Added closure test case.

2017-08-06 18:25:31 +01:00 · 2017-08-06 18:25:31 +01:00 · d1fffd8685
commit d1fffd8685
parent 9c854db82b
1 changed files with 6 additions and 0 deletions
--- a/src/test/compile-fail/lint-unused-mut-variables.rs
+++ b/src/test/compile-fail/lint-unused-mut-variables.rs
@ -54,6 +54,12 @@ fn main() {
    let mut b = (&mut a,);
    *b.0 = 4; //~^ ERROR: variable does not need to be mutable

+    let mut x = &mut 1; //~ ERROR: variable does not need to be mutable
+    let mut f = || {
+      *x += 1;
+    };
+    f();
+
    fn mut_ref_arg(mut arg : &mut [u8]) -> &mut [u8] {
        &mut arg[..] //~^ ERROR: variable does not need to be mutable
    }