diff options
| -rw-r--r-- | clippy_lints/src/suspicious_operation_groupings.rs | 3 | ||||
| -rw-r--r-- | clippy_utils/src/ast_utils.rs | 2 | ||||
| -rw-r--r-- | clippy_utils/src/sugg.rs | 1 | ||||
| -rw-r--r-- | tests/ui/boxed_local.rs | 35 | ||||
| -rw-r--r-- | tests/ui/boxed_local.stderr | 8 | ||||
| -rw-r--r-- | tests/ui/no_effect.rs | 3 | ||||
| -rw-r--r-- | tests/ui/no_effect.stderr | 38 | ||||
| -rw-r--r-- | tests/ui/unnecessary_operation.fixed | 2 | ||||
| -rw-r--r-- | tests/ui/unnecessary_operation.rs | 2 | ||||
| -rw-r--r-- | tests/ui/unnecessary_operation.stderr | 46 |
10 files changed, 55 insertions, 85 deletions
diff --git a/clippy_lints/src/suspicious_operation_groupings.rs b/clippy_lints/src/suspicious_operation_groupings.rs index e111c7d2291..8aa47b62ebf 100644 --- a/clippy_lints/src/suspicious_operation_groupings.rs +++ b/clippy_lints/src/suspicious_operation_groupings.rs @@ -596,8 +596,7 @@ fn ident_difference_expr_with_base_location( | (MethodCall(_), MethodCall(_)) | (Call(_, _), Call(_, _)) | (ConstBlock(_), ConstBlock(_)) - | (Array(_), Array(_)) - | (Box(_), Box(_)) => { + | (Array(_), Array(_)) => { // keep going }, _ => { diff --git a/clippy_utils/src/ast_utils.rs b/clippy_utils/src/ast_utils.rs index d82098523e3..809d654603a 100644 --- a/clippy_utils/src/ast_utils.rs +++ b/clippy_utils/src/ast_utils.rs @@ -143,7 +143,7 @@ pub fn eq_expr(l: &Expr, r: &Expr) -> bool { (Paren(l), _) => eq_expr(l, r), (_, Paren(r)) => eq_expr(l, r), (Err, Err) => true, - (Box(l), Box(r)) | (Try(l), Try(r)) | (Await(l), Await(r)) => eq_expr(l, r), + (Try(l), Try(r)) | (Await(l), Await(r)) => eq_expr(l, r), (Array(l), Array(r)) => over(l, r, |l, r| eq_expr(l, r)), (Tup(l), Tup(r)) => over(l, r, |l, r| eq_expr(l, r)), (Repeat(le, ls), Repeat(re, rs)) => eq_expr(le, re) && eq_expr(&ls.value, &rs.value), diff --git a/clippy_utils/src/sugg.rs b/clippy_utils/src/sugg.rs index 07feadca2b0..85bf28b708b 100644 --- a/clippy_utils/src/sugg.rs +++ b/clippy_utils/src/sugg.rs @@ -188,7 +188,6 @@ impl<'a> Sugg<'a> { match expr.kind { _ if expr.span.ctxt() != ctxt => Sugg::NonParen(snippet_with_context(cx, expr.span, ctxt, default, app).0), ast::ExprKind::AddrOf(..) - | ast::ExprKind::Box(..) | ast::ExprKind::Closure { .. } | ast::ExprKind::If(..) | ast::ExprKind::Let(..) diff --git a/tests/ui/boxed_local.rs b/tests/ui/boxed_local.rs index 4639f00a8d8..79b6d33fc77 100644 --- a/tests/ui/boxed_local.rs +++ b/tests/ui/boxed_local.rs @@ -1,4 +1,3 @@ -#![feature(box_syntax)] #![feature(lint_reasons)] #![allow( clippy::borrowed_box, @@ -34,7 +33,7 @@ fn ok_box_trait(boxed_trait: &Box<dyn Z>) { } fn warn_call() { - let x = box A; + let x = Box::new(A); x.foo(); } @@ -43,41 +42,41 @@ fn warn_arg(x: Box<A>) { } fn nowarn_closure_arg() { - let x = Some(box A); + let x = Some(Box::new(A)); x.map_or((), |x| take_ref(&x)); } fn warn_rename_call() { - let x = box A; + let x = Box::new(A); let y = x; y.foo(); // via autoderef } fn warn_notuse() { - let bz = box A; + let bz = Box::new(A); } fn warn_pass() { - let bz = box A; + let bz = Box::new(A); take_ref(&bz); // via deref coercion } fn nowarn_return() -> Box<A> { - box A // moved out, "escapes" + Box::new(A) // moved out, "escapes" } fn nowarn_move() { - let bx = box A; + let bx = Box::new(A); drop(bx) // moved in, "escapes" } fn nowarn_call() { - let bx = box A; + let bx = Box::new(A); bx.clone(); // method only available to Box, not via autoderef } fn nowarn_pass() { - let bx = box A; + let bx = Box::new(A); take_box(&bx); // fn needs &Box } @@ -86,30 +85,20 @@ fn take_ref(x: &A) {} fn nowarn_ref_take() { // false positive, should actually warn - let x = box A; + let x = Box::new(A); let y = &x; take_box(y); } fn nowarn_match() { - let x = box A; // moved into a match + let x = Box::new(A); // moved into a match match x { y => drop(y), } } fn warn_match() { - let x = box A; - match &x { - // not moved - y => (), - } -} - -fn nowarn_large_array() { - // should not warn, is large array - // and should not be on stack - let x = box [1; 10000]; + let x = Box::new(A); match &x { // not moved y => (), diff --git a/tests/ui/boxed_local.stderr b/tests/ui/boxed_local.stderr index 9036529f39c..10d78fbc0ab 100644 --- a/tests/ui/boxed_local.stderr +++ b/tests/ui/boxed_local.stderr @@ -1,5 +1,5 @@ error: local variable doesn't need to be boxed here - --> $DIR/boxed_local.rs:41:13 + --> $DIR/boxed_local.rs:40:13 | LL | fn warn_arg(x: Box<A>) { | ^ @@ -7,19 +7,19 @@ LL | fn warn_arg(x: Box<A>) { = note: `-D clippy::boxed-local` implied by `-D warnings` error: local variable doesn't need to be boxed here - --> $DIR/boxed_local.rs:132:12 + --> $DIR/boxed_local.rs:121:12 | LL | pub fn new(_needs_name: Box<PeekableSeekable<&()>>) -> () {} | ^^^^^^^^^^^ error: local variable doesn't need to be boxed here - --> $DIR/boxed_local.rs:196:44 + --> $DIR/boxed_local.rs:185:44 | LL | fn default_impl_x(self: Box<Self>, x: Box<u32>) -> u32 { | ^ error: local variable doesn't need to be boxed here - --> $DIR/boxed_local.rs:203:16 + --> $DIR/boxed_local.rs:192:16 | LL | fn foo(x: Box<u32>) {} | ^ diff --git a/tests/ui/no_effect.rs b/tests/ui/no_effect.rs index f08eb092e6b..ec8a5aa28c5 100644 --- a/tests/ui/no_effect.rs +++ b/tests/ui/no_effect.rs @@ -1,4 +1,4 @@ -#![feature(box_syntax, fn_traits, unboxed_closures)] +#![feature(fn_traits, unboxed_closures)] #![warn(clippy::no_effect_underscore_binding)] #![allow(dead_code, path_statements)] #![allow(clippy::deref_addrof, clippy::redundant_field_names, clippy::uninlined_format_args)] @@ -102,7 +102,6 @@ fn main() { *&42; &6; (5, 6, 7); - box 42; ..; 5..; ..5; diff --git a/tests/ui/no_effect.stderr b/tests/ui/no_effect.stderr index 6a1e636f9a6..92f6dbfbdba 100644 --- a/tests/ui/no_effect.stderr +++ b/tests/ui/no_effect.stderr @@ -81,83 +81,77 @@ LL | (5, 6, 7); error: statement with no effect --> $DIR/no_effect.rs:105:5 | -LL | box 42; - | ^^^^^^^ - -error: statement with no effect - --> $DIR/no_effect.rs:106:5 - | LL | ..; | ^^^ error: statement with no effect - --> $DIR/no_effect.rs:107:5 + --> $DIR/no_effect.rs:106:5 | LL | 5..; | ^^^^ error: statement with no effect - --> $DIR/no_effect.rs:108:5 + --> $DIR/no_effect.rs:107:5 | LL | ..5; | ^^^^ error: statement with no effect - --> $DIR/no_effect.rs:109:5 + --> $DIR/no_effect.rs:108:5 | LL | 5..6; | ^^^^^ error: statement with no effect - --> $DIR/no_effect.rs:110:5 + --> $DIR/no_effect.rs:109:5 | LL | 5..=6; | ^^^^^^ error: statement with no effect - --> $DIR/no_effect.rs:111:5 + --> $DIR/no_effect.rs:110:5 | LL | [42, 55]; | ^^^^^^^^^ error: statement with no effect - --> $DIR/no_effect.rs:112:5 + --> $DIR/no_effect.rs:111:5 | LL | [42, 55][1]; | ^^^^^^^^^^^^ error: statement with no effect - --> $DIR/no_effect.rs:113:5 + --> $DIR/no_effect.rs:112:5 | LL | (42, 55).1; | ^^^^^^^^^^^ error: statement with no effect - --> $DIR/no_effect.rs:114:5 + --> $DIR/no_effect.rs:113:5 | LL | [42; 55]; | ^^^^^^^^^ error: statement with no effect - --> $DIR/no_effect.rs:115:5 + --> $DIR/no_effect.rs:114:5 | LL | [42; 55][13]; | ^^^^^^^^^^^^^ error: statement with no effect - --> $DIR/no_effect.rs:117:5 + --> $DIR/no_effect.rs:116:5 | LL | || x += 5; | ^^^^^^^^^^ error: statement with no effect - --> $DIR/no_effect.rs:119:5 + --> $DIR/no_effect.rs:118:5 | LL | FooString { s: s }; | ^^^^^^^^^^^^^^^^^^^ error: binding to `_` prefixed variable with no side-effect - --> $DIR/no_effect.rs:120:5 + --> $DIR/no_effect.rs:119:5 | LL | let _unused = 1; | ^^^^^^^^^^^^^^^^ @@ -165,22 +159,22 @@ LL | let _unused = 1; = note: `-D clippy::no-effect-underscore-binding` implied by `-D warnings` error: binding to `_` prefixed variable with no side-effect - --> $DIR/no_effect.rs:121:5 + --> $DIR/no_effect.rs:120:5 | LL | let _penguin = || println!("Some helpful closure"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: binding to `_` prefixed variable with no side-effect - --> $DIR/no_effect.rs:122:5 + --> $DIR/no_effect.rs:121:5 | LL | let _duck = Struct { field: 0 }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: binding to `_` prefixed variable with no side-effect - --> $DIR/no_effect.rs:123:5 + --> $DIR/no_effect.rs:122:5 | LL | let _cat = [2, 4, 6, 8][2]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 30 previous errors +error: aborting due to 29 previous errors diff --git a/tests/ui/unnecessary_operation.fixed b/tests/ui/unnecessary_operation.fixed index d37163570ab..65d9c910b82 100644 --- a/tests/ui/unnecessary_operation.fixed +++ b/tests/ui/unnecessary_operation.fixed @@ -1,6 +1,5 @@ // run-rustfix -#![feature(box_syntax)] #![allow(clippy::deref_addrof, dead_code, unused, clippy::no_effect)] #![warn(clippy::unnecessary_operation)] @@ -59,7 +58,6 @@ fn main() { 5;6;get_number(); get_number(); get_number(); - get_number(); 5;get_number(); 42;get_number(); assert!([42, 55].len() > get_usize()); diff --git a/tests/ui/unnecessary_operation.rs b/tests/ui/unnecessary_operation.rs index a14fd4bca0e..4e2acd59f04 100644 --- a/tests/ui/unnecessary_operation.rs +++ b/tests/ui/unnecessary_operation.rs @@ -1,6 +1,5 @@ // run-rustfix -#![feature(box_syntax)] #![allow(clippy::deref_addrof, dead_code, unused, clippy::no_effect)] #![warn(clippy::unnecessary_operation)] @@ -57,7 +56,6 @@ fn main() { *&get_number(); &get_number(); (5, 6, get_number()); - box get_number(); get_number()..; ..get_number(); 5..get_number(); diff --git a/tests/ui/unnecessary_operation.stderr b/tests/ui/unnecessary_operation.stderr index f66d08ecb82..44cf2e01ff7 100644 --- a/tests/ui/unnecessary_operation.stderr +++ b/tests/ui/unnecessary_operation.stderr @@ -1,5 +1,5 @@ error: unnecessary operation - --> $DIR/unnecessary_operation.rs:51:5 + --> $DIR/unnecessary_operation.rs:50:5 | LL | Tuple(get_number()); | ^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` @@ -7,109 +7,103 @@ LL | Tuple(get_number()); = note: `-D clippy::unnecessary-operation` implied by `-D warnings` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:52:5 + --> $DIR/unnecessary_operation.rs:51:5 | LL | Struct { field: get_number() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:53:5 + --> $DIR/unnecessary_operation.rs:52:5 | LL | Struct { ..get_struct() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_struct();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:54:5 + --> $DIR/unnecessary_operation.rs:53:5 | LL | Enum::Tuple(get_number()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:55:5 + --> $DIR/unnecessary_operation.rs:54:5 | LL | Enum::Struct { field: get_number() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:56:5 + --> $DIR/unnecessary_operation.rs:55:5 | LL | 5 + get_number(); | ^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `5;get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:57:5 + --> $DIR/unnecessary_operation.rs:56:5 | LL | *&get_number(); | ^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:58:5 + --> $DIR/unnecessary_operation.rs:57:5 | LL | &get_number(); | ^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:59:5 + --> $DIR/unnecessary_operation.rs:58:5 | LL | (5, 6, get_number()); | ^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `5;6;get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:60:5 - | -LL | box get_number(); - | ^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` - -error: unnecessary operation - --> $DIR/unnecessary_operation.rs:61:5 + --> $DIR/unnecessary_operation.rs:59:5 | LL | get_number()..; | ^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:62:5 + --> $DIR/unnecessary_operation.rs:60:5 | LL | ..get_number(); | ^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:63:5 + --> $DIR/unnecessary_operation.rs:61:5 | LL | 5..get_number(); | ^^^^^^^^^^^^^^^^ help: statement can be reduced to: `5;get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:64:5 + --> $DIR/unnecessary_operation.rs:62:5 | LL | [42, get_number()]; | ^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `42;get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:65:5 + --> $DIR/unnecessary_operation.rs:63:5 | LL | [42, 55][get_usize()]; | ^^^^^^^^^^^^^^^^^^^^^^ help: statement can be written as: `assert!([42, 55].len() > get_usize());` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:66:5 + --> $DIR/unnecessary_operation.rs:64:5 | LL | (42, get_number()).1; | ^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `42;get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:67:5 + --> $DIR/unnecessary_operation.rs:65:5 | LL | [get_number(); 55]; | ^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:68:5 + --> $DIR/unnecessary_operation.rs:66:5 | LL | [42; 55][get_usize()]; | ^^^^^^^^^^^^^^^^^^^^^^ help: statement can be written as: `assert!([42; 55].len() > get_usize());` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:69:5 + --> $DIR/unnecessary_operation.rs:67:5 | LL | / { LL | | get_number() @@ -117,12 +111,12 @@ LL | | }; | |______^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> $DIR/unnecessary_operation.rs:72:5 + --> $DIR/unnecessary_operation.rs:70:5 | LL | / FooString { LL | | s: String::from("blah"), LL | | }; | |______^ help: statement can be reduced to: `String::from("blah");` -error: aborting due to 20 previous errors +error: aborting due to 19 previous errors |