fn 1234test() { //~^ ERROR expected identifier, found `1234test` if let 123 = 123 { println!("yes"); } if let 2e1 = 123 { //~^ ERROR mismatched types } let 23name = 123; //~^ ERROR expected identifier, found `23name` } fn foo() { let 2x: i32 = 123; //~^ ERROR expected identifier, found `2x` } fn bar() { let 1x = 123; //~^ ERROR expected identifier, found `1x` } fn main() {}