Update our idea of our terminal's dimensions even outside of TUI

When in the CLI, GDB's "width" and "height" variables are not kept in sync
when the underlying terminal gets resized.

This patch fixes this issue by making sure sure to update GDB's "width"
and "height" variables in the !tui_active case of our SIGWINCH handler.

gdb/ChangeLog:

	* tui/tui-win.c (tui_sigwinch_handler): Remove now-stale comment.
	(tui_sigwinch_handler): Still update our idea of
	the terminal's width and height even when TUI is not active.

1 files changed, 18 insertions, 13 deletions

diff --git a/gdb/tui/tui-win.c b/gdb/tui/tui-win.c
index 6830977..683c0ed 100644
--- a/gdb/tui/tui-win.c
+++ b/gdb/tui/tui-win.c
@@ -836,12 +836,6 @@ static struct async_signal_handler *tui_sigwinch_token;
 static void
 tui_sigwinch_handler (int signal)
 {
-  /* Set win_resized to TRUE and asynchronously invoke our resize callback.  If
-     the callback is invoked while TUI is active then it ought to successfully
-     resize the screen, resetting win_resized to FALSE.  Of course, if the
-     callback is invoked while TUI is inactive then it will do nothing; in that
-     case, win_resized will remain TRUE until we get a chance to synchronously
-     resize the screen from tui_enable().  */
   mark_async_signal_handler (tui_sigwinch_token);
   tui_set_win_resized_to (TRUE);
 }
@@ -850,15 +844,26 @@ tui_sigwinch_handler (int signal)
 static void
 tui_async_resize_screen (gdb_client_data arg)
 {
+  rl_resize_terminal ();
+
   if (!tui_active)
-    return;
+    {
+      int screen_height, screen_width;
 
-  rl_resize_terminal ();
-  tui_resize_all ();
-  tui_refresh_all_win ();
-  tui_update_gdb_sizes ();
-  tui_set_win_resized_to (FALSE);
-  tui_redisplay_readline ();
+      rl_get_screen_size (&screen_height, &screen_width);
+      set_screen_width_and_height (screen_width, screen_height);
+
+      /* win_resized is left set so that the next call to tui_enable()
+	 resizes the TUI windows.  */
+    }
+  else
+    {
+      tui_resize_all ();
+      tui_refresh_all_win ();
+      tui_update_gdb_sizes ();
+      tui_set_win_resized_to (FALSE);
+      tui_redisplay_readline ();
+    }
 }
 #endif