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diagnostics: give a special note for unsafe fn / Fn/FnOnce/FnMut
[rust.git] / src / test / ui / unboxed-closures / unboxed-closure-region.rs
1 // Test that an unboxed closure that captures a free variable by
2 // reference cannot escape the region of that variable.
3
4
5 fn main() {
6     let _f = {
7         let x = 0;
8         || x //~ ERROR `x` does not live long enough
9     };
10     _f;
11 }