76 lines
2.5 KiB
Rust
76 lines
2.5 KiB
Rust
#![allow(dead_code)]
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fn foo() {
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// Issue #52544
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let i: &i64 = &1;
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if i < 0 {}
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//~^ ERROR mismatched types [E0308]
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}
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fn bar() {
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// Issue #40660
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let foo = &&0;
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// Dereference LHS
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_ = foo == 0;
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//~^ERROR can't compare `&&{integer}` with `{integer}` [E0277]
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_ = foo == &0;
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//~^ERROR can't compare `&{integer}` with `{integer}` [E0277]
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_ = &&&&foo == 0;
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//~^ERROR can't compare `&&&&&&{integer}` with `{integer}` [E0277]
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_ = *foo == 0;
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//~^ERROR can't compare `&{integer}` with `{integer}` [E0277]
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_ = &&foo == &&0;
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//~^ERROR can't compare `&&{integer}` with `{integer}` [E0277]
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_ = &Box::new(42) == 42;
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//~^ERROR can't compare `&Box<{integer}>` with `{integer}` [E0277]
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_ = &Box::new(&Box::new(&42)) == 42;
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//~^ERROR can't compare `&Box<&Box<&{integer}>>` with `{integer}` [E0277]
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// Dereference RHS
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_ = 0 == foo;
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//~^ERROR can't compare `{integer}` with `&&{integer}` [E0277]
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_ = &0 == foo;
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//~^ERROR can't compare `{integer}` with `&{integer}` [E0277]
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_ = 0 == &&&&foo;
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//~^ERROR can't compare `{integer}` with `&&&&&&{integer}` [E0277]
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_ = 0 == *foo;
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//~^ERROR can't compare `{integer}` with `&{integer}` [E0277]
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_ = &&0 == &&foo;
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//~^ERROR can't compare `{integer}` with `&&{integer}` [E0277]
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// Dereference both sides
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_ = &Box::new(Box::new(42)) == &foo;
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//~^ERROR can't compare `Box<Box<{integer}>>` with `&&{integer}` [E0277]
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_ = &Box::new(42) == &foo;
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//~^ERROR can't compare `Box<{integer}>` with `&&{integer}` [E0277]
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_ = &Box::new(Box::new(Box::new(Box::new(42)))) == &foo;
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//~^ERROR can't compare `Box<Box<Box<Box<{integer}>>>>` with `&&{integer}` [E0277]
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_ = &foo == &Box::new(Box::new(Box::new(Box::new(42))));
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//~^ERROR can't compare `&&{integer}` with `Box<Box<Box<Box<{integer}>>>>` [E0277]
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// Don't suggest dereferencing the LHS; suggest boxing the RHS instead
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_ = Box::new(42) == 42;
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//~^ERROR mismatched types [E0308]
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// Don't suggest dereferencing with types that can't be compared
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struct Foo;
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_ = &&0 == Foo;
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//~^ERROR can't compare `&&{integer}` with `Foo` [E0277]
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_ = Foo == &&0;
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//~^ERROR binary operation `==` cannot be applied to type `Foo` [E0369]
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}
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fn baz() {
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// Issue #44695
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let owned = "foo".to_owned();
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let string_ref = &owned;
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let partial = "foobar";
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_ = string_ref == partial[..3];
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//~^ERROR can't compare `&String` with `str` [E0277]
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_ = partial[..3] == string_ref;
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//~^ERROR can't compare `str` with `&String` [E0277]
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}
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fn main() {}
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