Hello Dave,
This is a very small patch for command sig.
I think it fixes the pointer problem.
 

I tested it with your procsig.c program, with additional
SIGUSR1 and SIGTERM signal-catchers to make sure they all
got referenced, and it works well:

  crash> for procsig sig
  PID: 4547   TASK: ffff8100366070c0  CPU: 1   COMMAND: "procsig"
  ...
  SIGQUEUE:  SIG      SIGINFO
              12  ffff81000397cab8
              10  ffff81000397c7d8
              15  ffff81000397c720
  crash>

Your fix is queued for the next release -- thanks!

Dave
 
 

--- crash-4.0-3.2/task.c 2006-08-23 17:09:48.000000000 +0200
+++ crash-4.0-3.2-patch/task.c 2006-08-25 00:03:48.000000000 +0200
@@ -5751,7 +5751,7 @@
  int translate, sig, sigpending;
  uint ti_flags;
  ulonglong sigset, blocked, mask;
- ulong signal_struct, kaddr, handler, flags, sigqueue, next;
+ ulong signal_struct, kaddr, handler, flags, sigqueue, sigqueue_save, next;
  ulong sighand_struct;
  long size;
  char *signal_buf, *uaddr;
@@ -5932,7 +5932,7 @@
                         mkstring(buf1, VADDR_PRLEN, CENTER|LJUST, "SIGINFO"));
  else
                 fprintf(fp, "SIGQUEUE: (empty)\n");
-
+ sigqueue_save = sigqueue;
         while (sigqueue) {
          readmem(sigqueue, KVADDR, signal_buf,
SIZE_OPTION(signal_queue, sigqueue), @@ -5949,7 +5949,8 @@
                  sig = INT(signal_buf + OFFSET(sigqueue_info) +
OFFSET(siginfo_si_signo));
   }
-
+  if (sigqueue_save == next)
+   break;
                 fprintf(fp, "           %3d  %lx\n",
                         sig, sigqueue +
    OFFSET_OPTION(signal_queue_info, sigqueue_info));

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