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f5b5e67f0f
```
error[E0308]: mismatched types
--> $DIR/expr-as-stmt.rs:69:5
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LL | match () { () => 1 } + match () { () => 1 }
| ^^^^^^^^^^^^^^^^^^^^ expected `()`, found integer
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help: parentheses are required to parse this as an expression
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LL | (match () { () => 1 }) + match () { () => 1 }
| + +
```
89 lines
2.4 KiB
Rust
89 lines
2.4 KiB
Rust
//@ run-rustfix
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//@ rustfix-only-machine-applicable
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#![allow(unused_variables)]
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#![allow(dead_code)]
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#![allow(unused_must_use)]
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fn foo() -> i32 {
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({2}) + {2} //~ ERROR expected expression, found `+`
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//~^ ERROR mismatched types
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}
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fn bar() -> i32 {
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({2}) + 2 //~ ERROR leading `+` is not supported
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//~^ ERROR mismatched types
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}
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fn zul() -> u32 {
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let foo = 3;
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({ 42 }) + foo; //~ ERROR expected expression, found `+`
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//~^ ERROR mismatched types
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32
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}
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fn baz() -> i32 {
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({ 3 }) * 3 //~ ERROR type `{integer}` cannot be dereferenced
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//~^ ERROR mismatched types
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}
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fn moo(x: u32) -> bool {
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(match x {
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_ => 1,
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}) > 0 //~ ERROR expected expression
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}
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fn qux() -> u32 {
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({2}) - 2 //~ ERROR cannot apply unary operator `-` to type `u32`
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//~^ ERROR mismatched types
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}
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fn space_cadet() -> bool {
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({ true }) | { true } //~ ERROR E0308
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//~^ ERROR expected parameter name
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}
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fn revenge_from_mars() -> bool {
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({ true }) && { true } //~ ERROR E0308
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//~^ ERROR mismatched types
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}
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fn attack_from_mars() -> bool {
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({ true }) || { true } //~ ERROR E0308
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//~^ ERROR mismatched types
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}
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// This gets corrected by adding a semicolon, instead of parens.
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// It's placed here to help keep track of the way this diagnostic
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// needs to interact with type checking to avoid MachineApplicable
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// suggestions that actually break stuff.
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//
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// If you're wondering what happens if that `foo()` is a `true` like
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// all the ones above use? Nothing. It makes neither suggestion in
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// that case.
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fn asteroids() -> impl FnOnce() -> bool {
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{ foo(); } || { true } //~ ERROR E0308
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}
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// https://github.com/rust-lang/rust/issues/105179
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fn r#match() -> i32 {
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((match () { () => 1 })) + match () { () => 1 } //~ ERROR expected expression, found `+`
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//~^ ERROR mismatched types
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}
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// https://github.com/rust-lang/rust/issues/102171
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fn r#unsafe() -> i32 {
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(unsafe { 1 }) + unsafe { 1 } //~ ERROR expected expression, found `+`
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//~^ ERROR mismatched types
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}
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// https://github.com/rust-lang/rust/issues/88727
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fn matches() -> bool {
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(match () { _ => true }) && match () { _ => true }; //~ ERROR mismatched types
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(match () { _ => true }) && match () { _ => true }; //~ ERROR mismatched types
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//~^ ERROR expected `;`, found keyword `match`
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(match () { _ => true }) && true; //~ ERROR mismatched types
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((match () { _ => true })) && true //~ ERROR mismatched types
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//~^ ERROR mismatched types
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}
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fn main() {}
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