diff options
Diffstat (limited to 'tests')
46 files changed, 1320 insertions, 216 deletions
diff --git a/tests/headers.rs b/tests/headers.rs deleted file mode 100644 index d1f986ef526..00000000000 --- a/tests/headers.rs +++ /dev/null @@ -1,34 +0,0 @@ -use regex::Regex; -use std::fs; -use walkdir::WalkDir; - -#[test] -fn old_test_headers() { - let old_headers = Regex::new( - r"^//( ?\[\w+\])? ?((check|build|run|ignore|aux|only|needs|rustc|unset|no|normalize|run|compile)-|edition|incremental|revisions).*", - ) - .unwrap(); - let mut failed = false; - - for entry in WalkDir::new("tests") { - let entry = entry.unwrap(); - let is_hidden_file = entry - .file_name() - .to_str() - .expect("non-UTF-8 file name") - .starts_with('.'); - if is_hidden_file || !entry.file_type().is_file() { - continue; - } - - let file = fs::read_to_string(entry.path()).unwrap_or_else(|err| panic!("{}: {err}", entry.path().display())); - - if let Some(header) = old_headers.find(&file) { - println!("Found header `{}` in {}", header.as_str(), entry.path().display()); - - failed = true; - } - } - - assert!(!failed, "use `//@foo` style test headers instead"); -} diff --git a/tests/ui/assign_ops.fixed b/tests/ui/assign_ops.fixed index 429c20f95e9..3bc6885d7c3 100644 --- a/tests/ui/assign_ops.fixed +++ b/tests/ui/assign_ops.fixed @@ -1,5 +1,6 @@ #![allow(clippy::useless_vec)] #![warn(clippy::assign_op_pattern)] +#![feature(const_trait_impl, const_ops)] use core::num::Wrapping; use std::ops::{Mul, MulAssign}; @@ -73,3 +74,33 @@ impl MulAssign<i64> for Wrap { *self = *self * rhs } } + +mod issue14871 { + + use std::ops::{Add, AddAssign}; + + pub trait Number: Copy + Add<Self, Output = Self> + AddAssign { + const ZERO: Self; + const ONE: Self; + } + + #[const_trait] + pub trait NumberConstants { + fn constant(value: usize) -> Self; + } + + impl<T> const NumberConstants for T + where + T: Number + ~const core::ops::Add, + { + fn constant(value: usize) -> Self { + let mut res = Self::ZERO; + let mut count = 0; + while count < value { + res = res + Self::ONE; + count += 1; + } + res + } + } +} diff --git a/tests/ui/assign_ops.rs b/tests/ui/assign_ops.rs index 480ff07f150..f1f8f9daff9 100644 --- a/tests/ui/assign_ops.rs +++ b/tests/ui/assign_ops.rs @@ -1,5 +1,6 @@ #![allow(clippy::useless_vec)] #![warn(clippy::assign_op_pattern)] +#![feature(const_trait_impl, const_ops)] use core::num::Wrapping; use std::ops::{Mul, MulAssign}; @@ -73,3 +74,33 @@ impl MulAssign<i64> for Wrap { *self = *self * rhs } } + +mod issue14871 { + + use std::ops::{Add, AddAssign}; + + pub trait Number: Copy + Add<Self, Output = Self> + AddAssign { + const ZERO: Self; + const ONE: Self; + } + + #[const_trait] + pub trait NumberConstants { + fn constant(value: usize) -> Self; + } + + impl<T> const NumberConstants for T + where + T: Number + ~const core::ops::Add, + { + fn constant(value: usize) -> Self { + let mut res = Self::ZERO; + let mut count = 0; + while count < value { + res = res + Self::ONE; + count += 1; + } + res + } + } +} diff --git a/tests/ui/assign_ops.stderr b/tests/ui/assign_ops.stderr index 881a333fbe4..c5e698b3ee1 100644 --- a/tests/ui/assign_ops.stderr +++ b/tests/ui/assign_ops.stderr @@ -1,5 +1,5 @@ error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:9:5 + --> tests/ui/assign_ops.rs:10:5 | LL | a = a + 1; | ^^^^^^^^^ help: replace it with: `a += 1` @@ -8,67 +8,67 @@ LL | a = a + 1; = help: to override `-D warnings` add `#[allow(clippy::assign_op_pattern)]` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:11:5 + --> tests/ui/assign_ops.rs:12:5 | LL | a = 1 + a; | ^^^^^^^^^ help: replace it with: `a += 1` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:13:5 + --> tests/ui/assign_ops.rs:14:5 | LL | a = a - 1; | ^^^^^^^^^ help: replace it with: `a -= 1` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:15:5 + --> tests/ui/assign_ops.rs:16:5 | LL | a = a * 99; | ^^^^^^^^^^ help: replace it with: `a *= 99` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:17:5 + --> tests/ui/assign_ops.rs:18:5 | LL | a = 42 * a; | ^^^^^^^^^^ help: replace it with: `a *= 42` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:19:5 + --> tests/ui/assign_ops.rs:20:5 | LL | a = a / 2; | ^^^^^^^^^ help: replace it with: `a /= 2` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:21:5 + --> tests/ui/assign_ops.rs:22:5 | LL | a = a % 5; | ^^^^^^^^^ help: replace it with: `a %= 5` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:23:5 + --> tests/ui/assign_ops.rs:24:5 | LL | a = a & 1; | ^^^^^^^^^ help: replace it with: `a &= 1` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:30:5 + --> tests/ui/assign_ops.rs:31:5 | LL | s = s + "bla"; | ^^^^^^^^^^^^^ help: replace it with: `s += "bla"` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:35:5 + --> tests/ui/assign_ops.rs:36:5 | LL | a = a + Wrapping(1u32); | ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a += Wrapping(1u32)` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:38:5 + --> tests/ui/assign_ops.rs:39:5 | LL | v[0] = v[0] + v[1]; | ^^^^^^^^^^^^^^^^^^ help: replace it with: `v[0] += v[1]` error: manual implementation of an assign operation - --> tests/ui/assign_ops.rs:51:5 + --> tests/ui/assign_ops.rs:52:5 | LL | buf = buf + cows.clone(); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `buf += cows.clone()` diff --git a/tests/ui/dbg_macro/dbg_macro.fixed b/tests/ui/dbg_macro/dbg_macro.fixed index 3b9dee81898..5993c2faf0d 100644 --- a/tests/ui/dbg_macro/dbg_macro.fixed +++ b/tests/ui/dbg_macro/dbg_macro.fixed @@ -123,3 +123,19 @@ mod issue12131 { //~^ dbg_macro } } + +mod issue14914 { + use std::future::Future; + + fn takes_async_fn<F, Fut>(_f: F) + where + F: FnOnce(i32) -> Fut, + Fut: Future<Output = i32>, + { + } + + fn should_not_panic() { + takes_async_fn(async |val| val); + //~^ dbg_macro + } +} diff --git a/tests/ui/dbg_macro/dbg_macro.rs b/tests/ui/dbg_macro/dbg_macro.rs index 1dbbc6fe984..58d7e106e23 100644 --- a/tests/ui/dbg_macro/dbg_macro.rs +++ b/tests/ui/dbg_macro/dbg_macro.rs @@ -123,3 +123,19 @@ mod issue12131 { //~^ dbg_macro } } + +mod issue14914 { + use std::future::Future; + + fn takes_async_fn<F, Fut>(_f: F) + where + F: FnOnce(i32) -> Fut, + Fut: Future<Output = i32>, + { + } + + fn should_not_panic() { + takes_async_fn(async |val| dbg!(val)); + //~^ dbg_macro + } +} diff --git a/tests/ui/dbg_macro/dbg_macro.stderr b/tests/ui/dbg_macro/dbg_macro.stderr index f1412023cc8..5a65b38a85c 100644 --- a/tests/ui/dbg_macro/dbg_macro.stderr +++ b/tests/ui/dbg_macro/dbg_macro.stderr @@ -230,5 +230,17 @@ LL - print!("{}", dbg!(s)); LL + print!("{}", s); | -error: aborting due to 19 previous errors +error: the `dbg!` macro is intended as a debugging tool + --> tests/ui/dbg_macro/dbg_macro.rs:138:36 + | +LL | takes_async_fn(async |val| dbg!(val)); + | ^^^^^^^^^ + | +help: remove the invocation before committing it to a version control system + | +LL - takes_async_fn(async |val| dbg!(val)); +LL + takes_async_fn(async |val| val); + | + +error: aborting due to 20 previous errors diff --git a/tests/ui/derive.rs b/tests/ui/derive.rs index e334203c7b2..2c5fa0be975 100644 --- a/tests/ui/derive.rs +++ b/tests/ui/derive.rs @@ -9,7 +9,6 @@ #![expect(incomplete_features)] // `unsafe_fields` is incomplete for the time being #![feature(unsafe_fields)] // `clone()` cannot be derived automatically on unsafe fields - #[derive(Copy)] struct Qux; diff --git a/tests/ui/derive.stderr b/tests/ui/derive.stderr index 9004ced6849..ff2c24ff48e 100644 --- a/tests/ui/derive.stderr +++ b/tests/ui/derive.stderr @@ -1,5 +1,5 @@ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:16:1 + --> tests/ui/derive.rs:15:1 | LL | / impl Clone for Qux { LL | | @@ -10,7 +10,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:16:1 + --> tests/ui/derive.rs:15:1 | LL | / impl Clone for Qux { LL | | @@ -23,7 +23,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::expl_impl_clone_on_copy)]` error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:42:1 + --> tests/ui/derive.rs:41:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -34,7 +34,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:42:1 + --> tests/ui/derive.rs:41:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -45,7 +45,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:55:1 + --> tests/ui/derive.rs:54:1 | LL | / impl Clone for BigArray { LL | | @@ -56,7 +56,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:55:1 + --> tests/ui/derive.rs:54:1 | LL | / impl Clone for BigArray { LL | | @@ -67,7 +67,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:68:1 + --> tests/ui/derive.rs:67:1 | LL | / impl Clone for FnPtr { LL | | @@ -78,7 +78,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:68:1 + --> tests/ui/derive.rs:67:1 | LL | / impl Clone for FnPtr { LL | | @@ -89,7 +89,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:90:1 + --> tests/ui/derive.rs:89:1 | LL | / impl<T: Clone> Clone for Generic2<T> { LL | | @@ -100,7 +100,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:90:1 + --> tests/ui/derive.rs:89:1 | LL | / impl<T: Clone> Clone for Generic2<T> { LL | | diff --git a/tests/ui/doc/doc_markdown-issue_13097.fixed b/tests/ui/doc/doc_markdown-issue_13097.fixed index fb0f40b34a4..e0136584f3d 100644 --- a/tests/ui/doc/doc_markdown-issue_13097.fixed +++ b/tests/ui/doc/doc_markdown-issue_13097.fixed @@ -1,11 +1,37 @@ -// This test checks that words starting with capital letters and ending with "ified" don't -// trigger the lint. - #![deny(clippy::doc_markdown)] +#![allow(clippy::doc_lazy_continuation)] + +mod issue13097 { + // This test checks that words starting with capital letters and ending with "ified" don't + // trigger the lint. + pub enum OutputFormat { + /// `HumaNified` + //~^ ERROR: item in documentation is missing backticks + Plain, + // Should not warn! + /// JSONified console output + Json, + } +} +#[rustfmt::skip] pub enum OutputFormat { - /// `HumaNified` - //~^ ERROR: item in documentation is missing backticks + /** + * `HumaNified` + //~^ ERROR: item in documentation is missing backticks + * Before \u{08888} `HumaNified` \{u08888} After + //~^ ERROR: item in documentation is missing backticks + * meow meow \[`meow_meow`\] meow meow? + //~^ ERROR: item in documentation is missing backticks + * \u{08888} `meow_meow` \[meow meow] meow? + //~^ ERROR: item in documentation is missing backticks + * Above + * \u{08888} + * \[hi\](<https://example.com>) `HumaNified` \[example](<https://example.com>) + //~^ ERROR: item in documentation is missing backticks + * \u{08888} + * Below + */ Plain, // Should not warn! /// JSONified console output diff --git a/tests/ui/doc/doc_markdown-issue_13097.rs b/tests/ui/doc/doc_markdown-issue_13097.rs index 8c1e1a3cd6c..2e89fe6c56b 100644 --- a/tests/ui/doc/doc_markdown-issue_13097.rs +++ b/tests/ui/doc/doc_markdown-issue_13097.rs @@ -1,11 +1,37 @@ -// This test checks that words starting with capital letters and ending with "ified" don't -// trigger the lint. - #![deny(clippy::doc_markdown)] +#![allow(clippy::doc_lazy_continuation)] + +mod issue13097 { + // This test checks that words starting with capital letters and ending with "ified" don't + // trigger the lint. + pub enum OutputFormat { + /// HumaNified + //~^ ERROR: item in documentation is missing backticks + Plain, + // Should not warn! + /// JSONified console output + Json, + } +} +#[rustfmt::skip] pub enum OutputFormat { - /// HumaNified - //~^ ERROR: item in documentation is missing backticks + /** + * HumaNified + //~^ ERROR: item in documentation is missing backticks + * Before \u{08888} HumaNified \{u08888} After + //~^ ERROR: item in documentation is missing backticks + * meow meow \[meow_meow\] meow meow? + //~^ ERROR: item in documentation is missing backticks + * \u{08888} meow_meow \[meow meow] meow? + //~^ ERROR: item in documentation is missing backticks + * Above + * \u{08888} + * \[hi\](<https://example.com>) HumaNified \[example](<https://example.com>) + //~^ ERROR: item in documentation is missing backticks + * \u{08888} + * Below + */ Plain, // Should not warn! /// JSONified console output diff --git a/tests/ui/doc/doc_markdown-issue_13097.stderr b/tests/ui/doc/doc_markdown-issue_13097.stderr index 65b8f2ed80b..cea788301d4 100644 --- a/tests/ui/doc/doc_markdown-issue_13097.stderr +++ b/tests/ui/doc/doc_markdown-issue_13097.stderr @@ -1,19 +1,79 @@ error: item in documentation is missing backticks - --> tests/ui/doc/doc_markdown-issue_13097.rs:7:9 + --> tests/ui/doc/doc_markdown-issue_13097.rs:8:13 | -LL | /// HumaNified - | ^^^^^^^^^^ +LL | /// HumaNified + | ^^^^^^^^^^ | note: the lint level is defined here - --> tests/ui/doc/doc_markdown-issue_13097.rs:4:9 + --> tests/ui/doc/doc_markdown-issue_13097.rs:1:9 | LL | #![deny(clippy::doc_markdown)] | ^^^^^^^^^^^^^^^^^^^^ help: try | -LL - /// HumaNified -LL + /// `HumaNified` +LL - /// HumaNified +LL + /// `HumaNified` | -error: aborting due to 1 previous error +error: item in documentation is missing backticks + --> tests/ui/doc/doc_markdown-issue_13097.rs:20:8 + | +LL | * HumaNified + | ^^^^^^^^^^ + | +help: try + | +LL - * HumaNified +LL + * `HumaNified` + | + +error: item in documentation is missing backticks + --> tests/ui/doc/doc_markdown-issue_13097.rs:22:25 + | +LL | * Before \u{08888} HumaNified \{u08888} After + | ^^^^^^^^^^ + | +help: try + | +LL - * Before \u{08888} HumaNified \{u08888} After +LL + * Before \u{08888} `HumaNified` \{u08888} After + | + +error: item in documentation is missing backticks + --> tests/ui/doc/doc_markdown-issue_13097.rs:24:20 + | +LL | * meow meow \[meow_meow\] meow meow? + | ^^^^^^^^^ + | +help: try + | +LL - * meow meow \[meow_meow\] meow meow? +LL + * meow meow \[`meow_meow`\] meow meow? + | + +error: item in documentation is missing backticks + --> tests/ui/doc/doc_markdown-issue_13097.rs:26:18 + | +LL | * \u{08888} meow_meow \[meow meow] meow? + | ^^^^^^^^^ + | +help: try + | +LL - * \u{08888} meow_meow \[meow meow] meow? +LL + * \u{08888} `meow_meow` \[meow meow] meow? + | + +error: item in documentation is missing backticks + --> tests/ui/doc/doc_markdown-issue_13097.rs:30:38 + | +LL | * \[hi\](<https://example.com>) HumaNified \[example](<https://example.com>) + | ^^^^^^^^^^ + | +help: try + | +LL - * \[hi\](<https://example.com>) HumaNified \[example](<https://example.com>) +LL + * \[hi\](<https://example.com>) `HumaNified` \[example](<https://example.com>) + | + +error: aborting due to 6 previous errors diff --git a/tests/ui/explicit_deref_methods.fixed b/tests/ui/explicit_deref_methods.fixed index 619329a6ade..52c4d1b1f30 100644 --- a/tests/ui/explicit_deref_methods.fixed +++ b/tests/ui/explicit_deref_methods.fixed @@ -81,12 +81,10 @@ fn main() { let b: String = concat(just_return(a)); //~^ explicit_deref_methods - let b: &str = &**a; - //~^ explicit_deref_methods + let b: &str = a.deref().deref(); let opt_a = Some(a.clone()); - let b = &*opt_a.unwrap(); - //~^ explicit_deref_methods + let b = opt_a.unwrap().deref(); Aaa::deref(&Aaa); Aaa::deref_mut(&mut Aaa); diff --git a/tests/ui/explicit_deref_methods.rs b/tests/ui/explicit_deref_methods.rs index 9f2d513283c..706d6cb2b79 100644 --- a/tests/ui/explicit_deref_methods.rs +++ b/tests/ui/explicit_deref_methods.rs @@ -82,11 +82,9 @@ fn main() { //~^ explicit_deref_methods let b: &str = a.deref().deref(); - //~^ explicit_deref_methods let opt_a = Some(a.clone()); let b = opt_a.unwrap().deref(); - //~^ explicit_deref_methods Aaa::deref(&Aaa); Aaa::deref_mut(&mut Aaa); diff --git a/tests/ui/explicit_deref_methods.stderr b/tests/ui/explicit_deref_methods.stderr index a81e2f60317..5036884366c 100644 --- a/tests/ui/explicit_deref_methods.stderr +++ b/tests/ui/explicit_deref_methods.stderr @@ -56,40 +56,28 @@ LL | let b: String = concat(just_return(a).deref()); | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `just_return(a)` error: explicit `deref` method call - --> tests/ui/explicit_deref_methods.rs:84:19 - | -LL | let b: &str = a.deref().deref(); - | ^^^^^^^^^^^^^^^^^ help: try: `&**a` - -error: explicit `deref` method call - --> tests/ui/explicit_deref_methods.rs:88:13 - | -LL | let b = opt_a.unwrap().deref(); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*opt_a.unwrap()` - -error: explicit `deref` method call - --> tests/ui/explicit_deref_methods.rs:123:31 + --> tests/ui/explicit_deref_methods.rs:121:31 | LL | let b: &str = expr_deref!(a.deref()); | ^^^^^^^^^ help: try: `&*a` error: explicit `deref` method call - --> tests/ui/explicit_deref_methods.rs:141:14 + --> tests/ui/explicit_deref_methods.rs:139:14 | LL | let _ = &Deref::deref(&"foo"); | ^^^^^^^^^^^^^^^^^^^^ help: try: `*&"foo"` error: explicit `deref_mut` method call - --> tests/ui/explicit_deref_methods.rs:143:14 + --> tests/ui/explicit_deref_methods.rs:141:14 | LL | let _ = &DerefMut::deref_mut(&mut x); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut **&mut x` error: explicit `deref_mut` method call - --> tests/ui/explicit_deref_methods.rs:144:14 + --> tests/ui/explicit_deref_methods.rs:142:14 | LL | let _ = &DerefMut::deref_mut((&mut &mut x).deref_mut()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut ***(&mut &mut x)` -error: aborting due to 15 previous errors +error: aborting due to 13 previous errors diff --git a/tests/ui/manual_find_fixable.fixed b/tests/ui/manual_find_fixable.fixed index 5e6849a4dfb..01b3ebacbeb 100644 --- a/tests/ui/manual_find_fixable.fixed +++ b/tests/ui/manual_find_fixable.fixed @@ -179,3 +179,13 @@ fn two_bindings(v: Vec<(u8, u8)>) -> Option<u8> { } fn main() {} + +mod issue14826 { + fn adjust_fixable(needle: &str) -> Option<&'static str> { + ["foo", "bar"].iter().find(|&candidate| candidate.eq_ignore_ascii_case(needle)).map(|v| v as _) + } + + fn adjust_unfixable(needle: &str) -> Option<*const str> { + ["foo", "bar"].iter().find(|&&candidate| candidate.eq_ignore_ascii_case(needle)).copied().map(|v| v as _) + } +} diff --git a/tests/ui/manual_find_fixable.rs b/tests/ui/manual_find_fixable.rs index 08a7dd2c6ee..ce62a4beba1 100644 --- a/tests/ui/manual_find_fixable.rs +++ b/tests/ui/manual_find_fixable.rs @@ -251,3 +251,25 @@ fn two_bindings(v: Vec<(u8, u8)>) -> Option<u8> { } fn main() {} + +mod issue14826 { + fn adjust_fixable(needle: &str) -> Option<&'static str> { + for candidate in &["foo", "bar"] { + //~^ manual_find + if candidate.eq_ignore_ascii_case(needle) { + return Some(candidate); + } + } + None + } + + fn adjust_unfixable(needle: &str) -> Option<*const str> { + for &candidate in &["foo", "bar"] { + //~^ manual_find + if candidate.eq_ignore_ascii_case(needle) { + return Some(candidate); + } + } + None + } +} diff --git a/tests/ui/manual_find_fixable.stderr b/tests/ui/manual_find_fixable.stderr index afa453c5a87..020635d90bb 100644 --- a/tests/ui/manual_find_fixable.stderr +++ b/tests/ui/manual_find_fixable.stderr @@ -139,5 +139,27 @@ LL | | return Some(x); LL | | None | |____________^ help: replace with an iterator: `arr.into_iter().find(|&x| x < 1)` -error: aborting due to 12 previous errors +error: manual implementation of `Iterator::find` + --> tests/ui/manual_find_fixable.rs:257:9 + | +LL | / for candidate in &["foo", "bar"] { +LL | | +LL | | if candidate.eq_ignore_ascii_case(needle) { +LL | | return Some(candidate); +... | +LL | | None + | |____________^ help: replace with an iterator: `["foo", "bar"].iter().find(|&candidate| candidate.eq_ignore_ascii_case(needle)).map(|v| v as _)` + +error: manual implementation of `Iterator::find` + --> tests/ui/manual_find_fixable.rs:267:9 + | +LL | / for &candidate in &["foo", "bar"] { +LL | | +LL | | if candidate.eq_ignore_ascii_case(needle) { +LL | | return Some(candidate); +... | +LL | | None + | |____________^ help: replace with an iterator: `["foo", "bar"].iter().find(|&&candidate| candidate.eq_ignore_ascii_case(needle)).copied().map(|v| v as _)` + +error: aborting due to 14 previous errors diff --git a/tests/ui/manual_flatten.rs b/tests/ui/manual_flatten.rs index 97f35c36e24..f1a0053ef38 100644 --- a/tests/ui/manual_flatten.rs +++ b/tests/ui/manual_flatten.rs @@ -123,6 +123,13 @@ fn main() { println!("{}", n); } + // Using nested `Some` pattern should not trigger the lint + for n in vec![Some((1, Some(2)))] { + if let Some((_, Some(n))) = n { + println!("{}", n); + } + } + run_unformatted_tests(); } diff --git a/tests/ui/manual_flatten.stderr b/tests/ui/manual_flatten.stderr index 5ab25658017..9a846fe17f3 100644 --- a/tests/ui/manual_flatten.stderr +++ b/tests/ui/manual_flatten.stderr @@ -178,7 +178,7 @@ LL | | } | |_________^ error: unnecessary `if let` since only the `Some` variant of the iterator element is used - --> tests/ui/manual_flatten.rs:132:5 + --> tests/ui/manual_flatten.rs:139:5 | LL | / for n in vec![ LL | | @@ -189,7 +189,7 @@ LL | | } | |_____^ | help: remove the `if let` statement in the for loop and then... - --> tests/ui/manual_flatten.rs:139:9 + --> tests/ui/manual_flatten.rs:146:9 | LL | / if let Some(n) = n { LL | | println!("{:?}", n); diff --git a/tests/ui/manual_is_variant_and.fixed b/tests/ui/manual_is_variant_and.fixed index c9c184561dd..18a72188ab5 100644 --- a/tests/ui/manual_is_variant_and.fixed +++ b/tests/ui/manual_is_variant_and.fixed @@ -4,6 +4,44 @@ #[macro_use] extern crate option_helpers; +struct Foo<T>(T); + +impl<T> Foo<T> { + fn map<F: FnMut(T) -> bool>(self, mut f: F) -> Option<bool> { + Some(f(self.0)) + } +} + +fn foo() -> Option<bool> { + Some(true) +} + +macro_rules! some_true { + () => { + Some(true) + }; +} +macro_rules! some_false { + () => { + Some(false) + }; +} + +macro_rules! mac { + (some $e:expr) => { + Some($e) + }; + (some_map $e:expr) => { + Some($e).map(|x| x % 2 == 0) + }; + (map $e:expr) => { + $e.map(|x| x % 2 == 0) + }; + (eq $a:expr, $b:expr) => { + $a == $b + }; +} + #[rustfmt::skip] fn option_methods() { let opt = Some(1); @@ -21,6 +59,15 @@ fn option_methods() { let _ = opt .is_some_and(|x| x > 1); + let _ = Some(2).is_some_and(|x| x % 2 == 0); + //~^ manual_is_variant_and + let _ = Some(2).is_none_or(|x| x % 2 == 0); + //~^ manual_is_variant_and + let _ = Some(2).is_some_and(|x| x % 2 == 0); + //~^ manual_is_variant_and + let _ = Some(2).is_none_or(|x| x % 2 == 0); + //~^ manual_is_variant_and + // won't fix because the return type of the closure is not `bool` let _ = opt.map(|x| x + 1).unwrap_or_default(); @@ -28,6 +75,14 @@ fn option_methods() { let _ = opt2.is_some_and(char::is_alphanumeric); // should lint //~^ manual_is_variant_and let _ = opt_map!(opt2, |x| x == 'a').unwrap_or_default(); // should not lint + + // Should not lint. + let _ = Foo::<u32>(0).map(|x| x % 2 == 0) == Some(true); + let _ = Some(2).map(|x| x % 2 == 0) != foo(); + let _ = mac!(eq Some(2).map(|x| x % 2 == 0), Some(true)); + let _ = mac!(some 2).map(|x| x % 2 == 0) == Some(true); + let _ = mac!(some_map 2) == Some(true); + let _ = mac!(map Some(2)) == Some(true); } #[rustfmt::skip] @@ -41,6 +96,13 @@ fn result_methods() { }); let _ = res.is_ok_and(|x| x > 1); + let _ = Ok::<usize, ()>(2).is_ok_and(|x| x % 2 == 0); + //~^ manual_is_variant_and + let _ = !Ok::<usize, ()>(2).is_ok_and(|x| x % 2 == 0); + //~^ manual_is_variant_and + let _ = !Ok::<usize, ()>(2).is_ok_and(|x| x % 2 == 0); + //~^ manual_is_variant_and + // won't fix because the return type of the closure is not `bool` let _ = res.map(|x| x + 1).unwrap_or_default(); diff --git a/tests/ui/manual_is_variant_and.rs b/tests/ui/manual_is_variant_and.rs index 52c7b56804c..a92f7c04369 100644 --- a/tests/ui/manual_is_variant_and.rs +++ b/tests/ui/manual_is_variant_and.rs @@ -4,6 +4,44 @@ #[macro_use] extern crate option_helpers; +struct Foo<T>(T); + +impl<T> Foo<T> { + fn map<F: FnMut(T) -> bool>(self, mut f: F) -> Option<bool> { + Some(f(self.0)) + } +} + +fn foo() -> Option<bool> { + Some(true) +} + +macro_rules! some_true { + () => { + Some(true) + }; +} +macro_rules! some_false { + () => { + Some(false) + }; +} + +macro_rules! mac { + (some $e:expr) => { + Some($e) + }; + (some_map $e:expr) => { + Some($e).map(|x| x % 2 == 0) + }; + (map $e:expr) => { + $e.map(|x| x % 2 == 0) + }; + (eq $a:expr, $b:expr) => { + $a == $b + }; +} + #[rustfmt::skip] fn option_methods() { let opt = Some(1); @@ -27,6 +65,15 @@ fn option_methods() { //~^ manual_is_variant_and .unwrap_or_default(); + let _ = Some(2).map(|x| x % 2 == 0) == Some(true); + //~^ manual_is_variant_and + let _ = Some(2).map(|x| x % 2 == 0) != Some(true); + //~^ manual_is_variant_and + let _ = Some(2).map(|x| x % 2 == 0) == some_true!(); + //~^ manual_is_variant_and + let _ = Some(2).map(|x| x % 2 == 0) != some_false!(); + //~^ manual_is_variant_and + // won't fix because the return type of the closure is not `bool` let _ = opt.map(|x| x + 1).unwrap_or_default(); @@ -34,6 +81,14 @@ fn option_methods() { let _ = opt2.map(char::is_alphanumeric).unwrap_or_default(); // should lint //~^ manual_is_variant_and let _ = opt_map!(opt2, |x| x == 'a').unwrap_or_default(); // should not lint + + // Should not lint. + let _ = Foo::<u32>(0).map(|x| x % 2 == 0) == Some(true); + let _ = Some(2).map(|x| x % 2 == 0) != foo(); + let _ = mac!(eq Some(2).map(|x| x % 2 == 0), Some(true)); + let _ = mac!(some 2).map(|x| x % 2 == 0) == Some(true); + let _ = mac!(some_map 2) == Some(true); + let _ = mac!(map Some(2)) == Some(true); } #[rustfmt::skip] @@ -50,6 +105,13 @@ fn result_methods() { //~^ manual_is_variant_and .unwrap_or_default(); + let _ = Ok::<usize, ()>(2).map(|x| x % 2 == 0) == Ok(true); + //~^ manual_is_variant_and + let _ = Ok::<usize, ()>(2).map(|x| x % 2 == 0) != Ok(true); + //~^ manual_is_variant_and + let _ = Ok::<usize, ()>(2).map(|x| x % 2 == 0) != Ok(true); + //~^ manual_is_variant_and + // won't fix because the return type of the closure is not `bool` let _ = res.map(|x| x + 1).unwrap_or_default(); diff --git a/tests/ui/manual_is_variant_and.stderr b/tests/ui/manual_is_variant_and.stderr index a4fa500580d..1fb437a8bc7 100644 --- a/tests/ui/manual_is_variant_and.stderr +++ b/tests/ui/manual_is_variant_and.stderr @@ -1,5 +1,5 @@ error: called `map(<f>).unwrap_or_default()` on an `Option` value - --> tests/ui/manual_is_variant_and.rs:13:17 + --> tests/ui/manual_is_variant_and.rs:51:17 | LL | let _ = opt.map(|x| x > 1) | _________________^ @@ -11,7 +11,7 @@ LL | | .unwrap_or_default(); = help: to override `-D warnings` add `#[allow(clippy::manual_is_variant_and)]` error: called `map(<f>).unwrap_or_default()` on an `Option` value - --> tests/ui/manual_is_variant_and.rs:18:17 + --> tests/ui/manual_is_variant_and.rs:56:17 | LL | let _ = opt.map(|x| { | _________________^ @@ -30,13 +30,13 @@ LL ~ }); | error: called `map(<f>).unwrap_or_default()` on an `Option` value - --> tests/ui/manual_is_variant_and.rs:23:17 + --> tests/ui/manual_is_variant_and.rs:61:17 | LL | let _ = opt.map(|x| x > 1).unwrap_or_default(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `is_some_and(|x| x > 1)` error: called `map(<f>).unwrap_or_default()` on an `Option` value - --> tests/ui/manual_is_variant_and.rs:26:10 + --> tests/ui/manual_is_variant_and.rs:64:10 | LL | .map(|x| x > 1) | __________^ @@ -44,14 +44,38 @@ LL | | LL | | .unwrap_or_default(); | |____________________________^ help: use: `is_some_and(|x| x > 1)` +error: called `.map() == Some()` + --> tests/ui/manual_is_variant_and.rs:68:13 + | +LL | let _ = Some(2).map(|x| x % 2 == 0) == Some(true); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `Some(2).is_some_and(|x| x % 2 == 0)` + +error: called `.map() != Some()` + --> tests/ui/manual_is_variant_and.rs:70:13 + | +LL | let _ = Some(2).map(|x| x % 2 == 0) != Some(true); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `Some(2).is_none_or(|x| x % 2 == 0)` + +error: called `.map() == Some()` + --> tests/ui/manual_is_variant_and.rs:72:13 + | +LL | let _ = Some(2).map(|x| x % 2 == 0) == some_true!(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `Some(2).is_some_and(|x| x % 2 == 0)` + +error: called `.map() != Some()` + --> tests/ui/manual_is_variant_and.rs:74:13 + | +LL | let _ = Some(2).map(|x| x % 2 == 0) != some_false!(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `Some(2).is_none_or(|x| x % 2 == 0)` + error: called `map(<f>).unwrap_or_default()` on an `Option` value - --> tests/ui/manual_is_variant_and.rs:34:18 + --> tests/ui/manual_is_variant_and.rs:81:18 | LL | let _ = opt2.map(char::is_alphanumeric).unwrap_or_default(); // should lint | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `is_some_and(char::is_alphanumeric)` error: called `map(<f>).unwrap_or_default()` on a `Result` value - --> tests/ui/manual_is_variant_and.rs:44:17 + --> tests/ui/manual_is_variant_and.rs:99:17 | LL | let _ = res.map(|x| { | _________________^ @@ -70,7 +94,7 @@ LL ~ }); | error: called `map(<f>).unwrap_or_default()` on a `Result` value - --> tests/ui/manual_is_variant_and.rs:49:17 + --> tests/ui/manual_is_variant_and.rs:104:17 | LL | let _ = res.map(|x| x > 1) | _________________^ @@ -78,11 +102,29 @@ LL | | LL | | .unwrap_or_default(); | |____________________________^ help: use: `is_ok_and(|x| x > 1)` +error: called `.map() == Ok()` + --> tests/ui/manual_is_variant_and.rs:108:13 + | +LL | let _ = Ok::<usize, ()>(2).map(|x| x % 2 == 0) == Ok(true); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `Ok::<usize, ()>(2).is_ok_and(|x| x % 2 == 0)` + +error: called `.map() != Ok()` + --> tests/ui/manual_is_variant_and.rs:110:13 + | +LL | let _ = Ok::<usize, ()>(2).map(|x| x % 2 == 0) != Ok(true); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `!Ok::<usize, ()>(2).is_ok_and(|x| x % 2 == 0)` + +error: called `.map() != Ok()` + --> tests/ui/manual_is_variant_and.rs:112:13 + | +LL | let _ = Ok::<usize, ()>(2).map(|x| x % 2 == 0) != Ok(true); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `!Ok::<usize, ()>(2).is_ok_and(|x| x % 2 == 0)` + error: called `map(<f>).unwrap_or_default()` on a `Result` value - --> tests/ui/manual_is_variant_and.rs:57:18 + --> tests/ui/manual_is_variant_and.rs:119:18 | LL | let _ = res2.map(char::is_alphanumeric).unwrap_or_default(); // should lint | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `is_ok_and(char::is_alphanumeric)` -error: aborting due to 8 previous errors +error: aborting due to 15 previous errors diff --git a/tests/ui/needless_borrow.fixed b/tests/ui/needless_borrow.fixed index d7d344452c5..54cad2e393f 100644 --- a/tests/ui/needless_borrow.fixed +++ b/tests/ui/needless_borrow.fixed @@ -107,9 +107,6 @@ fn main() { let x = (1, 2); let _ = x.0; //~^ needless_borrow - let x = &x as *const (i32, i32); - let _ = unsafe { (*x).0 }; - //~^ needless_borrow // Issue #8367 trait Foo { @@ -289,3 +286,15 @@ fn issue_12268() { // compiler } + +fn issue_14743<T>(slice: &[T]) { + let _ = slice.len(); + //~^ needless_borrow + + let slice = slice as *const [T]; + let _ = unsafe { (&*slice).len() }; + + // Check that rustc would actually warn if Clippy had suggested removing the reference + #[expect(dangerous_implicit_autorefs)] + let _ = unsafe { (*slice).len() }; +} diff --git a/tests/ui/needless_borrow.rs b/tests/ui/needless_borrow.rs index 1f05b90b472..b698c6bfc96 100644 --- a/tests/ui/needless_borrow.rs +++ b/tests/ui/needless_borrow.rs @@ -107,9 +107,6 @@ fn main() { let x = (1, 2); let _ = (&x).0; //~^ needless_borrow - let x = &x as *const (i32, i32); - let _ = unsafe { (&*x).0 }; - //~^ needless_borrow // Issue #8367 trait Foo { @@ -289,3 +286,15 @@ fn issue_12268() { // compiler } + +fn issue_14743<T>(slice: &[T]) { + let _ = (&slice).len(); + //~^ needless_borrow + + let slice = slice as *const [T]; + let _ = unsafe { (&*slice).len() }; + + // Check that rustc would actually warn if Clippy had suggested removing the reference + #[expect(dangerous_implicit_autorefs)] + let _ = unsafe { (*slice).len() }; +} diff --git a/tests/ui/needless_borrow.stderr b/tests/ui/needless_borrow.stderr index b036b1e47d1..172d36bd73a 100644 --- a/tests/ui/needless_borrow.stderr +++ b/tests/ui/needless_borrow.stderr @@ -103,71 +103,71 @@ error: this expression borrows a value the compiler would automatically borrow LL | let _ = (&x).0; | ^^^^ help: change this to: `x` -error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:111:22 - | -LL | let _ = unsafe { (&*x).0 }; - | ^^^^^ help: change this to: `(*x)` - error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:122:5 + --> tests/ui/needless_borrow.rs:119:5 | LL | (&&()).foo(); | ^^^^^^ help: change this to: `(&())` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:132:5 + --> tests/ui/needless_borrow.rs:129:5 | LL | (&&5).foo(); | ^^^^^ help: change this to: `(&5)` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:159:23 + --> tests/ui/needless_borrow.rs:156:23 | LL | let x: (&str,) = (&"",); | ^^^ help: change this to: `""` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:202:13 + --> tests/ui/needless_borrow.rs:199:13 | LL | (&self.f)() | ^^^^^^^^^ help: change this to: `(self.f)` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:212:13 + --> tests/ui/needless_borrow.rs:209:13 | LL | (&mut self.f)() | ^^^^^^^^^^^^^ help: change this to: `(self.f)` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:250:22 + --> tests/ui/needless_borrow.rs:247:22 | LL | let _ = &mut (&mut { x.u }).x; | ^^^^^^^^^^^^^^ help: change this to: `{ x.u }` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:258:22 + --> tests/ui/needless_borrow.rs:255:22 | LL | let _ = &mut (&mut { x.u }).x; | ^^^^^^^^^^^^^^ help: change this to: `{ x.u }` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:263:22 + --> tests/ui/needless_borrow.rs:260:22 | LL | let _ = &mut (&mut x.u).x; | ^^^^^^^^^^ help: change this to: `x.u` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:265:22 + --> tests/ui/needless_borrow.rs:262:22 | LL | let _ = &mut (&mut { x.u }).x; | ^^^^^^^^^^^^^^ help: change this to: `{ x.u }` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:287:23 + --> tests/ui/needless_borrow.rs:284:23 | LL | option.unwrap_or((&x.0,)); | ^^^^ help: change this to: `x.0` +error: this expression creates a reference which is immediately dereferenced by the compiler + --> tests/ui/needless_borrow.rs:291:13 + | +LL | let _ = (&slice).len(); + | ^^^^^^^^ help: change this to: `slice` + error: aborting due to 28 previous errors diff --git a/tests/ui/needless_doc_main.rs b/tests/ui/needless_doc_main.rs index cf01cae2e8f..8894ab0285d 100644 --- a/tests/ui/needless_doc_main.rs +++ b/tests/ui/needless_doc_main.rs @@ -9,7 +9,7 @@ /// unimplemented!(); /// } /// ``` -/// +/// /// With an explicit return type it should lint too /// ```edition2015 /// fn main() -> () { @@ -17,7 +17,7 @@ /// unimplemented!(); /// } /// ``` -/// +/// /// This should, too. /// ```rust /// fn main() { @@ -25,7 +25,7 @@ /// unimplemented!(); /// } /// ``` -/// +/// /// This one too. /// ```no_run /// // the fn is not always the first line diff --git a/tests/ui/needless_for_each_fixable.fixed b/tests/ui/needless_for_each_fixable.fixed index fa23e18318f..a73aff55639 100644 --- a/tests/ui/needless_for_each_fixable.fixed +++ b/tests/ui/needless_for_each_fixable.fixed @@ -128,3 +128,18 @@ fn should_not_lint() { } fn main() {} + +mod issue14734 { + fn let_desugar(rows: &[u8]) { + let mut v = vec![]; + for x in rows.iter() { _ = v.push(x) } + //~^ needless_for_each + } + + fn do_something(_: &u8, _: u8) {} + + fn single_expr(rows: &[u8]) { + for x in rows.iter() { do_something(x, 1u8); } + //~^ needless_for_each + } +} diff --git a/tests/ui/needless_for_each_fixable.rs b/tests/ui/needless_for_each_fixable.rs index 2c7e68a6f51..d92f055d3f4 100644 --- a/tests/ui/needless_for_each_fixable.rs +++ b/tests/ui/needless_for_each_fixable.rs @@ -128,3 +128,18 @@ fn should_not_lint() { } fn main() {} + +mod issue14734 { + fn let_desugar(rows: &[u8]) { + let mut v = vec![]; + rows.iter().for_each(|x| _ = v.push(x)); + //~^ needless_for_each + } + + fn do_something(_: &u8, _: u8) {} + + fn single_expr(rows: &[u8]) { + rows.iter().for_each(|x| do_something(x, 1u8)); + //~^ needless_for_each + } +} diff --git a/tests/ui/needless_for_each_fixable.stderr b/tests/ui/needless_for_each_fixable.stderr index 013a3fa3e36..f8014456097 100644 --- a/tests/ui/needless_for_each_fixable.stderr +++ b/tests/ui/needless_for_each_fixable.stderr @@ -136,5 +136,17 @@ LL + acc += elem; LL + } | -error: aborting due to 8 previous errors +error: needless use of `for_each` + --> tests/ui/needless_for_each_fixable.rs:135:9 + | +LL | rows.iter().for_each(|x| _ = v.push(x)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for x in rows.iter() { _ = v.push(x) }` + +error: needless use of `for_each` + --> tests/ui/needless_for_each_fixable.rs:142:9 + | +LL | rows.iter().for_each(|x| do_something(x, 1u8)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for x in rows.iter() { do_something(x, 1u8); }` + +error: aborting due to 10 previous errors diff --git a/tests/ui/needless_return.fixed b/tests/ui/needless_return.fixed index 17d3862cd86..d571b97f519 100644 --- a/tests/ui/needless_return.fixed +++ b/tests/ui/needless_return.fixed @@ -452,3 +452,68 @@ pub unsafe fn issue_12157() -> *const i32 { (unsafe { todo() } as *const i32) //~^ needless_return } + +mod else_ifs { + fn test1(a: i32) -> u32 { + if a == 0 { + 1 + //~^ needless_return + } else if a < 10 { + 2 + //~^ needless_return + } else { + 3 + //~^ needless_return + } + } + + fn test2(a: i32) -> u32 { + if a == 0 { + 1 + //~^ needless_return + } else if a < 10 { + 2 + } else { + 3 + //~^ needless_return + } + } + + fn test3(a: i32) -> u32 { + if a == 0 { + 1 + //~^ needless_return + } else if a < 10 { + 2 + } else { + 3 + //~^ needless_return + } + } + + #[allow(clippy::match_single_binding, clippy::redundant_pattern)] + fn test4(a: i32) -> u32 { + if a == 0 { + 1 + //~^ needless_return + } else if if if a > 0x1_1 { + return 2; + } else { + return 5; + } { + true + } else { + true + } { + 0xDEADC0DE + } else if match a { + b @ _ => { + return 1; + }, + } { + 0xDEADBEEF + } else { + 1 + } + } +} diff --git a/tests/ui/needless_return.rs b/tests/ui/needless_return.rs index 1c6e7ffa1ee..2e4348ea338 100644 --- a/tests/ui/needless_return.rs +++ b/tests/ui/needless_return.rs @@ -461,3 +461,68 @@ pub unsafe fn issue_12157() -> *const i32 { return unsafe { todo() } as *const i32; //~^ needless_return } + +mod else_ifs { + fn test1(a: i32) -> u32 { + if a == 0 { + return 1; + //~^ needless_return + } else if a < 10 { + return 2; + //~^ needless_return + } else { + return 3; + //~^ needless_return + } + } + + fn test2(a: i32) -> u32 { + if a == 0 { + return 1; + //~^ needless_return + } else if a < 10 { + 2 + } else { + return 3; + //~^ needless_return + } + } + + fn test3(a: i32) -> u32 { + if a == 0 { + return 1; + //~^ needless_return + } else if a < 10 { + 2 + } else { + return 3; + //~^ needless_return + } + } + + #[allow(clippy::match_single_binding, clippy::redundant_pattern)] + fn test4(a: i32) -> u32 { + if a == 0 { + return 1; + //~^ needless_return + } else if if if a > 0x1_1 { + return 2; + } else { + return 5; + } { + true + } else { + true + } { + 0xDEADC0DE + } else if match a { + b @ _ => { + return 1; + }, + } { + 0xDEADBEEF + } else { + 1 + } + } +} diff --git a/tests/ui/needless_return.stderr b/tests/ui/needless_return.stderr index 26dd265379b..206bd8ee5af 100644 --- a/tests/ui/needless_return.stderr +++ b/tests/ui/needless_return.stderr @@ -685,5 +685,101 @@ LL - return unsafe { todo() } as *const i32; LL + (unsafe { todo() } as *const i32) | -error: aborting due to 55 previous errors +error: unneeded `return` statement + --> tests/ui/needless_return.rs:468:13 + | +LL | return 1; + | ^^^^^^^^ + | +help: remove `return` + | +LL - return 1; +LL + 1 + | + +error: unneeded `return` statement + --> tests/ui/needless_return.rs:471:13 + | +LL | return 2; + | ^^^^^^^^ + | +help: remove `return` + | +LL - return 2; +LL + 2 + | + +error: unneeded `return` statement + --> tests/ui/needless_return.rs:474:13 + | +LL | return 3; + | ^^^^^^^^ + | +help: remove `return` + | +LL - return 3; +LL + 3 + | + +error: unneeded `return` statement + --> tests/ui/needless_return.rs:481:13 + | +LL | return 1; + | ^^^^^^^^ + | +help: remove `return` + | +LL - return 1; +LL + 1 + | + +error: unneeded `return` statement + --> tests/ui/needless_return.rs:486:13 + | +LL | return 3; + | ^^^^^^^^ + | +help: remove `return` + | +LL - return 3; +LL + 3 + | + +error: unneeded `return` statement + --> tests/ui/needless_return.rs:493:13 + | +LL | return 1; + | ^^^^^^^^ + | +help: remove `return` + | +LL - return 1; +LL + 1 + | + +error: unneeded `return` statement + --> tests/ui/needless_return.rs:498:13 + | +LL | return 3; + | ^^^^^^^^ + | +help: remove `return` + | +LL - return 3; +LL + 3 + | + +error: unneeded `return` statement + --> tests/ui/needless_return.rs:506:13 + | +LL | return 1; + | ^^^^^^^^ + | +help: remove `return` + | +LL - return 1; +LL + 1 + | + +error: aborting due to 63 previous errors diff --git a/tests/ui/skip_rustfmt/non_expressive_names_error_recovery.fixed b/tests/ui/non_expressive_names_error_recovery.fixed index c96a53ba2cd..c96a53ba2cd 100644 --- a/tests/ui/skip_rustfmt/non_expressive_names_error_recovery.fixed +++ b/tests/ui/non_expressive_names_error_recovery.fixed diff --git a/tests/ui/skip_rustfmt/non_expressive_names_error_recovery.rs b/tests/ui/non_expressive_names_error_recovery.rs index a3a35eb26d1..a3a35eb26d1 100644 --- a/tests/ui/skip_rustfmt/non_expressive_names_error_recovery.rs +++ b/tests/ui/non_expressive_names_error_recovery.rs diff --git a/tests/ui/skip_rustfmt/non_expressive_names_error_recovery.stderr b/tests/ui/non_expressive_names_error_recovery.stderr index 4998b9bd2cc..28d9a42a9a1 100644 --- a/tests/ui/skip_rustfmt/non_expressive_names_error_recovery.stderr +++ b/tests/ui/non_expressive_names_error_recovery.stderr @@ -1,5 +1,5 @@ error: expected one of `!`, `(`, `+`, `,`, `::`, `<`, or `>`, found `)` - --> tests/ui/skip_rustfmt/non_expressive_names_error_recovery.rs:6:19 + --> tests/ui/non_expressive_names_error_recovery.rs:6:19 | LL | fn aa(a: Aa<String) { | ^ expected one of 7 possible tokens diff --git a/tests/ui/question_mark.fixed b/tests/ui/question_mark.fixed index 507bc2b29d8..60dc1c101b6 100644 --- a/tests/ui/question_mark.fixed +++ b/tests/ui/question_mark.fixed @@ -443,3 +443,13 @@ fn issue_14615(a: MutexGuard<Option<u32>>) -> Option<String> { //~^^^ question_mark Some(format!("{a}")) } + +fn const_in_pattern(x: Option<(i32, i32)>) -> Option<()> { + const N: i32 = 0; + + let Some((x, N)) = x else { + return None; + }; + + None +} diff --git a/tests/ui/question_mark.rs b/tests/ui/question_mark.rs index 64b51b849ed..99d0122a98f 100644 --- a/tests/ui/question_mark.rs +++ b/tests/ui/question_mark.rs @@ -539,3 +539,13 @@ fn issue_14615(a: MutexGuard<Option<u32>>) -> Option<String> { //~^^^ question_mark Some(format!("{a}")) } + +fn const_in_pattern(x: Option<(i32, i32)>) -> Option<()> { + const N: i32 = 0; + + let Some((x, N)) = x else { + return None; + }; + + None +} diff --git a/tests/ui/to_string_in_format_args_incremental.fixed b/tests/ui/to_string_in_format_args_incremental.fixed new file mode 100644 index 00000000000..98b028c15fd --- /dev/null +++ b/tests/ui/to_string_in_format_args_incremental.fixed @@ -0,0 +1,11 @@ +//@compile-flags: -C incremental=target/debug/test/incr + +#![allow(clippy::uninlined_format_args)] + +// see https://github.com/rust-lang/rust-clippy/issues/10969 + +fn main() { + let s = "Hello, world!"; + println!("{}", s); + //~^ to_string_in_format_args +} diff --git a/tests/ui/to_string_in_format_args_incremental.rs b/tests/ui/to_string_in_format_args_incremental.rs new file mode 100644 index 00000000000..a5ebe4b0327 --- /dev/null +++ b/tests/ui/to_string_in_format_args_incremental.rs @@ -0,0 +1,11 @@ +//@compile-flags: -C incremental=target/debug/test/incr + +#![allow(clippy::uninlined_format_args)] + +// see https://github.com/rust-lang/rust-clippy/issues/10969 + +fn main() { + let s = "Hello, world!"; + println!("{}", s.to_string()); + //~^ to_string_in_format_args +} diff --git a/tests/ui/to_string_in_format_args_incremental.stderr b/tests/ui/to_string_in_format_args_incremental.stderr new file mode 100644 index 00000000000..62178cc0cfb --- /dev/null +++ b/tests/ui/to_string_in_format_args_incremental.stderr @@ -0,0 +1,11 @@ +error: `to_string` applied to a type that implements `Display` in `println!` args + --> tests/ui/to_string_in_format_args_incremental.rs:9:21 + | +LL | println!("{}", s.to_string()); + | ^^^^^^^^^^^^ help: remove this + | + = note: `-D clippy::to-string-in-format-args` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::to_string_in_format_args)]` + +error: aborting due to 1 previous error + diff --git a/tests/ui/trivially_copy_pass_by_ref.fixed b/tests/ui/trivially_copy_pass_by_ref.fixed new file mode 100644 index 00000000000..af7d82130f0 --- /dev/null +++ b/tests/ui/trivially_copy_pass_by_ref.fixed @@ -0,0 +1,179 @@ +//@normalize-stderr-test: "\(\d+ byte\)" -> "(N byte)" +//@normalize-stderr-test: "\(limit: \d+ byte\)" -> "(limit: N byte)" +#![deny(clippy::trivially_copy_pass_by_ref)] +#![allow( + clippy::disallowed_names, + clippy::extra_unused_lifetimes, + clippy::needless_lifetimes, + clippy::needless_pass_by_ref_mut, + clippy::redundant_field_names, + clippy::uninlined_format_args +)] + +#[derive(Copy, Clone)] +struct Foo(u32); + +#[derive(Copy, Clone)] +struct Bar([u8; 24]); + +#[derive(Copy, Clone)] +pub struct Color { + pub r: u8, + pub g: u8, + pub b: u8, + pub a: u8, +} + +struct FooRef<'a> { + foo: &'a Foo, +} + +type Baz = u32; + +fn good(a: &mut u32, b: u32, c: &Bar) {} + +fn good_return_implicit_lt_ref(foo: &Foo) -> &u32 { + &foo.0 +} + +#[allow(clippy::needless_lifetimes)] +fn good_return_explicit_lt_ref<'a>(foo: &'a Foo) -> &'a u32 { + &foo.0 +} + +fn good_return_implicit_lt_struct(foo: &Foo) -> FooRef { + FooRef { foo } +} + +#[allow(clippy::needless_lifetimes)] +fn good_return_explicit_lt_struct<'a>(foo: &'a Foo) -> FooRef<'a> { + FooRef { foo } +} + +fn bad(x: u32, y: Foo, z: Baz) {} +//~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by +//~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by +//~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + +impl Foo { + fn good(self, a: &mut u32, b: u32, c: &Bar) {} + + fn good2(&mut self) {} + + fn bad(self, x: u32, y: Foo, z: Baz) {} + //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + //~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + //~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + //~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + + fn bad2(x: u32, y: Foo, z: Baz) {} + //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + //~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + //~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + + fn bad_issue7518(self, other: Self) {} + //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if +} + +impl AsRef<u32> for Foo { + fn as_ref(&self) -> &u32 { + &self.0 + } +} + +impl Bar { + fn good(&self, a: &mut u32, b: u32, c: &Bar) {} + + fn bad2(x: u32, y: Foo, z: Baz) {} + //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if + //~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if + //~| ERROR: this argument (4 byte) is passed by reference, but would be more efficient if +} + +trait MyTrait { + fn trait_method(&self, foo: Foo); + //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if +} + +pub trait MyTrait2 { + fn trait_method2(&self, color: &Color); +} + +trait MyTrait3 { + #[expect(clippy::trivially_copy_pass_by_ref)] + fn trait_method(&self, foo: &Foo); +} + +// Trait impls should not warn +impl MyTrait3 for Foo { + fn trait_method(&self, foo: &Foo) { + unimplemented!() + } +} + +mod issue3992 { + pub trait A { + #[allow(clippy::trivially_copy_pass_by_ref)] + fn a(b: &u16) {} + } + + #[allow(clippy::trivially_copy_pass_by_ref)] + pub fn c(d: &u16) {} +} + +mod issue5876 { + // Don't lint here as it is always inlined + #[inline(always)] + fn foo_always(x: &i32) { + println!("{}", x); + } + + #[inline(never)] + fn foo_never(x: i32) { + //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + println!("{}", x); + } + + #[inline] + fn foo(x: i32) { + //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + println!("{}", x); + } +} + +fn ref_to_opt_ref_implicit(x: &u32) -> Option<&u32> { + Some(x) +} + +fn ref_to_opt_ref_explicit<'a>(x: &'a u32) -> Option<&'a u32> { + Some(x) +} + +fn with_constraint<'a, 'b: 'a>(x: &'b u32, y: &'a u32) -> &'a u32 { + if true { x } else { y } +} + +async fn async_implicit(x: &u32) -> &u32 { + x +} + +async fn async_explicit<'a>(x: &'a u32) -> &'a u32 { + x +} + +fn unrelated_lifetimes<'a, 'b>(_x: u32, y: &'b u32) -> &'b u32 { + //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by + y +} + +fn return_ptr(x: &u32) -> *const u32 { + x +} + +fn return_field_ptr(x: &(u32, u32)) -> *const u32 { + &x.0 +} + +fn return_field_ptr_addr_of(x: &(u32, u32)) -> *const u32 { + core::ptr::addr_of!(x.0) +} diff --git a/tests/ui/trivially_copy_pass_by_ref.rs b/tests/ui/trivially_copy_pass_by_ref.rs index 37bc6f89a20..00e11a1ea28 100644 --- a/tests/ui/trivially_copy_pass_by_ref.rs +++ b/tests/ui/trivially_copy_pass_by_ref.rs @@ -1,14 +1,15 @@ //@normalize-stderr-test: "\(\d+ byte\)" -> "(N byte)" -//@normalize-stderr-test: "\(limit: \d+ byte\)" -> "(limit: 8 byte)" +//@normalize-stderr-test: "\(limit: \d+ byte\)" -> "(limit: N byte)" #![deny(clippy::trivially_copy_pass_by_ref)] #![allow( clippy::disallowed_names, + clippy::extra_unused_lifetimes, clippy::needless_lifetimes, + clippy::needless_pass_by_ref_mut, clippy::redundant_field_names, - clippy::uninlined_format_args, - clippy::needless_pass_by_ref_mut + clippy::uninlined_format_args )] -//@no-rustfix + #[derive(Copy, Clone)] struct Foo(u32); @@ -90,21 +91,26 @@ impl Bar { } trait MyTrait { - fn trait_method(&self, _foo: &Foo); + fn trait_method(&self, foo: &Foo); //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if } pub trait MyTrait2 { - fn trait_method2(&self, _color: &Color); + fn trait_method2(&self, color: &Color); +} + +trait MyTrait3 { + #[expect(clippy::trivially_copy_pass_by_ref)] + fn trait_method(&self, foo: &Foo); } -impl MyTrait for Foo { - fn trait_method(&self, _foo: &Foo) { +// Trait impls should not warn +impl MyTrait3 for Foo { + fn trait_method(&self, foo: &Foo) { unimplemented!() } } -#[allow(unused_variables)] mod issue3992 { pub trait A { #[allow(clippy::trivially_copy_pass_by_ref)] @@ -135,57 +141,39 @@ mod issue5876 { } } -fn _ref_to_opt_ref_implicit(x: &u32) -> Option<&u32> { +fn ref_to_opt_ref_implicit(x: &u32) -> Option<&u32> { Some(x) } -#[allow(clippy::needless_lifetimes)] -fn _ref_to_opt_ref_explicit<'a>(x: &'a u32) -> Option<&'a u32> { +fn ref_to_opt_ref_explicit<'a>(x: &'a u32) -> Option<&'a u32> { Some(x) } -fn _with_constraint<'a, 'b: 'a>(x: &'b u32, y: &'a u32) -> &'a u32 { +fn with_constraint<'a, 'b: 'a>(x: &'b u32, y: &'a u32) -> &'a u32 { if true { x } else { y } } -async fn _async_implicit(x: &u32) -> &u32 { +async fn async_implicit(x: &u32) -> &u32 { x } -#[allow(clippy::needless_lifetimes)] -async fn _async_explicit<'a>(x: &'a u32) -> &'a u32 { +async fn async_explicit<'a>(x: &'a u32) -> &'a u32 { x } -fn _unrelated_lifetimes<'a, 'b>(_x: &'a u32, y: &'b u32) -> &'b u32 { +fn unrelated_lifetimes<'a, 'b>(_x: &'a u32, y: &'b u32) -> &'b u32 { //~^ ERROR: this argument (4 byte) is passed by reference, but would be more efficient if passed by y } -fn _return_ptr(x: &u32) -> *const u32 { +fn return_ptr(x: &u32) -> *const u32 { x } -fn _return_field_ptr(x: &(u32, u32)) -> *const u32 { +fn return_field_ptr(x: &(u32, u32)) -> *const u32 { &x.0 } -fn _return_field_ptr_addr_of(x: &(u32, u32)) -> *const u32 { +fn return_field_ptr_addr_of(x: &(u32, u32)) -> *const u32 { core::ptr::addr_of!(x.0) } - -fn main() { - let (mut foo, bar) = (Foo(0), Bar([0; 24])); - let (mut a, b, c, x, y, z) = (0, 0, Bar([0; 24]), 0, Foo(0), 0); - good(&mut a, b, &c); - good_return_implicit_lt_ref(&y); - good_return_explicit_lt_ref(&y); - bad(&x, &y, &z); - foo.good(&mut a, b, &c); - foo.good2(); - foo.bad(&x, &y, &z); - Foo::bad2(&x, &y, &z); - bar.good(&mut a, b, &c); - Bar::bad2(&x, &y, &z); - foo.as_ref(); -} diff --git a/tests/ui/trivially_copy_pass_by_ref.stderr b/tests/ui/trivially_copy_pass_by_ref.stderr index e813fecf653..f101ac5ccd6 100644 --- a/tests/ui/trivially_copy_pass_by_ref.stderr +++ b/tests/ui/trivially_copy_pass_by_ref.stderr @@ -1,5 +1,5 @@ -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:52:11 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:53:11 | LL | fn bad(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `u32` @@ -10,107 +10,107 @@ note: the lint level is defined here LL | #![deny(clippy::trivially_copy_pass_by_ref)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:52:20 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:53:20 | LL | fn bad(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `Foo` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:52:29 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:53:29 | LL | fn bad(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `Baz` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:62:12 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:63:12 | LL | fn bad(&self, x: &u32, y: &Foo, z: &Baz) {} | ^^^^^ help: consider passing by value instead: `self` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:62:22 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:63:22 | LL | fn bad(&self, x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `u32` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:62:31 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:63:31 | LL | fn bad(&self, x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `Foo` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:62:40 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:63:40 | LL | fn bad(&self, x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `Baz` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:68:16 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:69:16 | LL | fn bad2(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `u32` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:68:25 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:69:25 | LL | fn bad2(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `Foo` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:68:34 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:69:34 | LL | fn bad2(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `Baz` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:73:35 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:74:35 | LL | fn bad_issue7518(self, other: &Self) {} | ^^^^^ help: consider passing by value instead: `Self` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:86:16 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:87:16 | LL | fn bad2(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `u32` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:86:25 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:87:25 | LL | fn bad2(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `Foo` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:86:34 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:87:34 | LL | fn bad2(x: &u32, y: &Foo, z: &Baz) {} | ^^^^ help: consider passing by value instead: `Baz` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:93:34 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:94:33 | -LL | fn trait_method(&self, _foo: &Foo); - | ^^^^ help: consider passing by value instead: `Foo` +LL | fn trait_method(&self, foo: &Foo); + | ^^^^ help: consider passing by value instead: `Foo` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:126:21 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:132:21 | LL | fn foo_never(x: &i32) { | ^^^^ help: consider passing by value instead: `i32` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:132:15 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:138:15 | LL | fn foo(x: &i32) { | ^^^^ help: consider passing by value instead: `i32` -error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte) - --> tests/ui/trivially_copy_pass_by_ref.rs:160:37 +error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) + --> tests/ui/trivially_copy_pass_by_ref.rs:164:36 | -LL | fn _unrelated_lifetimes<'a, 'b>(_x: &'a u32, y: &'b u32) -> &'b u32 { - | ^^^^^^^ help: consider passing by value instead: `u32` +LL | fn unrelated_lifetimes<'a, 'b>(_x: &'a u32, y: &'b u32) -> &'b u32 { + | ^^^^^^^ help: consider passing by value instead: `u32` error: aborting due to 18 previous errors diff --git a/tests/ui/while_let_loop.rs b/tests/ui/while_let_loop.rs index d591ab984cf..95062c9f46c 100644 --- a/tests/ui/while_let_loop.rs +++ b/tests/ui/while_let_loop.rs @@ -154,3 +154,89 @@ fn issue_5715(mut m: core::cell::RefCell<Option<u32>>) { m = core::cell::RefCell::new(Some(x + 1)); } } + +mod issue_362 { + pub fn merge_sorted<T>(xs: Vec<T>, ys: Vec<T>) -> Vec<T> + where + T: PartialOrd, + { + let total_len = xs.len() + ys.len(); + let mut res = Vec::with_capacity(total_len); + let mut ix = xs.into_iter().peekable(); + let mut iy = ys.into_iter().peekable(); + loop { + //~^ while_let_loop + let lt = match (ix.peek(), iy.peek()) { + (Some(x), Some(y)) => x < y, + _ => break, + }; + res.push(if lt { &mut ix } else { &mut iy }.next().unwrap()); + } + res.extend(ix); + res.extend(iy); + res + } +} + +fn let_assign() { + loop { + //~^ while_let_loop + let x = if let Some(y) = Some(3) { + y + } else { + break; + }; + if x == 3 { + break; + } + } + + loop { + //~^ while_let_loop + let x: u32 = if let Some(y) = Some(3) { + y + } else { + break; + }; + if x == 3 { + break; + } + } + + loop { + //~^ while_let_loop + let x = if let Some(x) = Some(3) { + x + } else { + break; + }; + if x == 3 { + break; + } + } + + loop { + //~^ while_let_loop + let x: u32 = if let Some(x) = Some(3) { + x + } else { + break; + }; + if x == 3 { + break; + } + } + + loop { + //~^ while_let_loop + let x = if let Some(x) = Some(2) { + let t = 1; + t + x + } else { + break; + }; + if x == 3 { + break; + } + } +} diff --git a/tests/ui/while_let_loop.stderr b/tests/ui/while_let_loop.stderr index bd482857e67..ed42628a53e 100644 --- a/tests/ui/while_let_loop.stderr +++ b/tests/ui/while_let_loop.stderr @@ -57,7 +57,125 @@ LL | | let (e, l) = match "".split_whitespace().next() { ... | LL | | let _ = (e, l); LL | | } - | |_____^ help: try: `while let Some(word) = "".split_whitespace().next() { .. }` + | |_____^ + | +help: try + | +LL ~ while let Some(word) = "".split_whitespace().next() { +LL + let (e, l) = (word.is_empty(), word.len()); +LL + .. +LL + } + | + +error: this loop could be written as a `while let` loop + --> tests/ui/while_let_loop.rs:167:9 + | +LL | / loop { +LL | | +LL | | let lt = match (ix.peek(), iy.peek()) { +LL | | (Some(x), Some(y)) => x < y, +... | +LL | | res.push(if lt { &mut ix } else { &mut iy }.next().unwrap()); +LL | | } + | |_________^ + | +help: try + | +LL ~ while let (Some(x), Some(y)) = (ix.peek(), iy.peek()) { +LL + let lt = x < y; +LL + .. +LL + } + | + +error: this loop could be written as a `while let` loop + --> tests/ui/while_let_loop.rs:182:5 + | +LL | / loop { +LL | | +LL | | let x = if let Some(y) = Some(3) { +LL | | y +... | +LL | | } + | |_____^ + | +help: try + | +LL ~ while let Some(y) = Some(3) { +LL + let x = y; +LL + .. +LL + } + | + +error: this loop could be written as a `while let` loop + --> tests/ui/while_let_loop.rs:194:5 + | +LL | / loop { +LL | | +LL | | let x: u32 = if let Some(y) = Some(3) { +LL | | y +... | +LL | | } + | |_____^ + | +help: try + | +LL ~ while let Some(y) = Some(3) { +LL + let x: u32 = y; +LL + .. +LL + } + | + +error: this loop could be written as a `while let` loop + --> tests/ui/while_let_loop.rs:206:5 + | +LL | / loop { +LL | | +LL | | let x = if let Some(x) = Some(3) { +LL | | x +... | +LL | | } + | |_____^ help: try: `while let Some(x) = Some(3) { .. }` + +error: this loop could be written as a `while let` loop + --> tests/ui/while_let_loop.rs:218:5 + | +LL | / loop { +LL | | +LL | | let x: u32 = if let Some(x) = Some(3) { +LL | | x +... | +LL | | } + | |_____^ + | +help: try + | +LL ~ while let Some(x) = Some(3) { +LL + let x: u32 = x; +LL + .. +LL + } + | + +error: this loop could be written as a `while let` loop + --> tests/ui/while_let_loop.rs:230:5 + | +LL | / loop { +LL | | +LL | | let x = if let Some(x) = Some(2) { +LL | | let t = 1; +... | +LL | | } + | |_____^ + | +help: try + | +LL ~ while let Some(x) = Some(2) { +LL + let x = { +LL + let t = 1; +LL + t + x +LL + }; +LL + .. +LL + } + | -error: aborting due to 5 previous errors +error: aborting due to 11 previous errors |