Re: [PATCH 1/9] Define a structure for object IDs.

David Kastrup [off-list ref] writes:

It does not as far as I can see guarantee that a pointer to something
of the same type of its first member can be converted to a pointer to
a struct even if the struct only contains a member of such type.

This sentence doesn't make any sense.  If you have an object of struct
type then any pointer to the first member of the object can only be a
pointer to the one and same object.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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"And now for something completely different."

On 5 May 2014 19:23:06 GMT+10:00, Andreas Schwab [off-list ref] wrote:

David Kastrup [off-list ref] writes:

quoted

It does not as far as I can see guarantee that a pointer to something
of the same type of its first member can be converted to a pointer to
a struct even if the struct only contains a member of such type.

This sentence doesn't make any sense.  If you have an object of struct
type then any pointer to the first member of the object can only be a
pointer to the one and same object.

I think what David means is that a pointer to a wrapper
can be derefed into its internal, sure, but an object of
that internal type can't necessarily pretend to be a
wrapper.

That said, obviously I'm not David, so I could be wrong.
That's what I got from his statement, though.

Regards,
James Denholm.