On 09 Mar 2012, at 22:26, Mark Morgan Lloyd wrote:
> Thanks Jonas, I don't think I need to do it but I thought it was a fair
> question: better safe than sorry.
>
> OK, so hopefully I can get away with another. I'm looking at a program
> written in Delphi, which reads a file containing the image of an IBM
> mainframe tape. This has a record:
>
> Type TAWSHeader=Record
> ThisSize: Word;
> ..
If you want a record to have a predictable layout, always either
a) use {$packrecords c} if it's a translation of a C struct, or
b) declare it as "packed"
In other cases, you can (and will) have problems across different platforms or
even compiler versions.
> but is there any way to define something like an endianness-correcting type,
> i.e.:
>
> Type TAWSHeader=Record
> ThisSize: WordLE;
> ..
>
> where by the time ThisSize is accessed any disparity has been corrected?
No.
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