Re: Build failure for Emacs master

[Andy Moreton]

On Fri 15 Apr 2016, Eli Zaretskii wrote:

>> From: Andy Moreton <address@hidden>
>> Date: Fri, 15 Apr 2016 09:18:58 +0100
>> 
>> No, but changing the content of ldefs-boot.el can change the timing and
>> behaviour of the bootstrap-emacs.exe that is built from it. Whether the
>> observed bug is timing related or completely deterministic is not yet
>> known.
>
> I've just fixed on the emacs-25 branch a serious bug in the w32
> implementation of mmap_realloc.  The conditions under which the bug
> happened are very rare, but when it did happen, we would in effect
> lose a portion of buffer text, and instead get binary nulls.  Sounds
> familiar?
>
> So please try reproducing your problem after updating the repository
> from upstream, I hope that the problems will be gone.  (If you are
> tracking master, wait until ab849b7 is merged to it, or apply it
> manually.)

I've tried boostrapping a completely clean emacs-25 tree at commit
ab849b7, which was successful. Yuor patch looks good, so let's hope this
problem is gone.

    AndyM