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src
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test
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ui
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no_send-enum.rs
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#![
feature
(
optin_builtin_traits
)]
use
std
::
marker
::
Send
;
struct
NoSend
;
impl
!
Send
for
NoSend
{}
enum
Foo
{
A
(
NoSend
)
}
fn
bar
<
T
:
Send
>(
_
:
T
)
{}
fn
main
()
{
let
x
=
Foo
::
A
(
NoSend
);
bar
(
x
);
//~^ ERROR `NoSend` cannot be sent between threads safely
}