21 lines
509 B
Rust
21 lines
509 B
Rust
// allow(const_err) to work around a bug in warnings
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#[allow(const_err)]
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static FOO: fn() = || { assert_ne!(42, 43) };
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#[allow(const_err)]
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static BAR: fn(i32, i32) = |a, b| { assert_ne!(a, b) };
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// use to first make the closure FnOnce() before making it fn()
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fn magic<F: FnOnce()>(f: F) -> F { f }
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fn main() {
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FOO();
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BAR(44, 45);
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let bar: unsafe fn(i32, i32) = BAR;
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unsafe { bar(46, 47) };
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let boo: &dyn Fn(i32, i32) = &BAR;
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boo(48, 49);
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let f = magic(||{}) as fn();
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f();
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}
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