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Date: Thu, 26 Mar 2009 17:21:56 +0000
From: Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
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Subject: Re: Problems when moving Ubuntu -> Cygwin -SOLVED
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Mikael Normark wrote:
> I addedd __attrubute__((packed)) to both structures and that made it
> all work as supposed to. 

  Gah, ISHFRTT!  At least the use-specifically-sized-types advice is still good.

> Adding "packed" to the sample_pkg_t only
> saved 2 bytes, 

  What!?  That looks like a typo.  I think you mean 4 bytes.

> adding it to sample_t saved the rest down to 396 so
> obviously that structure is poorly aligned.

  No, it's just that it has more than one sample_t in it, and *each* sample_t
has four bytes of padding.  32 * 4 = 128 = the difference between the 396
bytes packed and the 524 bytes unpacked.  (SAMPLES_IN_PKG is 32, isn't it?)

    cheers,
      DaveK


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