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Re: [Xen-devel] [PATCH v4 03/11] public: xen.h: add definitions for UUID handling

Hello Jan

On 23.08.17 11:10, Jan Beulich wrote:
On 22.08.17 at 16:37, <volodymyr_babchuk@xxxxxxxx> wrote:
I can't see why you want to map UUID to a certain structure.

This is so that the type cannot mistakenly be passed to a function
taking unsigned char *, or be assigned to a variable of that type.
Right, I see the point there.

Please see our TYPE_SAFE() macro which we use to specifically
enclose certain scalar types in a structure to that they won't be
compatible with other types deriving from the same scalar base type.
I see. So what about

struct xen_uuid_t
     uint8_t a[16];


One can convert it to union with different representations (array, RFC4122 struct, etc) later if there will be need for this.

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