When running apps in the background by “xxx &” and try “jobs” or “ps”
sometimes, it will crash.
It is caused by some TT.jobs arguments freed.
static void run_lines(void)
…
// Three cases: 1) background & 2) pipeline | 3) last process in pipeline ;
// If we ran a process and didn't pipe output, background or wait for exit
if (pplist && TT.ff->blk->pout == -1) {
if (ctl && !strcmp(ctl, "&")) {
if (!TT.jobs.c) TT.jobcnt = 0;
pplist->job = ++TT.jobcnt;
arg_add(&TT.jobs, (void *)pplist);
--> pplist is freed later...
if (TT.options&FLAG_i) dprintf(2, "[%u] %u\n", pplist->job,pplist->pid);
} else {
toys.exitval = wait_pipeline(pplist);
llist_traverse(pplist, (void *)free_process);
}
pplist = 0;
}
Then, in show_job(), it will use random points.
Mingliang
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