* ui-file.h (ui_file_xstrdup): Mention that the length argument

may be NULL.
	* ui-file.c (ui_file_xstrdup): Don't dereference LENGTH if it is
	NULL.
	* aix-thread.c (aix_thread_extra_thread_info): Pass NULL as length
	parameter to ui_file_xstrdup.
	* arm-tdep.c (_initialize_arm_tdep): Ditto.
	* infrun.c (print_target_wait_results): Ditto.
	* language.c (add_language): Ditto.
	* linespec.c (cplusplus_error): Ditto.
	* remote.c (escape_buffer): Ditto.
	* typeprint.c (type_to_string): Ditto.
	* utils.c (error_stream): Ditto.
	* varobj.c (value_get_print_value): Ditto.
	* xtensa-tdep.c (xtensa_verify_config): Replace `dummy' local with
	`length' local.  Pass it to ui_file_xstrdup, and avoid an strlen
	call.
	* gdbarch.sh (verify_gdbarch): Ditto.
	* gdbarch.c: Regenerate.
	* cli/cli-setshow.c (do_setshow_command): Pass NULL as length
	parameter to ui_file_xstrdup.
	* python/python-frame.c (frapy_str): Ditto.
	* python/python-type.c (typy_str): Use the length local instead of
	calling strlen.
	* python/python-value.c (valpy_str): Pass NULL as length parameter
	to ui_file_xstrdup.

gdb/python/python-frame.c

@@ -80,13 +80,12 @@ static PyObject *
 frapy_str (PyObject *self)
 {
   char *s;
-  long len;
   PyObject *result;
   struct ui_file *strfile;
 
   strfile = mem_fileopen ();
   fprint_frame_id (strfile, ((frame_object *) self)->frame_id);
-  s = ui_file_xstrdup (strfile, &len);
+  s = ui_file_xstrdup (strfile, NULL);
   result = PyString_FromString (s);
   xfree (s);
 

gdb/python/python-type.c

@@ -494,13 +494,13 @@ typy_str (PyObject *self)
 {
   volatile struct gdb_exception except;
   char *thetype = NULL;
+  long length = 0;
   PyObject *result;
 
   TRY_CATCH (except, RETURN_MASK_ALL)
     {
       struct cleanup *old_chain;
       struct ui_file *stb;
-      long length;
 
       stb = mem_fileopen ();
       old_chain = make_cleanup_ui_file_delete (stb);
@@ -516,7 +516,7 @@ typy_str (PyObject *self)
       GDB_PY_HANDLE_EXCEPTION (except);
     }
 
-  result = PyUnicode_Decode (thetype, strlen (thetype), host_charset (), NULL);
+  result = PyUnicode_Decode (thetype, length, host_charset (), NULL);
   xfree (thetype);
 
   return result;

gdb/python/python-value.c

@@ -348,7 +348,6 @@ static PyObject *
 valpy_str (PyObject *self)
 {
   char *s = NULL;
-  long dummy;
   struct ui_file *stb;
   struct cleanup *old_chain;
   PyObject *result;
@@ -365,7 +364,7 @@ valpy_str (PyObject *self)
     {
       common_val_print (((value_object *) self)->value, stb, 0,
 			&opts, python_language);
-      s = ui_file_xstrdup (stb, &dummy);
+      s = ui_file_xstrdup (stb, NULL);
     }
   GDB_PY_HANDLE_EXCEPTION (except);