run-program issues with OpenJDK 11

[Mark Evenson]

> On Jul 22, 2020, at 21:03, Eric Timmons <etimmons at mit.edu> wrote:
> 
> I just tested this on a fresh Debian Buster VM (to rule out anything
> weird from my environment) with openjdk-11-jdk-headless and ABCL 1.7.1
> and ended up with the same results:
> 
> + The prebuilt jar is unable to use sys:run-program at all.
> 
> + When built from source, sys:run-program works, but sys:process-pid
>  does not.
> 
> lisp-implementation-version:
> 
> "1.7.1"
> "OpenJDK_64-Bit_Server_VM-Debian-11.0.7+10-post-Debian-3deb10u1"
> "amd64-Linux-4.19.0.9-amd64"
> 
> Mark: I just realized that your use of swank-backend:getpid doesn't
> match what I was trying to do. Swank's getpid gets the PID of the
> current process, but I was trying to get the PID of a process started
> with (sys:run-program ... :wait nil) using sys:process-pid.
> 
> -Eric
> 

Finally able to confirm the failure of SYS:RUN-PROGRAM when SLIME is *not* used.  

Debugging further…

<https://abcl.org/trac/ticket/470>

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