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Date:	Sun, 11 Feb 2018 17:16:52 -0800
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Thanks for the tip, but that didn't seem to have helped.

The registry setting CYGWIN_NOWINPATH=1 did not seem to affect the 
environment as seen in bash.

The variable seems to be set:

bash-4.4$ set
...snip...
COMSPEC='C:\WINDOWS\system32\cmd.exe'
CYGWIN_NOWINPATH=1
...snip

but the path variable contains still all the common system locations:

bash-4.4$ echo $PATH
/cygdrive/c/ProgramData/Oracle/Java/javapath:/cygdrive/c/Program Files 
(x86)/iis express/PHP/v5.3:/cygdrive/c/Program Files/Common Files/Mic
rosoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common 
Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Intel/
iCLS Client:/cygdrive/c/Program Files/Intel/iCLS 
Client:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:...snip...

Manually overriding the PATH variable in bash did not help (presumably 
because the offending DLL is already loaded):

bash-4.4$ export PATH=/usr/local/bin:/usr/bin:/bin
bash-4.4$ echo $PATH
/usr/local/bin:/usr/bin:/bin
bash-4.4$
bash-4.4$
bash-4.4$ ls
       0 [main] bash (11276) C:\Cygwin\bin\bash.exe: *** fatal error - 
cygheap base mismatch detected - 0x3C52410/0x36F2410.
This problem is probably due to using incompatible versions of the 
cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version 
*should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.


On 2/11/2018 2:42 AM, Doug Henderson wrote:
> On 11 February 2018 at 01:18, Andreas Schiffler  wrote:
>> Terminal (bash) fails with:
>>
>> Error: Could not fork child process: Resource temporarily unavailable (-1).
>> DLL rebasing may be required; see 'rebaseall / rebase --help'.
>>
> {snip}
>> bash-4.4$ ls
>>        1 [main] bash (6316) C:\Cygwin\bin\bash.exe: *** fatal error - cygheap
>> base mismatch detected - 0x3922410/0x3962410.
>> This problem is probably due to using incompatible versions of the cygwin
>> DLL.
> {snip}
>> I do have another version of the cygwin dll file on the system (Plex
>> installation) but that never caused any issues in the past.
> {snip}
>
>
> The method I use is to define CYGWIN_NOWINPATH=1 before I start
> cygwin. Actually, I set it in my Windows User environment so it is
> always set for my user. You can find the old windows path as the value
> of the environment variable ORIGINAL_PATH. Then, when necessary, I add
> only the previous path components that I require back in my
> .bash_profile. In my cases,My path looks like:
>
> $ echo $PATH
> /home/USER/bin:/usr/local/bin:/usr/bin:/cygdrive/c/Go/bin:/bin
>
> In your case, you may have Plex in your path. Make sure any Plex
> related directories are not in your cygwin path.
>
> A Google (or similar) search for "CYGWIN_NOWINPATH" will find many
> pages on cygwin.com and stackoverflow.com.
>
> HTH
>
> Doug
>


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