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error[E0617]: can't pass a function item to a variadic function
--> $DIR/issue-32201.rs:9:16
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LL | foo(0, bar);
| ^^^
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= help: a function item is zero-sized and needs to be cast into a function pointer to be used in FFI
= note: for more information on function items, visit https://doc.rust-lang.org/reference/types/function-item.html
help: use a function pointer instead
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LL | foo(0, bar as fn(*const u8));
| ++++++++++++++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0617`.
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