Don't fill regs window with a negative number of spaces

Function n_spaces can't handle negative values, and returns an invalid
pointer in this case.

gdb/ChangeLog:

2021-02-07  Hannes Domani  <ssbssa@yahoo.de>

	* tui/tui-regs.c (tui_data_item_window::rerender): Don't call
	n_spaces with a negative value.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index ce3ebfb6b3009f3ca2af437dd2928140809dfb3e..20f3541a6344c462b1fce97579085e436af8c583 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2021-02-07  Hannes Domani  <ssbssa@yahoo.de>
+
+       * tui/tui-regs.c (tui_data_item_window::rerender): Don't call
+       n_spaces with a negative value.
+
 2021-02-07  Hannes Domani  <ssbssa@yahoo.de>
 
        * tui/tui-regs.c (tui_data_window::display_registers_from):

diff --git a/gdb/tui/tui-regs.c b/gdb/tui/tui-regs.c
index 78cb209974670115426bfd9a2706a7074806d3b0..5caff7195efa776f238b3d390c30d72c31863308 100644 (file)
--- a/gdb/tui/tui-regs.c
+++ b/gdb/tui/tui-regs.c
@@ -492,7 +492,8 @@ tui_data_item_window::rerender (WINDOW *handle, int field_width)
     (void) wstandout (handle);
       
   mvwaddnstr (handle, y, x, content.c_str (), field_width - 1);
-  waddstr (handle, n_spaces (field_width - content.size ()));
+  if (content.size () < field_width)
+    waddstr (handle, n_spaces (field_width - content.size ()));
 
   if (highlight)
     /* We ignore the return value, casting it to void in order to avoid