Re: [bug-gawk] make check hangs

[arnold]

Hi.

Can you compile for debugging and trace this? In particular, the
code in io.c:two_way_open should handle a failure to acquire a pty.

I don't have an easy way to reproduce this on my Linux system.

Thanks,

Arnold

Curtis Doty <address@hidden> wrote:

> On a system temporarily out of ptys, `make check` won't pass or fail. But
> will hang indefinitely--even when ptys are freed up again.
>
> Can reproduce on macOS by opening up 127 terminals (until you can't open
> any more due to kern.tty.ptmx_max=127), and then run gawk tests.
>
> $ brew install gawk
> > ==> Using the sandbox
> > ==> Downloading https://ftpmirror.gnu.org/gawk/gawk-4.1.4.tar.xz
> > Already downloaded: /Users/curtis/Library/Caches/Homebrew/gawk-4.1.4.tar.xz
> > ==> ./configure --prefix=/usr/local/Cellar/gawk/4.1.4_1
> > --without-libsigsegv-prefix
> > ==> make
> > ==> make check
> > 123
> > ...hung here...even after freeing up some ptys...
> >
>
> Note the '123' output is spammed on the terminal and _pty1 file is empty.
>
> I know this is a corner case on a resource-starved build host. But still it
> should fail the test instead of hanging indefinitely.
>
> Not sure how to fix pty1.awk test or whether this is just an FYI instead of
> a fixable bug. Obviously, workaround is to free up some ptys and start over.
>
> ../C