Re: Compiling (development) Emacs with MSVC

[Stefan Monnier]

> After looking around and googling about this issue, the problem is
> trickier than what I thought at first.  Even my first explanation may
> not be complete.  Anyway, mixing enum and bit fields seems to be
> incompatible with portability.

IIUC gcc uses something like


   ENUM_BF(Lisp_Misc_Type) tag : 3;

where ENUM_BF(x) can either turn into "enum x" or "unsigned int"
depending on whether the compiler supports unsigned bit fields.
   

        Stefan