Andreas Schwab <schwab@suse.de> schrieb am Mi., 23. März 2016 um 09:03 Uhr:

Philipp Stephani <p.stephani2@gmail.com> writes:

> Unfortunately there are still ~1000 differing bytes left.
> Is it possible to determine the source address in temacs/bootstrap-emacs
> from the position in the ,bss segment?

Set a watchpoint.

Thanks, I've used that (and 'info symbol') to search for a couple more sources of nondeterminism. So far I've found:

- various jmp_buf objects; these can most likely be zeroed out before dumping

- gl_state; could also be zeroed

- consing_since_gc; Fdump_emacs could just call Fgarbage_collect to reset it (though I'm wondering why this difference exists; AFAIK the garbage collector should be pretty deterministic)