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issues
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issue-40510-captured-variable-return
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issue-40510-1.rs
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#![
allow
(
unused
)]
fn
f
()
{
let
mut
x
:
Box
<()>
=
Box
::
new
(());
||
{
&
mut
x
};
//~^^ ERROR captured variable cannot escape `FnMut` closure body
}
fn
main
()
{}