Re: so-called pipe files (sh-np-*) do not get deleted when processes close.

[Michael Felt]

On 11/03/2021 22:27, Chet Ramey wrote:
> On 3/11/21 3:55 PM, Michael Felt (aixtools) wrote:
> > 
> >
> > Sent from my iPhone
> >
> > > On 11 Mar 2021, at 18:15, Chet Ramey <chet.ramey@case.edu> wrote:
> > >
> > > On 3/11/21 11:28 AM, Michael Felt wrote:
> > > > Hi,
> > > > Issue: AdoptOpenJDK build process makes bash calls in a particular 
> > > > way. An abbreviated (shorter pathnames) example is:
> > > > ```
> > > > bash-5.0$ /usr/bin/printf "Building targets 'product-images 
> > > > legacy-jre-image test-image' in configuration 
> > > > 'aix-ppc64-normal-server-release'\n" > >(/usr/bin/tee -a 
> > > > /home/aixtools/build.log) 2> >(/usr/bin/tee -a 
> > > > /home/aixtools/build.log >&2)
> > > > Building targets 'product-images legacy-jre-image test-image' in 
> > > > configuration 'aix-ppc64-normal-server-release'
> > >
> > > I believe this is fixed in bash-5.1.
> > Would it be difficult to give me a hint for 5.0. I could test further 
> > now i have a command that generates the issue.
>
> I can't reproduce it, but you can look at unlink_all_fifos() in bash-5.1.
> It's defined in subst.c and called in shell.c.
FYI: Been digging in bash-5.0.18 - learning...

Decided to give bash-5.1 a try. I doubt it is major, but I get as far as:

"../../../src/bash-5.1.0/lib/sh/tmpfile.c", line 289.11: 1506-068 (W) 
Operation between types "char*" and "int" is not allowed.
ld: 0711-317 ERROR: Undefined symbol: .mkdtemp
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more 
information.
make: 1254-004 The error code from the last command is 8.


Using AIX 5.3 TL12 and xlc/xlC-v11, and a largely stripped system Of 
other OSS).

I'll also give it a go on a more public server.

Michael

> > > Probably because the process substitution does not exit before the 
> > > shell does.
> > I was hoping that is what the wait routines were for. Also noticed 
> > that the second fifo never gets a pid.
>
> Bash doesn't wait for asynchronous processes before it exits unless 
> you use
> `wait'.

OpenPGP_0x722BFDB61F396FC2.asc
Description: OpenPGP public key

OpenPGP_signature
Description: OpenPGP digital signature