[fpc-pascal] Typinfo incompatibilities between FPC and Delphi

Sven Barth pascaldragon at googlemail.com
Mon Jun 9 11:45:43 CEST 2014

On 31.05.2014 15:45, Marco van de Voort wrote:
> In our previous episode, Maciej Izak said:
>> By Barry Kelly in comment :) :
>> http://stackoverflow.com/questions/3443097/what-is-the-identity-pointer-before-a-ttypeinfo-there-for
>> "all typeinfo fixups - pointers from one blob of typeinfo to another - are
>> of type PPTypeInfo, not PTypeInfo, to handle the dynamic linking case. In
>> the case of static linkage, there needs to be an intermediate pointer for
>> the convention to work, and part of the typeinfo itself makes as much sense
>> as any. That is to say, it's not there for the linker; it's there because
>> of the convention, and the convention is there because of dynamic linking,
>> which is done the way it is to maximize potential for page sharing."
> Thanks, I added it to the wiki:
> http://wiki.freepascal.org/packages#Details

I have the feeling that the introduction of dynamic packages in FPC 
*will* require us to change our current RTTI from PTypeInfo to 
PPTypeInfo... :/


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