-Wwrite-strings: Constify mi_cmd_argv_ftype's 'command' parameter

-Wwrite-strings flags this attempt to pass a literal to a "char *":

	mi_cmd_interpreter_exec ("-interpreter-exec", argv, 2);

Fix that by constifying mi_cmd_argv_ftype's 'command' parameter and
adjusting all MI commands.

gdb/ChangeLog:
2017-04-05  Pedro Alves  <palves@redhat.com>

	* mi/mi-cmd-break.c (mi_cmd_break_insert_1, mi_cmd_break_insert)
	(mi_cmd_dprintf_insert, mi_cmd_break_passcount)
	(mi_cmd_break_watch, mi_cmd_break_commands): Constify 'command'
	parameter.
	* mi/mi-cmd-catch.c (mi_cmd_catch_assert, mi_cmd_catch_exception)
	(mi_cmd_catch_load, mi_cmd_catch_unload): Constify cmd' parameter.
	* mi/mi-cmd-disas.c (mi_cmd_disassemble): Constify 'command'
	parameter.
	* mi/mi-cmd-env.c (mi_cmd_env_pwd, mi_cmd_env_cd, mi_cmd_env_path)
	(mi_cmd_env_dir, mi_cmd_inferior_tty_set, _cmd_inferior_tty_show)
	* mi/mi-cmd-file.c (mi_cmd_file_list_exec_source_file)
	(mi_cmd_file_list_exec_source_files)
	(mi_cmd_file_list_shared_libraries): Constify 'command' parameter.
	* mi/mi-cmd-info.c (mi_cmd_info_ada_exceptions)
	(mi_cmd_info_gdb_mi_command, mi_cmd_info_os): Constify 'command'
	parameter.
	* mi/mi-cmd-stack.c (mi_cmd_enable_frame_filters)
	(mi_cmd_stack_list_frames, mi_cmd_stack_info_depth)
	(mi_cmd_stack_list_locals, mi_cmd_stack_list_args)
	(mi_cmd_stack_list_variables, mi_cmd_stack_select_frame)
	(mi_cmd_stack_info_frame): Constify 'command' parameter.
	* mi/mi-cmd-target.c (mi_cmd_target_file_get)
	(mi_cmd_target_file_put, mi_cmd_target_file_delete): Constify
	'command' parameter.
	* mi/mi-cmd-var.c (mi_cmd_var_create, mi_cmd_var_delete)
	(mi_cmd_var_set_format, mi_cmd_var_set_visualizer)
	(mi_cmd_var_set_frozen, mi_cmd_var_show_format)
	(mi_cmd_var_info_num_children, mi_cmd_var_list_children)
	(mi_cmd_var_info_type, mi_cmd_var_info_path_expression)
	(mi_cmd_var_info_expression, mi_cmd_var_show_attributes)
	(mi_cmd_var_evaluate_expression, mi_cmd_var_assign)
	(mi_cmd_var_update, mi_cmd_enable_pretty_printing)
	(mi_cmd_var_set_update_range): Constify 'command' parameter.
	* mi/mi-cmds.h (mi_cmd_argv_ftype): Constify 'command' parameter.
	* mi/mi-interp.c (mi_cmd_interpreter_exec): Constify 'command'
	parameter.
	* mi/mi-main.c (mi_cmd_gdb_exit, mi_cmd_exec_next)
	(mi_cmd_exec_next_instruction, mi_cmd_exec_step)
	(mi_cmd_exec_step_instruction, mi_cmd_exec_finish)
	(mi_cmd_exec_return ,mi_cmd_exec_jump, mi_cmd_exec_continue)
	(mi_cmd_exec_interrupt, mi_cmd_exec_run, mi_cmd_target_detach)
	(mi_cmd_target_flash_erase, mi_cmd_thread_select)
	(mi_cmd_thread_list_ids, mi_cmd_thread_info)
	(mi_cmd_list_thread_groups, mi_cmd_data_list_register_names)
	(mi_cmd_data_list_changed_registers)
	(mi_cmd_data_write_register_values)
	(mi_cmd_data_evaluate_expression, mi_cmd_data_read_memory)
	(mi_cmd_data_read_memory_bytes, mi_cmd_data_write_memory)
	(mi_cmd_data_write_memory_bytes, mi_cmd_enable_timings)
	(mi_cmd_list_features, mi_cmd_list_target_features)
	(mi_cmd_add_inferior, mi_cmd_remove_inferior)
	(mi_cmd_trace_define_variable, mi_cmd_trace_list_variables)
	(mi_cmd_trace_find, mi_cmd_trace_save, mi_cmd_trace_start)
	(mi_cmd_trace_status, mi_cmd_trace_stop, mi_cmd_ada_task_info)
	(mi_cmd_trace_frame_collected): Constify 'command'
	parameter.
	* mi/mi-symbol-cmds.c (mi_cmd_symbol_list_lines): Constify
	'command' parameter.

1 files changed, 6 insertions, 6 deletions

diff --git a/gdb/mi/mi-cmd-env.c b/gdb/mi/mi-cmd-env.c
index dd13de4..a6347ee 100644
--- a/gdb/mi/mi-cmd-env.c
+++ b/gdb/mi/mi-cmd-env.c
@@ -65,7 +65,7 @@ env_execute_cli_command (const char *cmd, const char *args)
 /* Print working directory.  */
 
 void
-mi_cmd_env_pwd (char *command, char **argv, int argc)
+mi_cmd_env_pwd (const char *command, char **argv, int argc)
 {
   struct ui_out *uiout = current_uiout;
 
@@ -90,7 +90,7 @@ mi_cmd_env_pwd (char *command, char **argv, int argc)
 /* Change working directory.  */
 
 void
-mi_cmd_env_cd (char *command, char **argv, int argc)
+mi_cmd_env_cd (const char *command, char **argv, int argc)
 {
   if (argc == 0 || argc > 1)
     error (_("-environment-cd: Usage DIRECTORY"));
@@ -112,7 +112,7 @@ env_mod_path (char *dirname, char **which_path)
 /* Add one or more directories to start of executable search path.  */
 
 void
-mi_cmd_env_path (char *command, char **argv, int argc)
+mi_cmd_env_path (const char *command, char **argv, int argc)
 {
   struct ui_out *uiout = current_uiout;
   char *exec_path;
@@ -187,7 +187,7 @@ mi_cmd_env_path (char *command, char **argv, int argc)
 /* Add zero or more directories to the front of the source path.  */
 
 void
-mi_cmd_env_dir (char *command, char **argv, int argc)
+mi_cmd_env_dir (const char *command, char **argv, int argc)
 {
   struct ui_out *uiout = current_uiout;
   int i;
@@ -248,7 +248,7 @@ mi_cmd_env_dir (char *command, char **argv, int argc)
 /* Set the inferior terminal device name.  */
 
 void
-mi_cmd_inferior_tty_set (char *command, char **argv, int argc)
+mi_cmd_inferior_tty_set (const char *command, char **argv, int argc)
 {
   set_inferior_io_terminal (argv[0]);
 }
@@ -256,7 +256,7 @@ mi_cmd_inferior_tty_set (char *command, char **argv, int argc)
 /* Print the inferior terminal device name.  */
 
 void
-mi_cmd_inferior_tty_show (char *command, char **argv, int argc)
+mi_cmd_inferior_tty_show (const char *command, char **argv, int argc)
 {
   const char *inferior_io_terminal = get_inferior_io_terminal ();