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From: "Rockefeller, Harry" <Harry DOT Rockefeller AT flightsafety DOT com>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Date: Wed, 20 May 2015 10:13:38 -0400
Subject: RE: Doing vfork: resource temporarily unavailable
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>-----Original Message-----
>From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com] On Behalf Of Jim Reisert AD1C
>Sent: Wednesday, May 20, 2015 8:54 AM
>To: cygwin AT cygwin DOT com
>Subject: Re: Doing vfork: resource temporarily unavailable
>
>> This indicates that you need to run a full rebase
>> (https://www.cygwin.com/faq.html#faq.using.fixing-fork-failures).  The
>> simplest way to do this is to run '/usr/bin/rebase-trigger full', then
>> stop all Cygwin processes and services, and then run setup-x86.exe.
>> The _autorebase postinstall script will then take care of the rebase.
>>
>> I have occasionally found it necessary to reboot the computer before
>> doing this.
>
>This doesn't always work for me.  In fact, I just did this - set the trigger, rebooted,
>then ran Cygwin Setup.  The first time I started Emacs, no problem (only one dbus warning).
>The very next time, this:
>
>      0 [main] emacs-X11 2512 child_info_fork::abort:
>C:\Cygwin\bin\cygMagickCore-6.Q16-2.dll: Loaded to different address:
>parent(0x1710000) != child(0x1920000)

Recently I spent about an hour running numerous rebaseall commands interspersed with
at least one rerun of setup-x86 and 3 reboots before my emacs vfork errors went away.
I don't know if it was the third reboot or something else such as deleting some of my
biggest emacs buffers ( I use desktop-save-mode) that finally cured the problem.
If there is a "bottom" to this problem I would be willing to participate as a tester.

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