rust/tests/ui/parser/closure-return-syntax.rs

// Test that we cannot parse a closure with an explicit return type
// unless it uses braces.

fn main() {
    let x = || -> i32 22;
    //~^ ERROR expected `{`, found `22`
}
Require braces when a closure has an explicit return type. This is a [breaking-change]: instead of a closure like `\|\| -> i32 22`, prefer `\|\| -> i32 { 22 }`. Fixes #23420. 2015-03-18 09:22:38 -04:00			`// Test that we cannot parse a closure with an explicit return type`
			`// unless it uses braces.`

			`fn main() {`
syntax: don't fake a block around closures' bodies during parsing. 2016-10-26 02:17:29 +03:00			`let x = \|\| -> i32 22;`
more reuse in block parsing & improve diagnostics. 2020-03-05 05:49:30 +01:00			//~^ ERROR expected `{`, found `22`
Require braces when a closure has an explicit return type. This is a [breaking-change]: instead of a closure like `\|\| -> i32 22`, prefer `\|\| -> i32 { 22 }`. Fixes #23420. 2015-03-18 09:22:38 -04:00			`}`