* scroll.c (do_scrolling): Work around GCC bug 48228.

See <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48228>.

src/ChangeLog

+2011-03-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* scroll.c (do_scrolling): Work around GCC bug 48228.
+	See <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48228>.
+
 2011-03-21  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* frame.c (Fmodify_frame_parameters): Simplify loop counter.

src/scroll.c

@@ -245,8 +245,8 @@ do_scrolling (struct frame *frame, struct glyph_matrix *current_matrix, struct m
   int i, j, k;
 
   /* Set to 1 if we have set a terminal window with
-     set_terminal_window.  */
-  int terminal_window_p = 0;
+     set_terminal_window.  It's unsigned to work around GCC bug 48228.  */
+  unsigned int terminal_window_p = 0;
 
   /* A queue for line insertions to be done.  */
   struct queue { int count, pos; };