gdb/

[binutils-gdb.git] / gdb / top.c

diff --git a/gdb/top.c b/gdb/top.c
index 8251d1b9d4c276a0fb4c1fb88dec0108410b366e..99fd5fff6bd3f9ffe1275f5da55869e2dc151087 100644 (file)
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -569,7 +569,7 @@ command_loop (void)
       if (window_hook && instream == stdin)
        (*window_hook) (instream, get_prompt ());
 
-      quit_flag = 0;
+      clear_quit_flag ();
       if (instream == stdin && stdin_is_tty)
        reinitialize_more_filter ();
       old_chain = make_cleanup (null_cleanup, 0);
@@ -710,7 +710,7 @@ show_write_history_p (struct ui_file *file, int from_tty,
                    value);
 }
 
-static int history_size;
+static unsigned int history_size;
 static void
 show_history_size (struct ui_file *file, int from_tty,
                   struct cmd_list_element *c, const char *value)
@@ -944,6 +944,7 @@ command_line_input (char *prompt_arg, int repeat, char *annotation_suffix)
   /* Control-C quits instantly if typed while in this loop
      since it should not wait until the user types a newline.  */
   immediate_quit++;
+  QUIT;
 #ifdef STOP_SIGNAL
   if (job_control)
     signal (STOP_SIGNAL, handle_stop_sig);
@@ -1379,7 +1380,7 @@ show_commands (char *args, int from_tty)
 
   /* The first command in the history which doesn't exist (i.e. one more
      than the number of the last command).  Relative to history_base.  */
-  int hist_len;
+  unsigned int hist_len;
 
   /* Print out some of the commands from the command history.  */
   /* First determine the length of the history list.  */
@@ -1444,15 +1445,16 @@ show_commands (char *args, int from_tty)
 static void
 set_history_size_command (char *args, int from_tty, struct cmd_list_element *c)
 {
-  if (history_size == INT_MAX)
-    unstifle_history ();
-  else if (history_size >= 0)
-    stifle_history (history_size);
-  else
+  /* The type of parameter in stifle_history is int, so values from INT_MAX up
+     mean 'unlimited'.  */
+  if (history_size >= INT_MAX)
     {
-      history_size = INT_MAX;
-      error (_("History size must be non-negative"));
+      /* Ensure that 'show history size' prints 'unlimited'.  */
+      history_size = UINT_MAX;
+      unstifle_history ();
     }
+  else
+    stifle_history (history_size);
 }
 
 void
@@ -1632,13 +1634,13 @@ Without an argument, saving is enabled."),
                           show_write_history_p,
                           &sethistlist, &showhistlist);
 
-  add_setshow_integer_cmd ("size", no_class, &history_size, _("\
+  add_setshow_uinteger_cmd ("size", no_class, &history_size, _("\
 Set the size of the command history,"), _("\
 Show the size of the command history,"), _("\
 ie. the number of previous commands to keep a record of."),
-                          set_history_size_command,
-                          show_history_size,
-                          &sethistlist, &showhistlist);
+                           set_history_size_command,
+                           show_history_size,
+                           &sethistlist, &showhistlist);
 
   add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\
 Set the filename in which to record the command history"), _("\