-09-27 at 16:28 -0600, Jason Gunthorpe wrote: > On Thu, Sep 27, 2018 at 01:34:16PM -0700, Nick Desaulniers wrote: > > > > Neither ib_qp_create_flags nor mlx4_ib_qp_flags have negative values, is > > > signedness necessary? > > > > enums are by default restricted to the range of ints. > > That's not quite right, the compiler sizes the enum to be able to fit > the largest value contained within, today that is int, but if we added > 1<<31, then it would become larger.
Hi Jason, Are you perhaps confusing C and C++? For C++, an enumeration whose underlying type is not fixed, the underlying type is an integral type that can represent all the enumerator values defined in the enumeration. For C however I think that enumeration values are restricted to what fits in an int. Bart.
