From: Noah Friedman <friedman@splode.com>
Date: Mon, 8 May 2017 23:24:56 +0000 (-0700)
Subject: (ybuffer-list): $alist must be ptr-unmasked at the end of the loop,
X-Git-Tag: emacs-26.0.90~521^2~166^2
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=c0d42853cd9b2da6d2d82f670260b62958ff6d21;p=emacs.git

(ybuffer-list): $alist must be ptr-unmasked at the end of the loop,
because $ptr is modified by ygetptr and we use $ptr immediately at the
beginning.
---

diff --git a/etc/emacs-buffer.gdb b/etc/emacs-buffer.gdb
index db58eeb8e94..053d7bd69c3 100644
--- a/etc/emacs-buffer.gdb
+++ b/etc/emacs-buffer.gdb
@@ -105,8 +105,6 @@ define ybuffer-list
   while $alist != $qnil
     set $this  = ((struct Lisp_Cons *) $ptr)->car
     set $alist = ((struct Lisp_Cons *) $ptr)->u.cdr
-    ygetptr $alist
-    set $alist = $ptr
 
     # Vbuffer_alist elts are pairs of the form (name . buffer)
     ygetptr $this
@@ -136,6 +134,8 @@ define ybuffer-list
     end
 
     set $i++
+    ygetptr $alist
+    set $alist = $ptr
   end
 end
 document ybuffer-list