gdb/

	* cli/cli-decode.c (add_setshow_zuinteger_unlimited_cmd): New.
	Update comment to add_setshow_integer_cmd.
	* cli/cli-setshow.c (do_set_command): Handle case
	'var_zuinteger_unlimited'.
	(do_show_command): Likewise.
	* cli/cli-cmds.c (init_cmds): Call add_setshow_zuinteger_unlimited_cmd
	for command 'remotetimeout'.
	* command.h (enum var_types): New zuinteger_unlimited.  Update comment
	to var_integer.
	* source.c (_initialize_source): Call add_setshow_zuinteger_unlimited_cmd
	for command 'set listsize'.

gdb/doc/
	* gdb.texinfo (List): Describe the meaning of 0 and -1 in
	'set listsize'.

gdb/testsuite/
	* gdb.base/list.exp (set_listsize): Don't set arg to "unlimited"
	when it is less than 0.

1 files changed, 29 insertions, 1 deletions

diff --git a/gdb/cli/cli-setshow.c b/gdb/cli/cli-setshow.c
index 89e095a..9d8cb2e 100644
--- a/gdb/cli/cli-setshow.c
+++ b/gdb/cli/cli-setshow.c
@@ -379,6 +379,26 @@ do_set_command (char *arg, int from_tty, struct cmd_list_element *c)
 	  }
       }
       break;
+    case var_zuinteger_unlimited:
+      {
+	LONGEST val;
+
+	if (arg == NULL)
+	  error_no_arg (_("integer to set it to."));
+	val = parse_and_eval_long (arg);
+
+	if (val >= INT_MAX)
+	  error (_("integer %s out of range"), plongest (val));
+	else if (val < -1)
+	  error (_("only -1 is allowed to set as unlimited"));
+
+	if (*(int *) c->var != val)
+	  {
+	    *(int *) c->var = val;
+	    option_changed = 1;
+	  }
+      }
+      break;
     default:
       error (_("gdb internal error: bad var_type in do_setshow_command"));
     }
@@ -478,6 +498,7 @@ do_set_command (char *arg, int from_tty, struct cmd_list_element *c)
 	  break;
 	case var_integer:
 	case var_zinteger:
+	case var_zuinteger_unlimited:
 	  {
 	    char s[64];
 
@@ -562,7 +583,14 @@ do_show_command (char *arg, int from_tty, struct cmd_list_element *c)
       else
 	fprintf_filtered (stb, "%d", *(int *) c->var);
       break;
-
+    case var_zuinteger_unlimited:
+      {
+	if (*(int *) c->var == -1)
+	  fputs_filtered ("unlimited", stb);
+	else
+	  fprintf_filtered (stb, "%u", *(int *) c->var);
+      }
+      break;
     default:
       error (_("gdb internal error: bad var_type in do_show_command"));
     }