[fpc-pascal] Memory alignment with FPC

[Jonas Maebe]

On 10 Oct 2012, at 12:02, dhkblaszyk at zeelandnet.nl wrote:

> Does FPC ensure the same memory alignment for records and objects
> over different platforms?

No, alignment is defined by the platform ABI.

> If I want to be sure to have the same
> alignment must I use packed (with possibly some aligning assigned)
> records instead in combination with data types that are guaranteed  
> to be
> of the same size over the different platforms (eg byte, word,  
> single) ?

Yes.

> When
> memory is alligned (either with {$PACKRECORDS N} or unpacked, are the
> padding bytes quaranteed to be #0 or are they undefined?

They are undefined.


Jonas
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