mirror of https://github.com/rust-lang/rust
15 lines
327 B
Rust
15 lines
327 B
Rust
// Check that safe fns are not a subtype of unsafe fns.
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trait Foo {
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unsafe fn len(&self) -> u32;
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}
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impl Foo for u32 {
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fn len(&self) -> u32 { *self }
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//~^ ERROR method `len` has an incompatible type for trait
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//~| expected signature `unsafe fn(&_) -> _`
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//~| found signature `fn(&_) -> _`
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}
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fn main() { }
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