Re: Crash on jobstates since workers/49783 (commit 6a8aa2a)

[Bart Schaefer <schaefer@brasslantern.com>]

On Mon, Mar 28, 2022 at 12:53 PM Peter Stephenson
<p.w.stephenson@ntlworld.com> wrote:
>
> When I simply print
> jobstates and it does crash I'm seeing what looks like the process
> number of the subshell process appear right before the crash (i.e. it's
> typically one more than the sleep that was just started).

This?

diff --git a/Src/jobs.c b/Src/jobs.c
index 18e43f03c..83ffdbde5 100644
--- a/Src/jobs.c
+++ b/Src/jobs.c
@@ -1718,6 +1718,12 @@ clearjobtab(int monitor)
        /* Don't report any job we're part of */
        if (thisjob != -1 && thisjob < oldmaxjob)
            memset(oldjobtab+thisjob, 0, sizeof(struct job));
+
+       /* oldmaxjob is now the size of the table, but outside
+        * this function, it's used as a job number, which must
+        * be the largest index available in the table.
+        */
+       --oldmaxjob;
     }