Fix 'cmd' array warning (#19193)

4 years ago · 414136f33a
1 changed files with 3 additions and 2 deletions
--- a/Marlin/src/lcd/menu/menu_filament.cpp
+++ b/Marlin/src/lcd/menu/menu_filament.cpp
@ -138,8 +138,9 @@ void _menu_temp_filament_op(const PauseMode mode, const int8_t extruder) {
          SUBMENU_N_P(s, msg, []{ _menu_temp_filament_op(PAUSE_MODE_CHANGE_FILAMENT, MenuItemBase::itemIndex); });
        else {
          ACTION_ITEM_N_P(s, msg, []{
-            char cmd[13];
-            sprintf_P(cmd, PSTR("M600 B0 T%i"), int(MenuItemBase::itemIndex));
+            PGM_P const cmdpstr = PSTR("M600 B0 T%i");
+            char cmd[strlen_P(cmdpstr) + 3 + 1];
+            sprintf_P(cmd, cmdpstr, int(MenuItemBase::itemIndex));
            queue.inject(cmd);
          });
        }