Use field_string in more places

This replaces uses of field_fmt with a "%s" format string to use
field_string instead.  Also, one use of "%9lx" is replaced with a call
to phex_nz; the '9' is dropped as it is implicit in the field width.

2019-07-15  Tom Tromey  <tromey@adacore.com>

	* mi/mi-main.c (list_available_thread_groups): Use field_string.
	* mi/mi-interp.c (mi_memory_changed): Use field_string.
	* target.c (flash_erase_command): Use field_string.
	* infrun.c (print_signal_received_reason): Use field_string.
	* i386-tdep.c (i386_mpx_print_bounds): Use field_string.
	* breakpoint.c (maybe_print_thread_hit_breakpoint): Use
	field_string.
	* ada-tasks.c (print_ada_task_info): Use field_string.

gdb/ChangeLog

@@ -1,3 +1,14 @@
+2019-07-15  Tom Tromey  <tromey@adacore.com>
+
+	* mi/mi-main.c (list_available_thread_groups): Use field_string.
+	* mi/mi-interp.c (mi_memory_changed): Use field_string.
+	* target.c (flash_erase_command): Use field_string.
+	* infrun.c (print_signal_received_reason): Use field_string.
+	* i386-tdep.c (i386_mpx_print_bounds): Use field_string.
+	* breakpoint.c (maybe_print_thread_hit_breakpoint): Use
+	field_string.
+	* ada-tasks.c (print_ada_task_info): Use field_string.
+
 2019-07-15  Tom Tromey  <tromey@adacore.com>
 
 	* target.c (flash_erase_command): Use field_core_addr.

gdb/ada-tasks.c

@@ -1089,7 +1089,8 @@ print_ada_task_info (struct ui_out *uiout,
       uiout->field_int ("id", taskno);
 
       /* Print the Task ID.  */
-      uiout->field_fmt ("task-id", "%9lx", (long) task_info->task_id);
+      uiout->field_string ("task-id", phex_nz (task_info->task_id,
+					       sizeof (CORE_ADDR)));
 
       /* Print the associated Thread ID.  */
       if (uiout->is_mi_like_p ())
@@ -1129,10 +1130,9 @@ print_ada_task_info (struct ui_out *uiout,
 	uiout->field_string ("state", task_states[task_info->state]);
 
       /* Finally, print the task name.  */
-      uiout->field_fmt ("name",
-			"%s",
-			task_info->name[0] != '\0' ? task_info->name
-						   : _("<no name>"));
+      uiout->field_string ("name",
+			   task_info->name[0] != '\0' ? task_info->name
+			   : _("<no name>"));
 
       uiout->text ("\n");
     }

gdb/breakpoint.c

@@ -4483,13 +4483,13 @@ maybe_print_thread_hit_breakpoint (struct ui_out *uiout)
       struct thread_info *thr = inferior_thread ();
 
       uiout->text ("Thread ");
-      uiout->field_fmt ("thread-id", "%s", print_thread_id (thr));
+      uiout->field_string ("thread-id", print_thread_id (thr));
 
       name = thr->name != NULL ? thr->name : target_thread_name (thr);
       if (name != NULL)
 	{
 	  uiout->text (" \"");
-	  uiout->field_fmt ("name", "%s", name);
+	  uiout->field_string ("name", name);
 	  uiout->text ("\"");
 	}
 

gdb/i386-tdep.c

@@ -8914,7 +8914,7 @@ i386_mpx_print_bounds (const CORE_ADDR bt_entry[4])
 
       size = (size > -1 ? size + 1 : size);
       uiout->text (", size = ");
-      uiout->field_fmt ("size", "%s", plongest (size));
+      uiout->field_string ("size", plongest (size));
 
       uiout->text (", metadata = ");
       uiout->field_core_addr ("metadata", gdbarch, bt_entry[3]);

gdb/infrun.c

@@ -7690,13 +7690,13 @@ print_signal_received_reason (struct ui_out *uiout, enum gdb_signal siggnal)
       const char *name;
 
       uiout->text ("\nThread ");
-      uiout->field_fmt ("thread-id", "%s", print_thread_id (thr));
+      uiout->field_string ("thread-id", print_thread_id (thr));
 
       name = thr->name != NULL ? thr->name : target_thread_name (thr);
       if (name != NULL)
 	{
 	  uiout->text (" \"");
-	  uiout->field_fmt ("name", "%s", name);
+	  uiout->field_string ("name", name);
 	  uiout->text ("\"");
 	}
     }

gdb/mi/mi-interp.c

@@ -1172,7 +1172,7 @@ mi_memory_changed (struct inferior *inferior, CORE_ADDR memaddr,
 
       mi_uiout->field_fmt ("thread-group", "i%d", inferior->num);
       mi_uiout->field_core_addr ("addr", target_gdbarch (), memaddr);
-      mi_uiout->field_fmt ("len", "%s", hex_string (len));
+      mi_uiout->field_string ("len", hex_string (len));
 
       /* Append 'type=code' into notification if MEMADDR falls in the range of
 	 sections contain code.  */

gdb/mi/mi-main.c

@@ -746,7 +746,7 @@ list_available_thread_groups (const std::set<int> &ids, int recurse)
 
       ui_out_emit_tuple tuple_emitter (uiout, NULL);
 
-      uiout->field_fmt ("id", "%s", pid->c_str ());
+      uiout->field_string ("id", pid->c_str ());
       uiout->field_string ("type", "process");
       if (cmd)
 	uiout->field_string ("description", cmd->c_str ());

gdb/target.c

@@ -3795,7 +3795,7 @@ flash_erase_command (const char *cmd, int from_tty)
           current_uiout->message (_("Erasing flash memory region at address "));
           current_uiout->field_core_addr ("address", gdbarch, m.lo);
           current_uiout->message (", size = ");
-          current_uiout->field_fmt ("size", "%s", hex_string (m.hi - m.lo));
+          current_uiout->field_string ("size", hex_string (m.hi - m.lo));
           current_uiout->message ("\n");
         }
     }