37 lines
660 B
Rust
37 lines
660 B
Rust
// run-pass
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// Test that we can infer the Target based on the Self or vice versa.
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use std::mem;
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trait Convert<Target> {
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fn convert(&self) -> Target;
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}
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impl Convert<u32> for i16 {
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fn convert(&self) -> u32 {
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*self as u32
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}
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}
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impl Convert<i16> for u32 {
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fn convert(&self) -> i16 {
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*self as i16
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}
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}
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fn test<T,U>(_: T, _: U, t_size: usize, u_size: usize)
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where T : Convert<U>
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{
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assert_eq!(mem::size_of::<T>(), t_size);
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assert_eq!(mem::size_of::<U>(), u_size);
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}
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fn main() {
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// T = i16, U = u32
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test(22_i16, Default::default(), 2, 4);
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// T = u32, U = i16
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test(22_u32, Default::default(), 4, 2);
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}
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