constify command prefix

[external/binutils.git] / gdb / cli / cli-setshow.c

diff --git a/gdb/cli/cli-setshow.c b/gdb/cli/cli-setshow.c
index d14d361..0f936a4 100644 (file)
--- a/gdb/cli/cli-setshow.c
+++ b/gdb/cli/cli-setshow.c
@@ -148,7 +148,7 @@ is_unlimited_literal (const char *arg)
    other command).  C is the command list element for the command.  */
 
 void
-do_set_command (char *arg, int from_tty, struct cmd_list_element *c)
+do_set_command (const char *arg, int from_tty, struct cmd_list_element *c)
 {
   /* A flag to indicate the option is changed or not.  */
   int option_changed = 0;
@@ -233,13 +233,15 @@ do_set_command (char *arg, int from_tty, struct cmd_list_element *c)
        if (arg != NULL)
          {
            /* Clear trailing whitespace of filename.  */
-           char *ptr = arg + strlen (arg) - 1;
+           const char *ptr = arg + strlen (arg) - 1;
+           char *copy;
 
            while (ptr >= arg && (*ptr == ' ' || *ptr == '\t'))
              ptr--;
-           *(ptr + 1) = '\0';
+           copy = xstrndup (arg, ptr + 1 - arg);
 
-           val = tilde_expand (arg);
+           val = tilde_expand (copy);
+           xfree (copy);
          }
        else
          val = xstrdup ("");
@@ -564,7 +566,7 @@ do_set_command (char *arg, int from_tty, struct cmd_list_element *c)
    other command).  C is the command list element for the command.  */
 
 void
-do_show_command (char *arg, int from_tty, struct cmd_list_element *c)
+do_show_command (const char *arg, int from_tty, struct cmd_list_element *c)
 {
   struct ui_out *uiout = current_uiout;
   struct cleanup *old_chain;
@@ -668,7 +670,7 @@ do_show_command (char *arg, int from_tty, struct cmd_list_element *c)
 /* Show all the settings in a list of show commands.  */
 
 void
-cmd_show_list (struct cmd_list_element *list, int from_tty, char *prefix)
+cmd_show_list (struct cmd_list_element *list, int from_tty, const char *prefix)
 {
   struct cleanup *showlist_chain;
   struct ui_out *uiout = current_uiout;