diff options
Diffstat (limited to 'src/test/ui/closures/closure-immutable-outer-variable.rs')
-rw-r--r-- | src/test/ui/closures/closure-immutable-outer-variable.rs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/closures/closure-immutable-outer-variable.rs b/src/test/ui/closures/closure-immutable-outer-variable.rs new file mode 100644 index 000000000..50ec1c614 --- /dev/null +++ b/src/test/ui/closures/closure-immutable-outer-variable.rs @@ -0,0 +1,13 @@ +// run-rustfix + +// Point at the captured immutable outer variable + +fn foo(mut f: Box<dyn FnMut()>) { + f(); +} + +fn main() { + let y = true; + foo(Box::new(move || y = !y) as Box<_>); + //~^ ERROR cannot assign to `y`, as it is not declared as mutable +} |