* DevNotes: Add entry cgf-000004.

* pinfo.cc (pinfo::init): Reuse shared memory if the state is marked with
PID_REAPED.
* spawn.cc (child_info_spawn::worker): Don't duplicate myself_pinfo into
non-cygwin child.
* fork.cc (frok::parent): Improve error output.

winsup/cygwin/fork.cc

@@ -393,8 +393,8 @@ frok::parent (volatile char * volatile stack_here)
       /* Wait for subproc to initialize itself. */
       if (!ch.sync (pi.dwProcessId, hchild, FORK_WAIT_TIMEOUT))
 	{
-	  if (!error ("forked process died unexpectedly, retry %d, exit code %d",
-		      ch.retry, ch.exit_code))
+	  if (!error ("forked process %u died unexpectedly, retry %d, exit code %d",
+		      pi.dwProcessId, ch.retry, ch.exit_code))
 	    continue;
 	  this_errno = EAGAIN;
 	  goto cleanup;