Re: bzr problem

[Achim Gratz <Stromeko@nexgo.de>]

Katsumi Yamaoka writes:
> BTW, when I run `bzr update' for the Emacs trunk, it shows a warning
> that varies like:
>
> 0 [main] python2.7 1300 child_info_fork::abort: unable to remap\
> _ARC4.dll to same address as parent (0xBE0000) - try running rebaseall
> 0 [main] python2.7 4180 child_info_fork::abort: address space needed by\
>  '_socket.dll' (0x860000) is already occupied
> 0 [main] python2.7 8072 child_info_fork::abort: address space needed by\
>  'operator.dll' (0x3D0000) is already occupied

What apparently happens is that the DLL gets originally loaded onto a
low address, presumably due to something intercepting the loader, then
when the process forks that address is already in use so the DLL can't
be mapped to that address in the process image.  This has all the
fingerprints of a "real-time" / behavioural virus scanner, so you might
want to investigate whether you can exclude the Cygwin install folder
from this.  If that's not possible to set up, you can sometimes move the
Cygwin installation into a directory tree that already is excluded
(often %PROGRAMFILES% is treated differently than other tress, etc.).

> rebaseall_log.txt shows that those DLLs were rebased into:
>
> /usr/lib/python2.7/site-packages/Crypto/Cipher/_ARC4.dll:\
>  new base = 36df0000, new size = 10000
> /usr/lib/python2.7/lib-dynload/_socket.dll:\
>  new base = 37170000, new size = 20000
> /usr/lib/python2.7/lib-dynload/operator.dll:\
>  new base = 36f90000, new size = 10000
>
> As for "_ARC4.dll", how does "36df0000" mean "0xBE0000"?

Not at all: the DLL simply doesn't get loaded where it has been rebased
to.


Regards,
Achim.
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