:3:1: warning: [-Wname-shadowing (in -Wall)] This binding for ‘x’ shadows the existing binding defined at :2:1 :4:1: warning: [-Wname-shadowing (in -Wall)] This binding for ‘x’ shadows the existing binding defined at :3:1 :5:5: warning: [-Wname-shadowing (in -Wall)] This binding for ‘x’ shadows the existing binding defined at :4:1