2 'l0 while false {} //~ ERROR labeled expression must be followed by `:`
3 'l1 for _ in 0..1 {} //~ ERROR labeled expression must be followed by `:`
4 'l2 loop {} //~ ERROR labeled expression must be followed by `:`
5 'l3 {} //~ ERROR labeled expression must be followed by `:`
6 'l4 0; //~ ERROR labeled expression must be followed by `:`
7 //~^ ERROR expected `while`, `for`, `loop` or `{`
11 'l5 $b; //~ ERROR cannot use a `block` macro fragment here
14 m!({}); //~ ERROR labeled expression must be followed by `:`