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c439a59dbd
In the desugaring of `assert!`, we now expand to a `match` expression
instead of `if !cond {..}`.
The span of incorrect conditions will point only at the expression, and not
the whole `assert!` invocation.
```
error[E0308]: mismatched types
--> $DIR/issue-14091.rs:2:13
|
LL | assert!(1,1);
| ^ expected `bool`, found integer
```
We no longer mention the expression needing to implement the `Not` trait.
```
error[E0308]: mismatched types
--> $DIR/issue-14091-2.rs:15:13
|
LL | assert!(x, x);
| ^ expected `bool`, found `BytePos`
```
`assert!(val)` now desugars to:
```rust
match val {
true => {},
_ => $crate::panic::panic_2021!(),
}
```
Fix #122159.
We make some minor changes to some diagnostics to avoid span overlap on
type mismatch or inverted "expected"/"found" on type errors.
We remove some unnecessary parens from core, alloc and miri.
address review comments
9 lines
308 B
Rust
9 lines
308 B
Rust
//@ check-pass
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#[derive(PartialEq, Eq, Hash)]
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struct S;
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fn main() {
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let foo = std::rc::Rc::new(std::cell::RefCell::new(std::collections::HashMap::<S, S>::new()));
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// Ensure that the lifetimes of the borrow do not leak past the end of `main`.
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assert!(matches!(foo.borrow().get(&S).unwrap(), S))
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}
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