diff options
9 files changed, 827 insertions, 301 deletions
diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index 2c43563b104..f9387e29262 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -1393,7 +1393,9 @@ impl<'a> Parser<'a> { self.parse_yield_expr(attrs) } else if self.is_do_yeet() { self.parse_yeet_expr(attrs) - } else if self.eat_keyword(kw::Let) { + } else if self.check_keyword(kw::Let) { + self.manage_let_chains_context(); + self.bump(); self.parse_let_expr(attrs) } else if self.eat_keyword(kw::Underscore) { Ok(self.mk_expr(self.prev_token.span, ExprKind::Underscore, attrs)) @@ -2355,16 +2357,30 @@ impl<'a> Parser<'a> { Ok(cond) } + // Checks if `let` is in an invalid position like `let x = let y = 1;` or + // if the current `let` is in a let_chains context but nested in another + // expression like `if let Some(_) = _opt && [1, 2, 3][let _ = ()] = 1`. + // + // This method expects that the current token is `let`. + fn manage_let_chains_context(&mut self) { + debug_assert!(matches!(self.token.kind, TokenKind::Ident(kw::Let, _))); + let is_in_a_let_chains_context_but_nested_in_other_expr = self.let_expr_allowed + && !matches!( + self.prev_token.kind, + TokenKind::AndAnd + | TokenKind::CloseDelim(Delimiter::Brace) + | TokenKind::Ident(kw::If, _) + | TokenKind::Ident(kw::While, _) + ); + if !self.let_expr_allowed || is_in_a_let_chains_context_but_nested_in_other_expr { + self.struct_span_err(self.token.span, "expected expression, found `let` statement") + .emit(); + } + } + /// Parses a `let $pat = $expr` pseudo-expression. /// The `let` token has already been eaten. fn parse_let_expr(&mut self, attrs: AttrVec) -> PResult<'a, P<Expr>> { - if !self.let_expr_allowed { - self.struct_span_err( - self.prev_token.span, - "expected expression, found `let` statement", - ) - .emit(); - } let lo = self.prev_token.span; let pat = self.parse_pat_allow_top_alt( None, diff --git a/src/test/ui/rfc-2294-if-let-guard/feature-gate.rs b/src/test/ui/rfc-2294-if-let-guard/feature-gate.rs index bb1aff70d89..d8febd273c9 100644 --- a/src/test/ui/rfc-2294-if-let-guard/feature-gate.rs +++ b/src/test/ui/rfc-2294-if-let-guard/feature-gate.rs @@ -9,9 +9,11 @@ fn _if_let_guard() { () if (let 0 = 1) => {} //~^ ERROR `let` expressions in this position are unstable + //~| ERROR expected expression, found `let` statement () if (((let 0 = 1))) => {} //~^ ERROR `let` expressions in this position are unstable + //~| ERROR expected expression, found `let` statement () if true && let 0 = 1 => {} //~^ ERROR `if let` guards are experimental @@ -23,13 +25,17 @@ fn _if_let_guard() { () if (let 0 = 1) && true => {} //~^ ERROR `let` expressions in this position are unstable + //~| ERROR expected expression, found `let` statement () if true && (let 0 = 1) => {} //~^ ERROR `let` expressions in this position are unstable + //~| ERROR expected expression, found `let` statement () if (let 0 = 1) && (let 0 = 1) => {} //~^ ERROR `let` expressions in this position are unstable //~| ERROR `let` expressions in this position are unstable + //~| ERROR expected expression, found `let` statement + //~| ERROR expected expression, found `let` statement () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} //~^ ERROR `if let` guards are experimental @@ -38,6 +44,7 @@ fn _if_let_guard() { //~| ERROR `let` expressions in this position are unstable //~| ERROR `let` expressions in this position are unstable //~| ERROR `let` expressions in this position are unstable + //~| ERROR expected expression, found `let` statement () if let Range { start: _, end: _ } = (true..true) && false => {} //~^ ERROR `if let` guards are experimental diff --git a/src/test/ui/rfc-2294-if-let-guard/feature-gate.stderr b/src/test/ui/rfc-2294-if-let-guard/feature-gate.stderr index 370a57318fd..52b5bca628a 100644 --- a/src/test/ui/rfc-2294-if-let-guard/feature-gate.stderr +++ b/src/test/ui/rfc-2294-if-let-guard/feature-gate.stderr @@ -1,17 +1,59 @@ error: expected expression, found `let` statement - --> $DIR/feature-gate.rs:59:16 + --> $DIR/feature-gate.rs:10:16 + | +LL | () if (let 0 = 1) => {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/feature-gate.rs:14:18 + | +LL | () if (((let 0 = 1))) => {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/feature-gate.rs:26:16 + | +LL | () if (let 0 = 1) && true => {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/feature-gate.rs:30:24 + | +LL | () if true && (let 0 = 1) => {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/feature-gate.rs:34:16 + | +LL | () if (let 0 = 1) && (let 0 = 1) => {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/feature-gate.rs:34:31 + | +LL | () if (let 0 = 1) && (let 0 = 1) => {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/feature-gate.rs:40:42 + | +LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/feature-gate.rs:66:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^ error: expected expression, found `let` statement - --> $DIR/feature-gate.rs:62:16 + --> $DIR/feature-gate.rs:69:16 | LL | use_expr!((let 0 = 1)); | ^^^ error: no rules expected the token `let` - --> $DIR/feature-gate.rs:71:15 + --> $DIR/feature-gate.rs:78:15 | LL | macro_rules! use_expr { | --------------------- when calling this macro @@ -30,7 +72,7 @@ LL | () if let 0 = 1 => {} = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>` error[E0658]: `if let` guards are experimental - --> $DIR/feature-gate.rs:16:12 + --> $DIR/feature-gate.rs:18:12 | LL | () if true && let 0 = 1 => {} | ^^^^^^^^^^^^^^^^^^^^ @@ -40,7 +82,7 @@ LL | () if true && let 0 = 1 => {} = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>` error[E0658]: `if let` guards are experimental - --> $DIR/feature-gate.rs:20:12 + --> $DIR/feature-gate.rs:22:12 | LL | () if let 0 = 1 && true => {} | ^^^^^^^^^^^^^^^^^^^^ @@ -50,7 +92,7 @@ LL | () if let 0 = 1 && true => {} = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>` error[E0658]: `if let` guards are experimental - --> $DIR/feature-gate.rs:34:12 + --> $DIR/feature-gate.rs:40:12 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -60,7 +102,7 @@ LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>` error[E0658]: `if let` guards are experimental - --> $DIR/feature-gate.rs:42:12 + --> $DIR/feature-gate.rs:49:12 | LL | () if let Range { start: _, end: _ } = (true..true) && false => {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -70,7 +112,7 @@ LL | () if let Range { start: _, end: _ } = (true..true) && false => {} = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>` error[E0658]: `if let` guards are experimental - --> $DIR/feature-gate.rs:67:12 + --> $DIR/feature-gate.rs:74:12 | LL | () if let 0 = 1 => {} | ^^^^^^^^^^^^ @@ -89,7 +131,7 @@ LL | () if (let 0 = 1) => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:13:18 + --> $DIR/feature-gate.rs:14:18 | LL | () if (((let 0 = 1))) => {} | ^^^^^^^^^ @@ -98,7 +140,7 @@ LL | () if (((let 0 = 1))) => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:16:23 + --> $DIR/feature-gate.rs:18:23 | LL | () if true && let 0 = 1 => {} | ^^^^^^^^^ @@ -107,7 +149,7 @@ LL | () if true && let 0 = 1 => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:20:15 + --> $DIR/feature-gate.rs:22:15 | LL | () if let 0 = 1 && true => {} | ^^^^^^^^^ @@ -116,7 +158,7 @@ LL | () if let 0 = 1 && true => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:24:16 + --> $DIR/feature-gate.rs:26:16 | LL | () if (let 0 = 1) && true => {} | ^^^^^^^^^ @@ -125,7 +167,7 @@ LL | () if (let 0 = 1) && true => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:27:24 + --> $DIR/feature-gate.rs:30:24 | LL | () if true && (let 0 = 1) => {} | ^^^^^^^^^ @@ -134,7 +176,7 @@ LL | () if true && (let 0 = 1) => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:30:16 + --> $DIR/feature-gate.rs:34:16 | LL | () if (let 0 = 1) && (let 0 = 1) => {} | ^^^^^^^^^ @@ -143,7 +185,7 @@ LL | () if (let 0 = 1) && (let 0 = 1) => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:30:31 + --> $DIR/feature-gate.rs:34:31 | LL | () if (let 0 = 1) && (let 0 = 1) => {} | ^^^^^^^^^ @@ -152,7 +194,7 @@ LL | () if (let 0 = 1) && (let 0 = 1) => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:34:15 + --> $DIR/feature-gate.rs:40:15 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ @@ -161,7 +203,7 @@ LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:34:28 + --> $DIR/feature-gate.rs:40:28 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ @@ -170,7 +212,7 @@ LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:34:42 + --> $DIR/feature-gate.rs:40:42 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ @@ -179,7 +221,7 @@ LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:34:55 + --> $DIR/feature-gate.rs:40:55 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ @@ -188,7 +230,7 @@ LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:34:68 + --> $DIR/feature-gate.rs:40:68 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ @@ -197,7 +239,7 @@ LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:42:15 + --> $DIR/feature-gate.rs:49:15 | LL | () if let Range { start: _, end: _ } = (true..true) && false => {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -206,7 +248,7 @@ LL | () if let Range { start: _, end: _ } = (true..true) && false => {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:59:16 + --> $DIR/feature-gate.rs:66:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^^^^^^^ @@ -215,7 +257,7 @@ LL | use_expr!((let 0 = 1 && 0 == 0)); = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:62:16 + --> $DIR/feature-gate.rs:69:16 | LL | use_expr!((let 0 = 1)); | ^^^^^^^^^ @@ -223,6 +265,6 @@ LL | use_expr!((let 0 = 1)); = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable -error: aborting due to 25 previous errors +error: aborting due to 32 previous errors For more information about this error, try `rustc --explain E0658`. diff --git a/src/test/ui/rfc-2497-if-let-chains/disallowed-positions.rs b/src/test/ui/rfc-2497-if-let-chains/disallowed-positions.rs index 36b730505c2..069d2dc414d 100644 --- a/src/test/ui/rfc-2497-if-let-chains/disallowed-positions.rs +++ b/src/test/ui/rfc-2497-if-let-chains/disallowed-positions.rs @@ -28,47 +28,61 @@ fn main() {} fn _if() { if (let 0 = 1) {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement if (((let 0 = 1))) {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement if (let 0 = 1) && true {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement if true && (let 0 = 1) {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement if (let 0 = 1) && (let 0 = 1) {} //~^ ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + //~| ERROR expected expression, found `let` statement if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} //~^ ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement } fn _while() { while (let 0 = 1) {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement while (((let 0 = 1))) {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement while (let 0 = 1) && true {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement while true && (let 0 = 1) {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement while (let 0 = 1) && (let 0 = 1) {} //~^ ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + //~| ERROR expected expression, found `let` statement while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} //~^ ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement } fn _macros() { @@ -89,39 +103,64 @@ fn _macros() { } fn nested_within_if_expr() { - if &let 0 = 0 {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types + if &let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement - if !let 0 = 0 {} //~ ERROR `let` expressions are not supported here - if *let 0 = 0 {} //~ ERROR `let` expressions are not supported here - //~^ ERROR type `bool` cannot be dereferenced - if -let 0 = 0 {} //~ ERROR `let` expressions are not supported here - //~^ ERROR cannot apply unary operator `-` to type `bool` + if !let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + if *let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR type `bool` cannot be dereferenced + //~| ERROR expected expression, found `let` statement + if -let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR cannot apply unary operator `-` to type `bool` + //~| ERROR expected expression, found `let` statement fn _check_try_binds_tighter() -> Result<(), ()> { if let 0 = 0? {} //~^ ERROR the `?` operator can only be applied to values that implement `Try` Ok(()) } - if (let 0 = 0)? {} //~ ERROR `let` expressions are not supported here - //~^ ERROR the `?` operator can only be applied to values that implement `Try` + if (let 0 = 0)? {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR the `?` operator can only be applied to values that implement `Try` //~| ERROR the `?` operator can only be used in a function that returns `Result` + //~| ERROR expected expression, found `let` statement - if true || let 0 = 0 {} //~ ERROR `let` expressions are not supported here - if (true || let 0 = 0) {} //~ ERROR `let` expressions are not supported here - if true && (true || let 0 = 0) {} //~ ERROR `let` expressions are not supported here - if true || (true && let 0 = 0) {} //~ ERROR `let` expressions are not supported here + if true || let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + if (true || let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + if true && (true || let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + if true || (true && let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here let mut x = true; - if x = let 0 = 0 {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types + if x = let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement - if true..(let 0 = 0) {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types - if ..(let 0 = 0) {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types - if (let 0 = 0).. {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types + if true..(let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement + if ..(let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement + if (let 0 = 0).. {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement // Binds as `(let ... = true)..true &&/|| false`. if let Range { start: _, end: _ } = true..true && false {} @@ -151,42 +190,68 @@ fn nested_within_if_expr() { if let true = let true = true {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement } fn nested_within_while_expr() { - while &let 0 = 0 {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types + while &let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement - while !let 0 = 0 {} //~ ERROR `let` expressions are not supported here - while *let 0 = 0 {} //~ ERROR `let` expressions are not supported here - //~^ ERROR type `bool` cannot be dereferenced - while -let 0 = 0 {} //~ ERROR `let` expressions are not supported here - //~^ ERROR cannot apply unary operator `-` to type `bool` + while !let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + while *let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR type `bool` cannot be dereferenced + //~| ERROR expected expression, found `let` statement + while -let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR cannot apply unary operator `-` to type `bool` + //~| ERROR expected expression, found `let` statement fn _check_try_binds_tighter() -> Result<(), ()> { while let 0 = 0? {} //~^ ERROR the `?` operator can only be applied to values that implement `Try` Ok(()) } - while (let 0 = 0)? {} //~ ERROR `let` expressions are not supported here - //~^ ERROR the `?` operator can only be applied to values that implement `Try` + while (let 0 = 0)? {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR the `?` operator can only be applied to values that implement `Try` //~| ERROR the `?` operator can only be used in a function that returns `Result` + //~| ERROR expected expression, found `let` statement - while true || let 0 = 0 {} //~ ERROR `let` expressions are not supported here - while (true || let 0 = 0) {} //~ ERROR `let` expressions are not supported here - while true && (true || let 0 = 0) {} //~ ERROR `let` expressions are not supported here - while true || (true && let 0 = 0) {} //~ ERROR `let` expressions are not supported here + while true || let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + while (true || let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + while true && (true || let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + while true || (true && let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here let mut x = true; - while x = let 0 = 0 {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types + while x = let 0 = 0 {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement - while true..(let 0 = 0) {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types - while ..(let 0 = 0) {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types - while (let 0 = 0).. {} //~ ERROR `let` expressions are not supported here - //~^ ERROR mismatched types + while true..(let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement + while ..(let 0 = 0) {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement + while (let 0 = 0).. {} + //~^ ERROR `let` expressions are not supported here + //~| ERROR mismatched types + //~| ERROR expected expression, found `let` statement // Binds as `(let ... = true)..true &&/|| false`. while let Range { start: _, end: _ } = true..true && false {} @@ -216,6 +281,7 @@ fn nested_within_while_expr() { while let true = let true = true {} //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement } fn not_error_because_clarified_intent() { @@ -316,15 +382,18 @@ fn inside_const_generic_arguments() { impl<const B: bool> A<{B}> { const O: u32 = 5; } if let A::<{ - true && let 1 = 1 //~ ERROR `let` expressions are not supported here + true && let 1 = 1 + //~^ ERROR `let` expressions are not supported here }>::O = 5 {} while let A::<{ - true && let 1 = 1 //~ ERROR `let` expressions are not supported here + true && let 1 = 1 + //~^ ERROR `let` expressions are not supported here }>::O = 5 {} if A::<{ - true && let 1 = 1 //~ ERROR `let` expressions are not supported here + true && let 1 = 1 + //~^ ERROR `let` expressions are not supported here }>::O == 5 {} // In the cases above we have `ExprKind::Block` to help us out. @@ -345,14 +414,18 @@ fn with_parenthesis() { if (let Some(a) = opt && true) { //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement } if (let Some(a) = opt) && true { //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement } if (let Some(a) = opt) && (let Some(b) = a) { //~^ ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + //~| ERROR expected expression, found `let` statement } if let Some(a) = opt && (true && true) { } @@ -360,13 +433,18 @@ fn with_parenthesis() { if (let Some(a) = opt && (let Some(b) = a)) && b == 1 { //~^ ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + //~| ERROR expected expression, found `let` statement } if (let Some(a) = opt && (let Some(b) = a)) && true { //~^ ERROR `let` expressions are not supported here //~| ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement + //~| ERROR expected expression, found `let` statement } if (let Some(a) = opt && (true)) && true { //~^ ERROR `let` expressions are not supported here + //~| ERROR expected expression, found `let` statement } if (true && (true)) && let Some(a) = opt { diff --git a/src/test/ui/rfc-2497-if-let-chains/disallowed-positions.stderr b/src/test/ui/rfc-2497-if-let-chains/disallowed-positions.stderr index 93a1f691c8e..cca5310ee0f 100644 --- a/src/test/ui/rfc-2497-if-let-chains/disallowed-positions.stderr +++ b/src/test/ui/rfc-2497-if-let-chains/disallowed-positions.stderr @@ -1,113 +1,353 @@ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:232:6 + --> $DIR/disallowed-positions.rs:29:9 + | +LL | if (let 0 = 1) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:33:11 + | +LL | if (((let 0 = 1))) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:37:9 + | +LL | if (let 0 = 1) && true {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:41:17 + | +LL | if true && (let 0 = 1) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:45:9 + | +LL | if (let 0 = 1) && (let 0 = 1) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:45:24 + | +LL | if (let 0 = 1) && (let 0 = 1) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:51:35 + | +LL | if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:59:12 + | +LL | while (let 0 = 1) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:63:14 + | +LL | while (((let 0 = 1))) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:67:12 + | +LL | while (let 0 = 1) && true {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:71:20 + | +LL | while true && (let 0 = 1) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:75:12 + | +LL | while (let 0 = 1) && (let 0 = 1) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:75:27 + | +LL | while (let 0 = 1) && (let 0 = 1) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:81:38 + | +LL | while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:106:9 + | +LL | if &let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:111:9 + | +LL | if !let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:114:9 + | +LL | if *let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:118:9 + | +LL | if -let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:128:9 + | +LL | if (let 0 = 0)? {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:134:16 + | +LL | if true || let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:137:17 + | +LL | if (true || let 0 = 0) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:140:25 + | +LL | if true && (true || let 0 = 0) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:147:12 + | +LL | if x = let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:152:15 + | +LL | if true..(let 0 = 0) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:156:11 + | +LL | if ..(let 0 = 0) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:160:9 + | +LL | if (let 0 = 0).. {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:191:19 + | +LL | if let true = let true = true {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:197:12 + | +LL | while &let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:202:12 + | +LL | while !let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:205:12 + | +LL | while *let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:209:12 + | +LL | while -let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:219:12 + | +LL | while (let 0 = 0)? {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:225:19 + | +LL | while true || let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:228:20 + | +LL | while (true || let 0 = 0) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:231:28 + | +LL | while true && (true || let 0 = 0) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:238:15 + | +LL | while x = let 0 = 0 {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:243:18 + | +LL | while true..(let 0 = 0) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:247:14 + | +LL | while ..(let 0 = 0) {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:251:12 + | +LL | while (let 0 = 0).. {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:282:22 + | +LL | while let true = let true = true {} + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:298:6 | LL | &let 0 = 0; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:236:6 + --> $DIR/disallowed-positions.rs:302:6 | LL | !let 0 = 0; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:239:6 + --> $DIR/disallowed-positions.rs:305:6 | LL | *let 0 = 0; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:243:6 + --> $DIR/disallowed-positions.rs:309:6 | LL | -let 0 = 0; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:253:6 + --> $DIR/disallowed-positions.rs:319:6 | LL | (let 0 = 0)?; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:259:13 + --> $DIR/disallowed-positions.rs:325:13 | LL | true || let 0 = 0; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:262:14 + --> $DIR/disallowed-positions.rs:328:14 | LL | (true || let 0 = 0); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:265:22 + --> $DIR/disallowed-positions.rs:331:22 | LL | true && (true || let 0 = 0); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:270:9 + --> $DIR/disallowed-positions.rs:336:9 | LL | x = let 0 = 0; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:274:12 + --> $DIR/disallowed-positions.rs:340:12 | LL | true..(let 0 = 0); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:277:8 + --> $DIR/disallowed-positions.rs:343:8 | LL | ..(let 0 = 0); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:280:6 + --> $DIR/disallowed-positions.rs:346:6 | LL | (let 0 = 0)..; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:284:6 + --> $DIR/disallowed-positions.rs:350:6 | LL | (let Range { start: _, end: _ } = true..true || false); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:289:6 + --> $DIR/disallowed-positions.rs:355:6 | LL | (let true = let true = true); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:289:17 + --> $DIR/disallowed-positions.rs:355:17 | LL | (let true = let true = true); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:296:25 + --> $DIR/disallowed-positions.rs:362:25 | LL | let x = true && let y = 1; | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:302:19 + --> $DIR/disallowed-positions.rs:368:19 | LL | [1, 2, 3][let _ = ()] | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:307:6 + --> $DIR/disallowed-positions.rs:373:6 | LL | &let 0 = 0 | ^^^ error: expressions must be enclosed in braces to be used as const generic arguments - --> $DIR/disallowed-positions.rs:337:9 + --> $DIR/disallowed-positions.rs:406:9 | LL | true && let 1 = 1 | ^^^^^^^^^^^^^^^^^ @@ -118,25 +358,79 @@ LL | { true && let 1 = 1 } | + + error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:384:22 + --> $DIR/disallowed-positions.rs:415:9 + | +LL | if (let Some(a) = opt && true) { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:420:9 + | +LL | if (let Some(a) = opt) && true { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:424:9 + | +LL | if (let Some(a) = opt) && (let Some(b) = a) { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:424:32 + | +LL | if (let Some(a) = opt) && (let Some(b) = a) { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:433:9 + | +LL | if (let Some(a) = opt && (let Some(b) = a)) && b == 1 { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:433:31 + | +LL | if (let Some(a) = opt && (let Some(b) = a)) && b == 1 { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:439:9 + | +LL | if (let Some(a) = opt && (let Some(b) = a)) && true { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:439:31 + | +LL | if (let Some(a) = opt && (let Some(b) = a)) && true { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:445:9 + | +LL | if (let Some(a) = opt && (true)) && true { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/disallowed-positions.rs:462:22 | LL | let x = (true && let y = 1); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:389:20 + --> $DIR/disallowed-positions.rs:467:20 | LL | ([1, 2, 3][let _ = ()]) | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:81:16 + --> $DIR/disallowed-positions.rs:95:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^ error: expected expression, found `let` statement - --> $DIR/disallowed-positions.rs:85:16 + --> $DIR/disallowed-positions.rs:99:16 | LL | use_expr!((let 0 = 1)); | ^^^ @@ -155,280 +449,280 @@ LL | if (let 0 = 1) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:32:11 + --> $DIR/disallowed-positions.rs:33:11 | LL | if (((let 0 = 1))) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:32:11 + --> $DIR/disallowed-positions.rs:33:11 | LL | if (((let 0 = 1))) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:35:9 + --> $DIR/disallowed-positions.rs:37:9 | LL | if (let 0 = 1) && true {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:35:9 + --> $DIR/disallowed-positions.rs:37:9 | LL | if (let 0 = 1) && true {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:38:17 + --> $DIR/disallowed-positions.rs:41:17 | LL | if true && (let 0 = 1) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:38:17 + --> $DIR/disallowed-positions.rs:41:17 | LL | if true && (let 0 = 1) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:41:9 + --> $DIR/disallowed-positions.rs:45:9 | LL | if (let 0 = 1) && (let 0 = 1) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:41:9 + --> $DIR/disallowed-positions.rs:45:9 | LL | if (let 0 = 1) && (let 0 = 1) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:41:24 + --> $DIR/disallowed-positions.rs:45:24 | LL | if (let 0 = 1) && (let 0 = 1) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:41:24 + --> $DIR/disallowed-positions.rs:45:24 | LL | if (let 0 = 1) && (let 0 = 1) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:45:35 + --> $DIR/disallowed-positions.rs:51:35 | LL | if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:45:35 + --> $DIR/disallowed-positions.rs:51:35 | LL | if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:45:48 + --> $DIR/disallowed-positions.rs:51:48 | LL | if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:45:35 + --> $DIR/disallowed-positions.rs:51:35 | LL | if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:45:61 + --> $DIR/disallowed-positions.rs:51:61 | LL | if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:45:35 + --> $DIR/disallowed-positions.rs:51:35 | LL | if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:52:12 + --> $DIR/disallowed-positions.rs:59:12 | LL | while (let 0 = 1) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:52:12 + --> $DIR/disallowed-positions.rs:59:12 | LL | while (let 0 = 1) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:55:14 + --> $DIR/disallowed-positions.rs:63:14 | LL | while (((let 0 = 1))) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:55:14 + --> $DIR/disallowed-positions.rs:63:14 | LL | while (((let 0 = 1))) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:58:12 + --> $DIR/disallowed-positions.rs:67:12 | LL | while (let 0 = 1) && true {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:58:12 + --> $DIR/disallowed-positions.rs:67:12 | LL | while (let 0 = 1) && true {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:61:20 + --> $DIR/disallowed-positions.rs:71:20 | LL | while true && (let 0 = 1) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:61:20 + --> $DIR/disallowed-positions.rs:71:20 | LL | while true && (let 0 = 1) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:64:12 + --> $DIR/disallowed-positions.rs:75:12 | LL | while (let 0 = 1) && (let 0 = 1) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:64:12 + --> $DIR/disallowed-positions.rs:75:12 | LL | while (let 0 = 1) && (let 0 = 1) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:64:27 + --> $DIR/disallowed-positions.rs:75:27 | LL | while (let 0 = 1) && (let 0 = 1) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:64:27 + --> $DIR/disallowed-positions.rs:75:27 | LL | while (let 0 = 1) && (let 0 = 1) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:68:38 + --> $DIR/disallowed-positions.rs:81:38 | LL | while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:68:38 + --> $DIR/disallowed-positions.rs:81:38 | LL | while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:68:51 + --> $DIR/disallowed-positions.rs:81:51 | LL | while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:68:38 + --> $DIR/disallowed-positions.rs:81:38 | LL | while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:68:64 + --> $DIR/disallowed-positions.rs:81:64 | LL | while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:68:38 + --> $DIR/disallowed-positions.rs:81:38 | LL | while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:81:16 + --> $DIR/disallowed-positions.rs:95:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:81:16 + --> $DIR/disallowed-positions.rs:95:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:81:16 + --> $DIR/disallowed-positions.rs:95:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:81:16 + --> $DIR/disallowed-positions.rs:95:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:85:16 + --> $DIR/disallowed-positions.rs:99:16 | LL | use_expr!((let 0 = 1)); | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:85:16 + --> $DIR/disallowed-positions.rs:99:16 | LL | use_expr!((let 0 = 1)); | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:85:16 + --> $DIR/disallowed-positions.rs:99:16 | LL | use_expr!((let 0 = 1)); | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:85:16 + --> $DIR/disallowed-positions.rs:99:16 | LL | use_expr!((let 0 = 1)); | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:92:9 + --> $DIR/disallowed-positions.rs:106:9 | LL | if &let 0 = 0 {} | ^^^^^^^^^ @@ -436,7 +730,7 @@ LL | if &let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:95:9 + --> $DIR/disallowed-positions.rs:111:9 | LL | if !let 0 = 0 {} | ^^^^^^^^^ @@ -444,7 +738,7 @@ LL | if !let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:96:9 + --> $DIR/disallowed-positions.rs:114:9 | LL | if *let 0 = 0 {} | ^^^^^^^^^ @@ -452,7 +746,7 @@ LL | if *let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:98:9 + --> $DIR/disallowed-positions.rs:118:9 | LL | if -let 0 = 0 {} | ^^^^^^^^^ @@ -460,72 +754,72 @@ LL | if -let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:106:9 + --> $DIR/disallowed-positions.rs:128:9 | LL | if (let 0 = 0)? {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:106:9 + --> $DIR/disallowed-positions.rs:128:9 | LL | if (let 0 = 0)? {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:110:16 + --> $DIR/disallowed-positions.rs:134:16 | LL | if true || let 0 = 0 {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:110:13 + --> $DIR/disallowed-positions.rs:134:13 | LL | if true || let 0 = 0 {} | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:111:17 + --> $DIR/disallowed-positions.rs:137:17 | LL | if (true || let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:111:14 + --> $DIR/disallowed-positions.rs:137:14 | LL | if (true || let 0 = 0) {} | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:112:25 + --> $DIR/disallowed-positions.rs:140:25 | LL | if true && (true || let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:112:22 + --> $DIR/disallowed-positions.rs:140:22 | LL | if true && (true || let 0 = 0) {} | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:113:25 + --> $DIR/disallowed-positions.rs:143:25 | LL | if true || (true && let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:113:17 + --> $DIR/disallowed-positions.rs:143:17 | LL | if true || (true && let 0 = 0) {} | ^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:116:12 + --> $DIR/disallowed-positions.rs:147:12 | LL | if x = let 0 = 0 {} | ^^^^^^^^^ @@ -533,46 +827,46 @@ LL | if x = let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:119:15 + --> $DIR/disallowed-positions.rs:152:15 | LL | if true..(let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:119:15 + --> $DIR/disallowed-positions.rs:152:15 | LL | if true..(let 0 = 0) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:121:11 + --> $DIR/disallowed-positions.rs:156:11 | LL | if ..(let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:121:11 + --> $DIR/disallowed-positions.rs:156:11 | LL | if ..(let 0 = 0) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:123:9 + --> $DIR/disallowed-positions.rs:160:9 | LL | if (let 0 = 0).. {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:123:9 + --> $DIR/disallowed-positions.rs:160:9 | LL | if (let 0 = 0).. {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:127:8 + --> $DIR/disallowed-positions.rs:166:8 | LL | if let Range { start: _, end: _ } = true..true && false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -580,7 +874,7 @@ LL | if let Range { start: _, end: _ } = true..true && false {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:131:8 + --> $DIR/disallowed-positions.rs:170:8 | LL | if let Range { start: _, end: _ } = true..true || false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -588,7 +882,7 @@ LL | if let Range { start: _, end: _ } = true..true || false {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:138:8 + --> $DIR/disallowed-positions.rs:177:8 | LL | if let Range { start: F, end } = F..|| true {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -596,7 +890,7 @@ LL | if let Range { start: F, end } = F..|| true {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:146:8 + --> $DIR/disallowed-positions.rs:185:8 | LL | if let Range { start: true, end } = t..&&false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -604,7 +898,7 @@ LL | if let Range { start: true, end } = t..&&false {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:152:19 + --> $DIR/disallowed-positions.rs:191:19 | LL | if let true = let true = true {} | ^^^^^^^^^^^^^^^ @@ -612,7 +906,7 @@ LL | if let true = let true = true {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:157:12 + --> $DIR/disallowed-positions.rs:197:12 | LL | while &let 0 = 0 {} | ^^^^^^^^^ @@ -620,7 +914,7 @@ LL | while &let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:160:12 + --> $DIR/disallowed-positions.rs:202:12 | LL | while !let 0 = 0 {} | ^^^^^^^^^ @@ -628,7 +922,7 @@ LL | while !let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:161:12 + --> $DIR/disallowed-positions.rs:205:12 | LL | while *let 0 = 0 {} | ^^^^^^^^^ @@ -636,7 +930,7 @@ LL | while *let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:163:12 + --> $DIR/disallowed-positions.rs:209:12 | LL | while -let 0 = 0 {} | ^^^^^^^^^ @@ -644,72 +938,72 @@ LL | while -let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:171:12 + --> $DIR/disallowed-positions.rs:219:12 | LL | while (let 0 = 0)? {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:171:12 + --> $DIR/disallowed-positions.rs:219:12 | LL | while (let 0 = 0)? {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:175:19 + --> $DIR/disallowed-positions.rs:225:19 | LL | while true || let 0 = 0 {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:175:16 + --> $DIR/disallowed-positions.rs:225:16 | LL | while true || let 0 = 0 {} | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:176:20 + --> $DIR/disallowed-positions.rs:228:20 | LL | while (true || let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:176:17 + --> $DIR/disallowed-positions.rs:228:17 | LL | while (true || let 0 = 0) {} | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:177:28 + --> $DIR/disallowed-positions.rs:231:28 | LL | while true && (true || let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:177:25 + --> $DIR/disallowed-positions.rs:231:25 | LL | while true && (true || let 0 = 0) {} | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:178:28 + --> $DIR/disallowed-positions.rs:234:28 | LL | while true || (true && let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:178:20 + --> $DIR/disallowed-positions.rs:234:20 | LL | while true || (true && let 0 = 0) {} | ^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:181:15 + --> $DIR/disallowed-positions.rs:238:15 | LL | while x = let 0 = 0 {} | ^^^^^^^^^ @@ -717,46 +1011,46 @@ LL | while x = let 0 = 0 {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:184:18 + --> $DIR/disallowed-positions.rs:243:18 | LL | while true..(let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:184:18 + --> $DIR/disallowed-positions.rs:243:18 | LL | while true..(let 0 = 0) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:186:14 + --> $DIR/disallowed-positions.rs:247:14 | LL | while ..(let 0 = 0) {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:186:14 + --> $DIR/disallowed-positions.rs:247:14 | LL | while ..(let 0 = 0) {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:188:12 + --> $DIR/disallowed-positions.rs:251:12 | LL | while (let 0 = 0).. {} | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:188:12 + --> $DIR/disallowed-positions.rs:251:12 | LL | while (let 0 = 0).. {} | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:192:11 + --> $DIR/disallowed-positions.rs:257:11 | LL | while let Range { start: _, end: _ } = true..true && false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -764,7 +1058,7 @@ LL | while let Range { start: _, end: _ } = true..true && false {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:196:11 + --> $DIR/disallowed-positions.rs:261:11 | LL | while let Range { start: _, end: _ } = true..true || false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -772,7 +1066,7 @@ LL | while let Range { start: _, end: _ } = true..true || false {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:203:11 + --> $DIR/disallowed-positions.rs:268:11 | LL | while let Range { start: F, end } = F..|| true {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -780,7 +1074,7 @@ LL | while let Range { start: F, end } = F..|| true {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:211:11 + --> $DIR/disallowed-positions.rs:276:11 | LL | while let Range { start: true, end } = t..&&false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -788,7 +1082,7 @@ LL | while let Range { start: true, end } = t..&&false {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:217:22 + --> $DIR/disallowed-positions.rs:282:22 | LL | while let true = let true = true {} | ^^^^^^^^^^^^^^^ @@ -796,7 +1090,7 @@ LL | while let true = let true = true {} = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:232:6 + --> $DIR/disallowed-positions.rs:298:6 | LL | &let 0 = 0; | ^^^^^^^^^ @@ -804,7 +1098,7 @@ LL | &let 0 = 0; = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:236:6 + --> $DIR/disallowed-positions.rs:302:6 | LL | !let 0 = 0; | ^^^^^^^^^ @@ -812,7 +1106,7 @@ LL | !let 0 = 0; = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:239:6 + --> $DIR/disallowed-positions.rs:305:6 | LL | *let 0 = 0; | ^^^^^^^^^ @@ -820,7 +1114,7 @@ LL | *let 0 = 0; = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:243:6 + --> $DIR/disallowed-positions.rs:309:6 | LL | -let 0 = 0; | ^^^^^^^^^ @@ -828,59 +1122,59 @@ LL | -let 0 = 0; = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:253:6 + --> $DIR/disallowed-positions.rs:319:6 | LL | (let 0 = 0)?; | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:253:6 + --> $DIR/disallowed-positions.rs:319:6 | LL | (let 0 = 0)?; | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:259:13 + --> $DIR/disallowed-positions.rs:325:13 | LL | true || let 0 = 0; | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:259:10 + --> $DIR/disallowed-positions.rs:325:10 | LL | true || let 0 = 0; | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:262:14 + --> $DIR/disallowed-positions.rs:328:14 | LL | (true || let 0 = 0); | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:262:11 + --> $DIR/disallowed-positions.rs:328:11 | LL | (true || let 0 = 0); | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:265:22 + --> $DIR/disallowed-positions.rs:331:22 | LL | true && (true || let 0 = 0); | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `||` operators are not supported in let chain expressions - --> $DIR/disallowed-positions.rs:265:19 + --> $DIR/disallowed-positions.rs:331:19 | LL | true && (true || let 0 = 0); | ^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:270:9 + --> $DIR/disallowed-positions.rs:336:9 | LL | x = let 0 = 0; | ^^^^^^^^^ @@ -888,46 +1182,46 @@ LL | x = let 0 = 0; = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:274:12 + --> $DIR/disallowed-positions.rs:340:12 | LL | true..(let 0 = 0); | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:274:12 + --> $DIR/disallowed-positions.rs:340:12 | LL | true..(let 0 = 0); | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:277:8 + --> $DIR/disallowed-positions.rs:343:8 | LL | ..(let 0 = 0); | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:277:8 + --> $DIR/disallowed-positions.rs:343:8 | LL | ..(let 0 = 0); | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:280:6 + --> $DIR/disallowed-positions.rs:346:6 | LL | (let 0 = 0)..; | ^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:280:6 + --> $DIR/disallowed-positions.rs:346:6 | LL | (let 0 = 0)..; | ^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:284:6 + --> $DIR/disallowed-positions.rs:350:6 | LL | (let Range { start: _, end: _ } = true..true || false); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -935,20 +1229,20 @@ LL | (let Range { start: _, end: _ } = true..true || false); = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:289:6 + --> $DIR/disallowed-positions.rs:355:6 | LL | (let true = let true = true); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:289:6 + --> $DIR/disallowed-positions.rs:355:6 | LL | (let true = let true = true); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:307:6 + --> $DIR/disallowed-positions.rs:373:6 | LL | &let 0 = 0 | ^^^^^^^^^ @@ -956,7 +1250,7 @@ LL | &let 0 = 0 = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:319:17 + --> $DIR/disallowed-positions.rs:385:17 | LL | true && let 1 = 1 | ^^^^^^^^^ @@ -964,7 +1258,7 @@ LL | true && let 1 = 1 = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:323:17 + --> $DIR/disallowed-positions.rs:390:17 | LL | true && let 1 = 1 | ^^^^^^^^^ @@ -972,7 +1266,7 @@ LL | true && let 1 = 1 = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:327:17 + --> $DIR/disallowed-positions.rs:395:17 | LL | true && let 1 = 1 | ^^^^^^^^^ @@ -980,7 +1274,7 @@ LL | true && let 1 = 1 = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:337:17 + --> $DIR/disallowed-positions.rs:406:17 | LL | true && let 1 = 1 | ^^^^^^^^^ @@ -988,124 +1282,124 @@ LL | true && let 1 = 1 = note: only supported directly in conditions of `if` and `while` expressions error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:346:9 + --> $DIR/disallowed-positions.rs:415:9 | LL | if (let Some(a) = opt && true) { | ^^^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:346:9 + --> $DIR/disallowed-positions.rs:415:9 | LL | if (let Some(a) = opt && true) { | ^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:350:9 + --> $DIR/disallowed-positions.rs:420:9 | LL | if (let Some(a) = opt) && true { | ^^^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:350:9 + --> $DIR/disallowed-positions.rs:420:9 | LL | if (let Some(a) = opt) && true { | ^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:353:9 + --> $DIR/disallowed-positions.rs:424:9 | LL | if (let Some(a) = opt) && (let Some(b) = a) { | ^^^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:353:9 + --> $DIR/disallowed-positions.rs:424:9 | LL | if (let Some(a) = opt) && (let Some(b) = a) { | ^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:353:32 + --> $DIR/disallowed-positions.rs:424:32 | LL | if (let Some(a) = opt) && (let Some(b) = a) { | ^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:353:32 + --> $DIR/disallowed-positions.rs:424:32 | LL | if (let Some(a) = opt) && (let Some(b) = a) { | ^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:360:9 + --> $DIR/disallowed-positions.rs:433:9 | LL | if (let Some(a) = opt && (let Some(b) = a)) && b == 1 { | ^^^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:360:9 + --> $DIR/disallowed-positions.rs:433:9 | LL | if (let Some(a) = opt && (let Some(b) = a)) && b == 1 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:360:31 + --> $DIR/disallowed-positions.rs:433:31 | LL | if (let Some(a) = opt && (let Some(b) = a)) && b == 1 { | ^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:360:31 + --> $DIR/disallowed-positions.rs:433:31 | LL | if (let Some(a) = opt && (let Some(b) = a)) && b == 1 { | ^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:364:9 + --> $DIR/disallowed-positions.rs:439:9 | LL | if (let Some(a) = opt && (let Some(b) = a)) && true { | ^^^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:364:9 + --> $DIR/disallowed-positions.rs:439:9 | LL | if (let Some(a) = opt && (let Some(b) = a)) && true { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:364:31 + --> $DIR/disallowed-positions.rs:439:31 | LL | if (let Some(a) = opt && (let Some(b) = a)) && true { | ^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:364:31 + --> $DIR/disallowed-positions.rs:439:31 | LL | if (let Some(a) = opt && (let Some(b) = a)) && true { | ^^^^^^^^^^^^^^^ error: `let` expressions are not supported here - --> $DIR/disallowed-positions.rs:368:9 + --> $DIR/disallowed-positions.rs:445:9 | LL | if (let Some(a) = opt && (true)) && true { | ^^^^^^^^^^^^^^^^^ | = note: only supported directly in conditions of `if` and `while` expressions note: `let`s wrapped in parentheses are not supported in a context with let chains - --> $DIR/disallowed-positions.rs:368:9 + --> $DIR/disallowed-positions.rs:445:9 | LL | if (let Some(a) = opt && (true)) && true { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:92:8 + --> $DIR/disallowed-positions.rs:106:8 | LL | if &let 0 = 0 {} | ^^^^^^^^^^ expected `bool`, found `&bool` @@ -1117,19 +1411,19 @@ LL + if let 0 = 0 {} | error[E0614]: type `bool` cannot be dereferenced - --> $DIR/disallowed-positions.rs:96:8 + --> $DIR/disallowed-positions.rs:114:8 | LL | if *let 0 = 0 {} | ^^^^^^^^^^ error[E0600]: cannot apply unary operator `-` to type `bool` - --> $DIR/disallowed-positions.rs:98:8 + --> $DIR/disallowed-positions.rs:118:8 | LL | if -let 0 = 0 {} | ^^^^^^^^^^ cannot apply unary operator `-` error[E0277]: the `?` operator can only be applied to values that implement `Try` - --> $DIR/disallowed-positions.rs:106:8 + --> $DIR/disallowed-positions.rs:128:8 | LL | if (let 0 = 0)? {} | ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool` @@ -1137,7 +1431,7 @@ LL | if (let 0 = 0)? {} = help: the trait `Try` is not implemented for `bool` error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) - --> $DIR/disallowed-positions.rs:106:19 + --> $DIR/disallowed-positions.rs:128:19 | LL | / fn nested_within_if_expr() { LL | | if &let 0 = 0 {} @@ -1154,7 +1448,7 @@ LL | | } = help: the trait `FromResidual<_>` is not implemented for `()` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:116:8 + --> $DIR/disallowed-positions.rs:147:8 | LL | if x = let 0 = 0 {} | ^^^^^^^^^^^^^ expected `bool`, found `()` @@ -1165,7 +1459,7 @@ LL | if x == let 0 = 0 {} | ~~ error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:119:8 + --> $DIR/disallowed-positions.rs:152:8 | LL | if true..(let 0 = 0) {} | ^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1174,7 +1468,7 @@ LL | if true..(let 0 = 0) {} found struct `std::ops::Range<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:121:8 + --> $DIR/disallowed-positions.rs:156:8 | LL | if ..(let 0 = 0) {} | ^^^^^^^^^^^^^ expected `bool`, found struct `RangeTo` @@ -1183,7 +1477,7 @@ LL | if ..(let 0 = 0) {} found struct `RangeTo<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:123:8 + --> $DIR/disallowed-positions.rs:160:8 | LL | if (let 0 = 0).. {} | ^^^^^^^^^^^^^ expected `bool`, found struct `RangeFrom` @@ -1192,7 +1486,7 @@ LL | if (let 0 = 0).. {} found struct `RangeFrom<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:127:12 + --> $DIR/disallowed-positions.rs:166:12 | LL | if let Range { start: _, end: _ } = true..true && false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ ---- this expression has type `bool` @@ -1203,7 +1497,7 @@ LL | if let Range { start: _, end: _ } = true..true && false {} found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:127:8 + --> $DIR/disallowed-positions.rs:166:8 | LL | if let Range { start: _, end: _ } = true..true && false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1212,7 +1506,7 @@ LL | if let Range { start: _, end: _ } = true..true && false {} found struct `std::ops::Range<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:131:12 + --> $DIR/disallowed-positions.rs:170:12 | LL | if let Range { start: _, end: _ } = true..true || false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ ---- this expression has type `bool` @@ -1223,7 +1517,7 @@ LL | if let Range { start: _, end: _ } = true..true || false {} found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:131:8 + --> $DIR/disallowed-positions.rs:170:8 | LL | if let Range { start: _, end: _ } = true..true || false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1232,7 +1526,7 @@ LL | if let Range { start: _, end: _ } = true..true || false {} found struct `std::ops::Range<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:138:12 + --> $DIR/disallowed-positions.rs:177:12 | LL | if let Range { start: F, end } = F..|| true {} | ^^^^^^^^^^^^^^^^^^^^^^^ - this expression has type `fn() -> bool` @@ -1243,20 +1537,20 @@ LL | if let Range { start: F, end } = F..|| true {} found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:138:41 + --> $DIR/disallowed-positions.rs:177:41 | LL | if let Range { start: F, end } = F..|| true {} | ^^^^^^^ expected `bool`, found closure | = note: expected type `bool` - found closure `[closure@$DIR/disallowed-positions.rs:138:41: 138:43]` + found closure `[closure@$DIR/disallowed-positions.rs:177:41: 177:43]` help: use parentheses to call this closure | LL | if let Range { start: F, end } = F..(|| true)() {} | + +++ error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:138:8 + --> $DIR/disallowed-positions.rs:177:8 | LL | if let Range { start: F, end } = F..|| true {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1265,7 +1559,7 @@ LL | if let Range { start: F, end } = F..|| true {} found struct `std::ops::Range<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:146:12 + --> $DIR/disallowed-positions.rs:185:12 | LL | if let Range { start: true, end } = t..&&false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ - this expression has type `&&bool` @@ -1276,7 +1570,7 @@ LL | if let Range { start: true, end } = t..&&false {} found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:146:44 + --> $DIR/disallowed-positions.rs:185:44 | LL | if let Range { start: true, end } = t..&&false {} | ^^^^^^^ expected `bool`, found `&&bool` @@ -1288,7 +1582,7 @@ LL + if let Range { start: true, end } = t..false {} | error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:146:8 + --> $DIR/disallowed-positions.rs:185:8 | LL | if let Range { start: true, end } = t..&&false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1297,7 +1591,7 @@ LL | if let Range { start: true, end } = t..&&false {} found struct `std::ops::Range<bool>` error[E0277]: the `?` operator can only be applied to values that implement `Try` - --> $DIR/disallowed-positions.rs:102:20 + --> $DIR/disallowed-positions.rs:124:20 | LL | if let 0 = 0? {} | ^^ the `?` operator cannot be applied to type `{integer}` @@ -1305,7 +1599,7 @@ LL | if let 0 = 0? {} = help: the trait `Try` is not implemented for `{integer}` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:157:11 + --> $DIR/disallowed-positions.rs:197:11 | LL | while &let 0 = 0 {} | ^^^^^^^^^^ expected `bool`, found `&bool` @@ -1317,19 +1611,19 @@ LL + while let 0 = 0 {} | error[E0614]: type `bool` cannot be dereferenced - --> $DIR/disallowed-positions.rs:161:11 + --> $DIR/disallowed-positions.rs:205:11 | LL | while *let 0 = 0 {} | ^^^^^^^^^^ error[E0600]: cannot apply unary operator `-` to type `bool` - --> $DIR/disallowed-positions.rs:163:11 + --> $DIR/disallowed-positions.rs:209:11 | LL | while -let 0 = 0 {} | ^^^^^^^^^^ cannot apply unary operator `-` error[E0277]: the `?` operator can only be applied to values that implement `Try` - --> $DIR/disallowed-positions.rs:171:11 + --> $DIR/disallowed-positions.rs:219:11 | LL | while (let 0 = 0)? {} | ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool` @@ -1337,7 +1631,7 @@ LL | while (let 0 = 0)? {} = help: the trait `Try` is not implemented for `bool` error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) - --> $DIR/disallowed-positions.rs:171:22 + --> $DIR/disallowed-positions.rs:219:22 | LL | / fn nested_within_while_expr() { LL | | while &let 0 = 0 {} @@ -1354,7 +1648,7 @@ LL | | } = help: the trait `FromResidual<_>` is not implemented for `()` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:181:11 + --> $DIR/disallowed-positions.rs:238:11 | LL | while x = let 0 = 0 {} | ^^^^^^^^^^^^^ expected `bool`, found `()` @@ -1365,7 +1659,7 @@ LL | while x == let 0 = 0 {} | ~~ error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:184:11 + --> $DIR/disallowed-positions.rs:243:11 | LL | while true..(let 0 = 0) {} | ^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1374,7 +1668,7 @@ LL | while true..(let 0 = 0) {} found struct `std::ops::Range<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:186:11 + --> $DIR/disallowed-positions.rs:247:11 | LL | while ..(let 0 = 0) {} | ^^^^^^^^^^^^^ expected `bool`, found struct `RangeTo` @@ -1383,7 +1677,7 @@ LL | while ..(let 0 = 0) {} found struct `RangeTo<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:188:11 + --> $DIR/disallowed-positions.rs:251:11 | LL | while (let 0 = 0).. {} | ^^^^^^^^^^^^^ expected `bool`, found struct `RangeFrom` @@ -1392,7 +1686,7 @@ LL | while (let 0 = 0).. {} found struct `RangeFrom<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:192:15 + --> $DIR/disallowed-positions.rs:257:15 | LL | while let Range { start: _, end: _ } = true..true && false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ ---- this expression has type `bool` @@ -1403,7 +1697,7 @@ LL | while let Range { start: _, end: _ } = true..true && false {} found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:192:11 + --> $DIR/disallowed-positions.rs:257:11 | LL | while let Range { start: _, end: _ } = true..true && false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1412,7 +1706,7 @@ LL | while let Range { start: _, end: _ } = true..true && false {} found struct `std::ops::Range<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:196:15 + --> $DIR/disallowed-positions.rs:261:15 | LL | while let Range { start: _, end: _ } = true..true || false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ ---- this expression has type `bool` @@ -1423,7 +1717,7 @@ LL | while let Range { start: _, end: _ } = true..true || false {} found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:196:11 + --> $DIR/disallowed-positions.rs:261:11 | LL | while let Range { start: _, end: _ } = true..true || false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1432,7 +1726,7 @@ LL | while let Range { start: _, end: _ } = true..true || false {} found struct `std::ops::Range<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:203:15 + --> $DIR/disallowed-positions.rs:268:15 | LL | while let Range { start: F, end } = F..|| true {} | ^^^^^^^^^^^^^^^^^^^^^^^ - this expression has type `fn() -> bool` @@ -1443,20 +1737,20 @@ LL | while let Range { start: F, end } = F..|| true {} found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:203:44 + --> $DIR/disallowed-positions.rs:268:44 | LL | while let Range { start: F, end } = F..|| true {} | ^^^^^^^ expected `bool`, found closure | = note: expected type `bool` - found closure `[closure@$DIR/disallowed-positions.rs:203:44: 203:46]` + found closure `[closure@$DIR/disallowed-positions.rs:268:44: 268:46]` help: use parentheses to call this closure | LL | while let Range { start: F, end } = F..(|| true)() {} | + +++ error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:203:11 + --> $DIR/disallowed-positions.rs:268:11 | LL | while let Range { start: F, end } = F..|| true {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1465,7 +1759,7 @@ LL | while let Range { start: F, end } = F..|| true {} found struct `std::ops::Range<bool>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:211:15 + --> $DIR/disallowed-positions.rs:276:15 | LL | while let Range { start: true, end } = t..&&false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ - this expression has type `&&bool` @@ -1476,7 +1770,7 @@ LL | while let Range { start: true, end } = t..&&false {} found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:211:47 + --> $DIR/disallowed-positions.rs:276:47 | LL | while let Range { start: true, end } = t..&&false {} | ^^^^^^^ expected `bool`, found `&&bool` @@ -1488,7 +1782,7 @@ LL + while let Range { start: true, end } = t..false {} | error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:211:11 + --> $DIR/disallowed-positions.rs:276:11 | LL | while let Range { start: true, end } = t..&&false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `std::ops::Range` @@ -1497,7 +1791,7 @@ LL | while let Range { start: true, end } = t..&&false {} found struct `std::ops::Range<bool>` error[E0277]: the `?` operator can only be applied to values that implement `Try` - --> $DIR/disallowed-positions.rs:167:23 + --> $DIR/disallowed-positions.rs:215:23 | LL | while let 0 = 0? {} | ^^ the `?` operator cannot be applied to type `{integer}` @@ -1505,19 +1799,19 @@ LL | while let 0 = 0? {} = help: the trait `Try` is not implemented for `{integer}` error[E0614]: type `bool` cannot be dereferenced - --> $DIR/disallowed-positions.rs:239:5 + --> $DIR/disallowed-positions.rs:305:5 | LL | *let 0 = 0; | ^^^^^^^^^^ error[E0600]: cannot apply unary operator `-` to type `bool` - --> $DIR/disallowed-positions.rs:243:5 + --> $DIR/disallowed-positions.rs:309:5 | LL | -let 0 = 0; | ^^^^^^^^^^ cannot apply unary operator `-` error[E0277]: the `?` operator can only be applied to values that implement `Try` - --> $DIR/disallowed-positions.rs:253:5 + --> $DIR/disallowed-positions.rs:319:5 | LL | (let 0 = 0)?; | ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool` @@ -1525,7 +1819,7 @@ LL | (let 0 = 0)?; = help: the trait `Try` is not implemented for `bool` error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) - --> $DIR/disallowed-positions.rs:253:16 + --> $DIR/disallowed-positions.rs:319:16 | LL | / fn outside_if_and_while_expr() { LL | | &let 0 = 0; @@ -1542,7 +1836,7 @@ LL | | } = help: the trait `FromResidual<_>` is not implemented for `()` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:284:10 + --> $DIR/disallowed-positions.rs:350:10 | LL | (let Range { start: _, end: _ } = true..true || false); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ ---- this expression has type `bool` @@ -1553,7 +1847,7 @@ LL | (let Range { start: _, end: _ } = true..true || false); found struct `std::ops::Range<_>` error[E0308]: mismatched types - --> $DIR/disallowed-positions.rs:307:5 + --> $DIR/disallowed-positions.rs:373:5 | LL | fn outside_if_and_while_expr() { | - help: try adding a return type: `-> &bool` @@ -1562,14 +1856,14 @@ LL | &let 0 = 0 | ^^^^^^^^^^ expected `()`, found `&bool` error[E0277]: the `?` operator can only be applied to values that implement `Try` - --> $DIR/disallowed-positions.rs:249:17 + --> $DIR/disallowed-positions.rs:315:17 | LL | let 0 = 0?; | ^^ the `?` operator cannot be applied to type `{integer}` | = help: the trait `Try` is not implemented for `{integer}` -error: aborting due to 156 previous errors +error: aborting due to 205 previous errors Some errors have detailed explanations: E0277, E0308, E0600, E0614. For more information about an error, try `rustc --explain E0277`. diff --git a/src/test/ui/rfc-2497-if-let-chains/feature-gate.rs b/src/test/ui/rfc-2497-if-let-chains/feature-gate.rs index 87718211308..2b407ef510c 100644 --- a/src/test/ui/rfc-2497-if-let-chains/feature-gate.rs +++ b/src/test/ui/rfc-2497-if-let-chains/feature-gate.rs @@ -19,6 +19,11 @@ fn _if() { if let Range { start: _, end: _ } = (true..true) && false {} //~^ ERROR `let` expressions in this position are unstable [E0658] + + if let 1 = 1 && let true = { true } && false { + //~^ ERROR `let` expressions in this position are unstable [E0658] + //~| ERROR `let` expressions in this position are unstable [E0658] + } } fn _while() { diff --git a/src/test/ui/rfc-2497-if-let-chains/feature-gate.stderr b/src/test/ui/rfc-2497-if-let-chains/feature-gate.stderr index bcea8bbaa73..feea1c254d8 100644 --- a/src/test/ui/rfc-2497-if-let-chains/feature-gate.stderr +++ b/src/test/ui/rfc-2497-if-let-chains/feature-gate.stderr @@ -1,17 +1,17 @@ error: expected expression, found `let` statement - --> $DIR/feature-gate.rs:50:20 + --> $DIR/feature-gate.rs:55:20 | LL | #[cfg(FALSE)] (let 0 = 1); | ^^^ error: expected expression, found `let` statement - --> $DIR/feature-gate.rs:40:17 + --> $DIR/feature-gate.rs:45:17 | LL | noop_expr!((let 0 = 1)); | ^^^ error: no rules expected the token `let` - --> $DIR/feature-gate.rs:53:15 + --> $DIR/feature-gate.rs:58:15 | LL | macro_rules! use_expr { | --------------------- when calling this macro @@ -47,7 +47,25 @@ LL | if let Range { start: _, end: _ } = (true..true) && false {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:27:19 + --> $DIR/feature-gate.rs:23:8 + | +LL | if let 1 = 1 && let true = { true } && false { + | ^^^^^^^^^ + | + = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information + = help: add `#![feature(let_chains)]` to the crate attributes to enable + +error[E0658]: `let` expressions in this position are unstable + --> $DIR/feature-gate.rs:23:21 + | +LL | if let 1 = 1 && let true = { true } && false { + | ^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information + = help: add `#![feature(let_chains)]` to the crate attributes to enable + +error[E0658]: `let` expressions in this position are unstable + --> $DIR/feature-gate.rs:32:19 | LL | while true && let 0 = 1 {} | ^^^^^^^^^ @@ -56,7 +74,7 @@ LL | while true && let 0 = 1 {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:30:11 + --> $DIR/feature-gate.rs:35:11 | LL | while let 0 = 1 && true {} | ^^^^^^^^^ @@ -65,7 +83,7 @@ LL | while let 0 = 1 && true {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:33:11 + --> $DIR/feature-gate.rs:38:11 | LL | while let Range { start: _, end: _ } = (true..true) && false {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -74,7 +92,7 @@ LL | while let Range { start: _, end: _ } = (true..true) && false {} = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:50:20 + --> $DIR/feature-gate.rs:55:20 | LL | #[cfg(FALSE)] (let 0 = 1); | ^^^^^^^^^ @@ -83,7 +101,7 @@ LL | #[cfg(FALSE)] (let 0 = 1); = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable - --> $DIR/feature-gate.rs:40:17 + --> $DIR/feature-gate.rs:45:17 | LL | noop_expr!((let 0 = 1)); | ^^^^^^^^^ @@ -91,6 +109,6 @@ LL | noop_expr!((let 0 = 1)); = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable -error: aborting due to 11 previous errors +error: aborting due to 13 previous errors For more information about this error, try `rustc --explain E0658`. diff --git a/src/test/ui/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs b/src/test/ui/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs index 6cc53a1935b..a942d1f4caf 100644 --- a/src/test/ui/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs +++ b/src/test/ui/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs @@ -1,6 +1,3 @@ -// check-pass -// known-bug - #![feature(let_chains)] fn main() { @@ -8,10 +5,41 @@ fn main() { #[cfg(FALSE)] { + let _ = &&let Some(x) = Some(42); + //~^ ERROR expected expression, found `let` statement + } + #[cfg(FALSE)] + { + if let Some(elem) = _opt && [1, 2, 3][let _ = &&let Some(x) = Some(42)] = 1 { + //~^ ERROR expected expression, found `let` statement + //~| ERROR expected expression, found `let` statement + true + } + } + + #[cfg(FALSE)] + { if let Some(elem) = _opt && { [1, 2, 3][let _ = ()]; + //~^ ERROR expected expression, found `let` statement true } { } } + + #[cfg(FALSE)] + { + if let Some(elem) = _opt && [1, 2, 3][let _ = ()] = 1 { + //~^ ERROR expected expression, found `let` statement + true + } + } + #[cfg(FALSE)] + { + if let a = 1 && { + let x = let y = 1; + //~^ ERROR expected expression, found `let` statement + } { + } + } } diff --git a/src/test/ui/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.stderr b/src/test/ui/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.stderr new file mode 100644 index 00000000000..d1ce83c7233 --- /dev/null +++ b/src/test/ui/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.stderr @@ -0,0 +1,38 @@ +error: expected expression, found `let` statement + --> $DIR/invalid-let-in-a-valid-let-context.rs:8:19 + | +LL | let _ = &&let Some(x) = Some(42); + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/invalid-let-in-a-valid-let-context.rs:13:47 + | +LL | if let Some(elem) = _opt && [1, 2, 3][let _ = &&let Some(x) = Some(42)] = 1 { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/invalid-let-in-a-valid-let-context.rs:13:57 + | +LL | if let Some(elem) = _opt && [1, 2, 3][let _ = &&let Some(x) = Some(42)] = 1 { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/invalid-let-in-a-valid-let-context.rs:23:23 + | +LL | [1, 2, 3][let _ = ()]; + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/invalid-let-in-a-valid-let-context.rs:32:47 + | +LL | if let Some(elem) = _opt && [1, 2, 3][let _ = ()] = 1 { + | ^^^ + +error: expected expression, found `let` statement + --> $DIR/invalid-let-in-a-valid-let-context.rs:40:21 + | +LL | let x = let y = 1; + | ^^^ + +error: aborting due to 6 previous errors + |