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Add test for old ICE

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The ICE from #84044 no longer occurs.
This commit is contained in:
Ben Reeves 2021-12-26 23:30:46 -06:00 committed by Mark Rousskov
parent e0a55f4491
commit 5b2747a3b9
2 changed files with 17 additions and 0 deletions
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6
src/test/ui/closures/issue-84044-drop-non-mut.rs Normal file
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// #84044: This used to ICE.
fn main() {
let f = || {};
drop(&mut f); //~ ERROR cannot borrow `f` as mutable, as it is not declared as mutable
}

11
src/test/ui/closures/issue-84044-drop-non-mut.stderr Normal file
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error[E0596]: cannot borrow `f` as mutable, as it is not declared as mutable
--> $DIR/issue-84044-drop-non-mut.rs:5:10
|
LL | let f = || {};
| - help: consider changing this to be mutable: `mut f`
LL | drop(&mut f);
| ^^^^^^ cannot borrow as mutable
error: aborting due to previous error
For more information about this error, try `rustc --explain E0596`.