Avoid infinite loop if a mask is zero. (#309222, David Saxton)

2005-06-30  Matthias Clasen  <mclasen@redhat.com>

	* gdk/x11/gdkvisual-x11.c (gdk_visual_decompose_mask): Avoid
	infinite loop if a mask is zero.  (#309222, David Saxton)

ChangeLog

 2005-06-30  Matthias Clasen  <mclasen@redhat.com>
 
+	* gdk/x11/gdkvisual-x11.c (gdk_visual_decompose_mask): Avoid
+	infinite loop if a mask is zero.  (#309222, David Saxton)
+
 	* gtk/gtktreemodelfilter.c (gtk_tree_model_filter_fetch_child): 
 	Clarify the code, gcc 4 complains about predecrement in MAX().
 

ChangeLog.pre-2-10

 2005-06-30  Matthias Clasen  <mclasen@redhat.com>
 
+	* gdk/x11/gdkvisual-x11.c (gdk_visual_decompose_mask): Avoid
+	infinite loop if a mask is zero.  (#309222, David Saxton)
+
 	* gtk/gtktreemodelfilter.c (gtk_tree_model_filter_fetch_child): 
 	Clarify the code, gcc 4 complains about predecrement in MAX().
 

ChangeLog.pre-2-8

 2005-06-30  Matthias Clasen  <mclasen@redhat.com>
 
+	* gdk/x11/gdkvisual-x11.c (gdk_visual_decompose_mask): Avoid
+	infinite loop if a mask is zero.  (#309222, David Saxton)
+
 	* gtk/gtktreemodelfilter.c (gtk_tree_model_filter_fetch_child): 
 	Clarify the code, gcc 4 complains about predecrement in MAX().
 

gdk/x11/gdkvisual-x11.c

@@ -618,6 +618,12 @@ gdk_visual_decompose_mask (gulong  mask,
   *shift = 0;
   *prec = 0;
 
+  if (mask == 0)
+    {
+      g_warning ("Mask is 0 in visual. Server bug ?");
+      return;
+    }
+
   while (!(mask & 0x1))
     {
       (*shift)++;