[fpc-devel] CMem allocator memory alignment experiment

Karoly Balogh (Charlie/SGR) charlie at scenergy.dfmk.hu
Wed Nov 19 12:32:43 CET 2014


On Wed, 19 Nov 2014, Jonas Maebe wrote:

> > Since the RTL's allocator is documented to align to 16 bytes
> Where?

Ok, that's actually a very good question. :) I didn't find it anywhere,
except some earlier ML/forum posts revealed by Google.

However, in practice it still seems to align to 16 bytes, and I asked
several people (compiler, RTL, Lazarus developers) during the FPC/Lazraus
conference last weekend in the Netherlands and the consensus was, it's
known the heap manager aligns to 16 bytes, it's designed to do that, and
in general it's a feature, which should be documented if it's not.

But yeah, everyone appended "but better ask Jonas". :)


More information about the fpc-devel mailing list