23 lines
751 B
Rust
23 lines
751 B
Rust
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// check-pass
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fn foo() -> usize { 42 }
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fn bar(x: usize) -> usize { x }
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fn baz(x: usize, y: usize) -> usize { x + y }
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fn main() {
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println!("{:p}", &foo);
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//~^ WARN cast `foo` with `as *const fn() -> _` to use it as a pointer
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println!("{:p}", &bar);
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//~^ WARN cast `bar` with `as *const fn(_) -> _` to use it as a pointer
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println!("{:p}", &baz);
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//~^ WARN cast `baz` with `as *const fn(_, _) -> _` to use it as a pointer
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//should not produce any warnings
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println!("{:p}", foo as *const fn() -> usize);
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println!("{:p}", bar as *const fn(usize) -> usize);
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println!("{:p}", baz as *const fn(usize, usize) -> usize);
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//should not produce any warnings
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let fn_thing = foo;
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println!("{:p}", &fn_thing);
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}
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