freebsd-listen at fabiankeil.de
Wed Mar 14 19:12:26 UTC 2007
Wojciech Puchar <wojtek at tensor.gdynia.pl> wrote:
> > Regarding most (or many) of the port changes--say, upgrading
> > foo-2.1.9_5 to foo-2.1.9_6, if the upgrade could be done by
> > downloading a binary diff file, could the resulting
> > /usr/local/bin/foo-2.1.9_6 be achieved by downloading a
> > relatively small binary patch? Seems to me that smaller scale
> > upgrades could be done this way in preference to re-compiling
> > ports or downloading entire pacakes. --Same would go for any
> > dependencies.
> > Why is this a bad idea!
> because if you change say 5 lines in program source of 1MB binary
> program, resulting new 1MB binary will be MUCH different
> byte-by-byte mostly because of address shifting so lots of pointers to
> code (or data, rodata) will change. so diff will be big.
Is that a guess or did you actually test and verify this?
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