login shell binary outside of /bin

[Basin Ilya via Cygwin]

Hi
I compiled bash 5.1 and installed it to /usr/local

If I try to use it as a login shell it fails to launch programs while sourcing 
/etc/profile. If I copy the binary to /bin it works. If after successful login 
I launch `/usr/local/bin/bash5 -login` again it works. If I copy the official 
bash4 to /usr/local/bin and try to do the initial login it fails just like 
bash5.

Bad:

    C:\cygwin\bin>C:\cygwin\usr\local\bin\bash5 -login
          0 [main] bash5 674 dofork: child -1 - forked process 20540 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: retry: Resource temporarily unavailable
    1023667 [main] bash5 674 dofork: child -1 - forked process 35708 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: retry: Resource temporarily unavailable
    3053548 [main] bash5 674 dofork: child -1 - forked process 28664 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: retry: Resource temporarily unavailable
    7078151 [main] bash5 674 dofork: child -1 - forked process 59624 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: retry: Resource temporarily unavailable
    15108745 [main] bash5 674 dofork: child -1 - forked process 51456 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: Resource temporarily unavailable
    bash5-5.1$ /usr/bin/hostname
    23539687 [main] bash5 674 dofork: child -1 - forked process 55544 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: retry: Resource temporarily unavailable
    24564456 [main] bash5 674 dofork: child -1 - forked process 67084 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: retry: Resource temporarily unavailable
    26592885 [main] bash5 674 dofork: child -1 - forked process 16288 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: retry: Resource temporarily unavailable
    30618645 [main] bash5 674 dofork: child -1 - forked process 28416 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: retry: Resource temporarily unavailable
    38648818 [main] bash5 674 dofork: child -1 - forked process 26696 died 
unexpectedly, retry 0, exit code 0xC0000135, errno 11
    bash5: fork: Resource temporarily unavailable
    bash5-5.1$ echo "PATH=$PATH"
    PATH=/usr/local/bin:/usr/bin:/cygdrive/c/Program 
Files/BellSoft/LibericaJRE-8/bin:/cygdrive/c/Program 
Files/Documentum/Shared:/cygacl/v/goodfs/bin:/cygdrive/c/WINDOWS/system32:/cygdrive/c/WINDOWS:/cygdrive/c/WINDOWS/System32/Wbem:/cygdrive/c/WINDOWS/System32/WindowsPowerShell/v1.0:/cygdrive/c/WINDOWS/System32/OpenSSH:/cygdrive/c/Program
 Files (x86)/Intel/Intel(R) Management Engine 
Components/DAL:/cygdrive/c/Program Files/Intel/Intel(R) Management Engine 
Components/DAL:/cygdrive/c/Program 
Files/nodejs:/cygdrive/c/progs/apache-maven-3/bin:/cygdrive/c/Program 
Files/Cloud Foundry:/cygdrive/c/progs/git-for-windows/cmd:/cygdrive/c/Program 
Files/Docker/Docker/resources/bin:/cygdrive/c/ProgramData/DockerDesktop/version-bin:/cygdrive/c/Users/basin/AppData/Local/Microsoft/WindowsApps:/cygdrive/c/Users/basin/AppData/Roaming/npm
    bash5-5.1$ pwd
    /home/basin
    bash5-5.1$

Good:

    C:\cygwin\bin>C:\cygwin\bin\bash5 -login
    
    basin@basin ~
    $ /usr/bin/hostname
    basin
    
    basin@basin ~
    $ echo "PATH=$PATH"
    
PATH=/home/basin/.local/bin:/opt/wrappers/bin:/home/basin/perl5/bin:/usr/local/bin:/usr/bin:/cygdrive/c/Program
 Files/BellSoft/LibericaJRE-8/bin:/cygdrive/c/Program 
Files/Documentum/Shared:/cygacl/v/goodfs/bin:/cygdrive/c/WINDOWS/system32:/cygdrive/c/WINDOWS:/cygdrive/c/WINDOWS/System32/Wbem:/cygdrive/c/WINDOWS/System32/WindowsPowerShell/v1.0:/cygdrive/c/WINDOWS/System32/OpenSSH:/cygdrive/c/Program
 Files (x86)/Intel/Intel(R) Management Engine 
Components/DAL:/cygdrive/c/Program Files/Intel/Intel(R) Management Engine 
Components/DAL:/cygdrive/c/Program 
Files/nodejs:/cygdrive/c/progs/apache-maven-3/bin:/cygdrive/c/Program 
Files/Cloud Foundry:/cygdrive/c/progs/git-for-windows/cmd:/cygdrive/c/Program 
Files/Docker/Docker/resources/bin:/cygdrive/c/ProgramData/DockerDesktop/version-bin:/cygdrive/c/Users/basin/AppData/Local/Microsoft/WindowsApps:/cygdrive/c/Users/basin/AppData/Roaming/npm
    
    basin@basin ~
    $ pwd
    /home/basin
    
    basin@basin ~



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