Re: [GD-Windows] using typedef to create aligned types

[Daniel G. <dgl...@cr...>]

Javier Arevalo wrote:

> Also my understanding is that sizeof(*p) = (char*)(p+1) - (char*)(p) 
> by definition, so a class with an int is sizeof 4 and a class with an 
> int and an alignment of 16 must be sizeof 16.
>
> Save typos, that should give an idea of what's going on.

Well then in the typedef __declspec(align(16)) Fred AlignedFred, VC 7.1 
is broken.  It passes through a size of 40 bytes for a new 
AlignedFred[10].  Contrast with class __declspec(align(16)) AlignedFred, 
new AlignedFred[10] passes in a size of 160 bytes.

Last time I looked at the implementation for operator new in the CRT it 
called malloc.  I don't see how the declspec is being honoured in such a 
case.

cheers
DanG

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Dan Glastonbury, Senior Programmer, The Creative Assembly
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