7ab1bfd692
This commit makes the suggestion to dereference when a type implements `Deref` only apply if the dereference would succeed (ie. the type is `Copy`, otherwise a borrow check error would occur).
36 lines
742 B
Rust
36 lines
742 B
Rust
// run-rustfix
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#![allow(warnings)]
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// Test that suggestion to add `*` characters applies to implementations of `Deref` as well as
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// references.
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struct Foo(i32);
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struct Bar(String);
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impl std::ops::Deref for Foo {
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type Target = i32;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl std::ops::Deref for Bar {
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type Target = String;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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fn main() {
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let x = Foo(42);
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let y: i32 = x; //~ ERROR mismatched types
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let a = &42;
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let b: i32 = a; //~ ERROR mismatched types
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// Do not make a suggestion when adding a `*` wouldn't actually fix the issue:
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let f = Bar("bar".to_string());
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let g: String = f; //~ ERROR mismatched types
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}
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