src/test/ui/parser/bad-interpolated-block.rs

   1 #![feature(label_break_value)]
   2
   3 fn main() {}
   4
   5 macro_rules! m {
   6     ($b:block) => {
   7         'lab: $b; //~ ERROR cannot use a `block` macro fragment here
   8         unsafe $b; //~ ERROR cannot use a `block` macro fragment here
   9         |x: u8| -> () $b; //~ ERROR cannot use a `block` macro fragment here
  10     }
  11 }
  12
  13 fn foo() {
  14     m!({});
  15 }