From: Dmitry Antipov <dmantipov@yandex.ru>
Date: Fri, 1 Jul 2016 15:45:24 +0000 (+0300)
Subject: Avoid yet another possible NULL pointer dereference found by GCC 6.1.1
X-Git-Tag: emacs-26.0.90~1840^2~137
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=d942c39c44dac1d73f9413979f754fa551f96cbb;p=emacs.git

Avoid yet another possible NULL pointer dereference found by GCC 6.1.1

* lwlib/lwlib.c (lw_get_all_values): Always check the value returned by
get_widget_info.
---

diff --git a/lwlib/lwlib.c b/lwlib/lwlib.c
index c68cf77c928..d1c5195dbf9 100644
--- a/lwlib/lwlib.c
+++ b/lwlib/lwlib.c
@@ -1042,11 +1042,13 @@ widget_value*
 lw_get_all_values (LWLIB_ID id)
 {
   widget_info* info = get_widget_info (id, False);
-  widget_value* val = info->val;
-  if (lw_get_some_values (id, val))
-    return val;
-  else
-    return NULL;
+  if (info)
+    {
+      widget_value* val = info->val;
+      if (lw_get_some_values (id, val))
+	return val;
+    }
+  return NULL;
 }
 
 /* internal function used by the library dependent implementation to get the