rust/src/test/ui/unboxed-closures/unboxed-closures-infer-fnmut-missing-mut.rs

9 lines
252 B
Rust
Raw Normal View History

// Test that we are able to infer a suitable kind for this closure
// that is just called (`FnMut`).
fn main() {
let mut counter = 0;
let tick = || counter += 1;
tick(); //~ ERROR cannot borrow immutable local variable `tick` as mutable
}