On Sun, 24 May 2009, Andrew Haley wrote:

> Of course we have to fix the assembler output.  For ant two declarations
> a and b, &a != &b, even when a is a zero-length array.  So, you have to
> allocate at least one byte.

I don't think this is necessarily part of the semantics for the GNU 
extensions of zero-length arrays and empty structures.  Certainly when 
they are used in the middle of a structure they are not expected to take 
up any space (so their address may be the same as that of the next 
member).

-- 
Joseph S. Myers
jos...@codesourcery.com

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