[src/trunk]: src/sys/kern Process the signal now, otherwise calling issignal(...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f3ebf19bcabb
branches:  trunk
changeset: 769077:f3ebf19bcabb
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Aug 30 22:45:55 2011 +0000

description:
Process the signal now, otherwise calling issignal() and ignoring
the return will lose the signal if it came from the debugger
(issignal() clears p->p_xstat)

diffstat:

 sys/kern/sys_process.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (36 lines):

diff -r 415992c0c3f9 -r f3ebf19bcabb sys/kern/sys_process.c
--- a/sys/kern/sys_process.c    Tue Aug 30 22:23:06 2011 +0000
+++ b/sys/kern/sys_process.c    Tue Aug 30 22:45:55 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sys_process.c,v 1.158 2011/08/29 17:31:50 jmcneill Exp $       */
+/*     $NetBSD: sys_process.c,v 1.159 2011/08/30 22:45:55 christos Exp $       */
 
 /*-
  * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -118,7 +118,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_process.c,v 1.158 2011/08/29 17:31:50 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_process.c,v 1.159 2011/08/30 22:45:55 christos Exp $");
 
 #include "opt_ptrace.h"
 #include "opt_ktrace.h"
@@ -1051,6 +1051,7 @@
 {
        struct lwp *l = curlwp;
        struct proc *p = l->l_proc, *pp;
+       int sig;
 
        mutex_enter(proc_lock);
        mutex_enter(p->p_lock);
@@ -1072,7 +1073,8 @@
         * from userret().
         */
        KERNEL_UNLOCK_ALL(l, &l->l_biglocks);
-       (void)issignal(l);
+       if ((sig = issignal(l)) != 0)
+               postsig(sig);
        mutex_exit(p->p_lock);
        KERNEL_LOCK(l->l_biglocks, l);
 }