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|
#![feature(inline_const)]
#![feature(yeet_expr)]
#![allow(incomplete_features)] // Necessary for now, while explicit_tail_calls is incomplete
#![feature(explicit_tail_calls)]
fn a() {
let foo = {
//~^ WARN irrefutable `let...else` pattern
1
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn b() {
let foo = for i in 1..2 {
break;
} else {
//~^ ERROR `for...else` loops are not supported
return;
};
}
fn c() {
let foo = if true {
//~^ WARN irrefutable `let...else` pattern
1
} else {
0
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn d() {
let foo = loop {
break;
} else {
//~^ ERROR loop...else` loops are not supported
return;
};
}
fn e() {
let foo = match true {
//~^ WARN irrefutable `let...else` pattern
true => 1,
false => 0
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
struct X {a: i32}
fn f() {
let foo = X {
//~^ WARN irrefutable `let...else` pattern
a: 1
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn g() {
let foo = while false {
break;
} else {
//~^ ERROR `while...else` loops are not supported
return;
};
}
fn h() {
let foo = const {
//~^ WARN irrefutable `let...else` pattern
1
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn i() {
let foo = &{
//~^ WARN irrefutable `let...else` pattern
1
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn j() {
let bar = 0;
let foo = bar = { //~ ERROR: cannot assign twice
//~^ WARN irrefutable `let...else` pattern
1
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn k() {
let foo = 1 + {
//~^ WARN irrefutable `let...else` pattern
1
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn l() {
let foo = 1..{
//~^ WARN irrefutable `let...else` pattern
1
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn m() {
let foo = return {
//~^ WARN irrefutable `let...else` pattern
()
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn n() {
let foo = -{
//~^ WARN irrefutable `let...else` pattern
1
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn o() -> Result<(), ()> {
let foo = do yeet {
//~^ WARN irrefutable `let...else` pattern
()
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return Ok(());
};
}
fn p() {
let foo = become {
//~^ WARN irrefutable `let...else` pattern
()
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn q() {
let foo = |x: i32| {
//~^ WARN irrefutable `let...else` pattern
x
} else {
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
return;
};
}
fn r() {
let ok = format_args!("") else { return; };
//~^ WARN irrefutable `let...else` pattern
let bad = format_args! {""} else { return; };
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
//~| WARN irrefutable `let...else` pattern
}
fn s() {
macro_rules! a {
() => { {} }
//~^ WARN irrefutable `let...else` pattern
//~| WARN irrefutable `let...else` pattern
}
macro_rules! b {
(1) => {
let x = a!() else { return; };
};
(2) => {
let x = a! {} else { return; };
//~^ ERROR right curly brace `}` before `else` in a `let...else` statement not allowed
};
}
b!(1); b!(2);
}
fn main() {}
|
