diff options
Diffstat (limited to '')
| -rw-r--r-- | tests/ui/lint/unused/issue-103320-must-use-ops.rs | 27 | ||||
| -rw-r--r-- | tests/ui/lint/unused/issue-103320-must-use-ops.stderr | 67 | ||||
| -rw-r--r-- | tests/ui/lint/unused/issue-96606.rs | 8 | ||||
| -rw-r--r-- | tests/ui/lint/unused/issue-96606.stderr | 33 | ||||
| -rw-r--r-- | tests/ui/lint/unused_parens_multibyte_recovery.rs | 1 | ||||
| -rw-r--r-- | tests/ui/lint/unused_parens_multibyte_recovery.stderr | 35 |
6 files changed, 137 insertions, 34 deletions
diff --git a/tests/ui/lint/unused/issue-103320-must-use-ops.rs b/tests/ui/lint/unused/issue-103320-must-use-ops.rs new file mode 100644 index 000000000..597d312fa --- /dev/null +++ b/tests/ui/lint/unused/issue-103320-must-use-ops.rs @@ -0,0 +1,27 @@ +// check-pass + +#![warn(unused_must_use)] +#![feature(never_type)] + +use std::ops::Add; +use std::ops::Sub; +use std::ops::Mul; +use std::ops::Div; +use std::ops::Rem; + +fn main() { + let x = 2_u32; + (x.add(4), x.sub(4), x.mul(4), x.div(4), x.rem(4)); + + x.add(4); //~ WARN unused return value of `add` that must be used + + x.sub(4); //~ WARN unused return value of `sub` that must be used + + x.mul(4); //~ WARN unused return value of `mul` that must be used + + x.div(4); //~ WARN unused return value of `div` that must be used + + x.rem(4); //~ WARN unused return value of `rem` that must be used + + println!("{}", x); +} diff --git a/tests/ui/lint/unused/issue-103320-must-use-ops.stderr b/tests/ui/lint/unused/issue-103320-must-use-ops.stderr new file mode 100644 index 000000000..57439ec6a --- /dev/null +++ b/tests/ui/lint/unused/issue-103320-must-use-ops.stderr @@ -0,0 +1,67 @@ +warning: unused return value of `add` that must be used + --> $DIR/issue-103320-must-use-ops.rs:16:5 + | +LL | x.add(4); + | ^^^^^^^^ + | + = note: this returns the result of the operation, without modifying the original +note: the lint level is defined here + --> $DIR/issue-103320-must-use-ops.rs:3:9 + | +LL | #![warn(unused_must_use)] + | ^^^^^^^^^^^^^^^ +help: use `let _ = ...` to ignore the resulting value + | +LL | let _ = x.add(4); + | +++++++ + +warning: unused return value of `sub` that must be used + --> $DIR/issue-103320-must-use-ops.rs:18:5 + | +LL | x.sub(4); + | ^^^^^^^^ + | + = note: this returns the result of the operation, without modifying the original +help: use `let _ = ...` to ignore the resulting value + | +LL | let _ = x.sub(4); + | +++++++ + +warning: unused return value of `mul` that must be used + --> $DIR/issue-103320-must-use-ops.rs:20:5 + | +LL | x.mul(4); + | ^^^^^^^^ + | + = note: this returns the result of the operation, without modifying the original +help: use `let _ = ...` to ignore the resulting value + | +LL | let _ = x.mul(4); + | +++++++ + +warning: unused return value of `div` that must be used + --> $DIR/issue-103320-must-use-ops.rs:22:5 + | +LL | x.div(4); + | ^^^^^^^^ + | + = note: this returns the result of the operation, without modifying the original +help: use `let _ = ...` to ignore the resulting value + | +LL | let _ = x.div(4); + | +++++++ + +warning: unused return value of `rem` that must be used + --> $DIR/issue-103320-must-use-ops.rs:24:5 + | +LL | x.rem(4); + | ^^^^^^^^ + | + = note: this returns the result of the operation, without modifying the original +help: use `let _ = ...` to ignore the resulting value + | +LL | let _ = x.rem(4); + | +++++++ + +warning: 5 warnings emitted + diff --git a/tests/ui/lint/unused/issue-96606.rs b/tests/ui/lint/unused/issue-96606.rs new file mode 100644 index 000000000..4e7c290fa --- /dev/null +++ b/tests/ui/lint/unused/issue-96606.rs @@ -0,0 +1,8 @@ +#[deny(unused)] +fn main() { + let arr = [0; 10]; + let _ = arr[(0)]; //~ ERROR unnecessary parentheses around index expression + let _ = arr[{0}]; //~ ERROR unnecessary braces around index expression + let _ = arr[1 + (0)]; + let _ = arr[{ let x = 0; x }]; +} diff --git a/tests/ui/lint/unused/issue-96606.stderr b/tests/ui/lint/unused/issue-96606.stderr new file mode 100644 index 000000000..e36277181 --- /dev/null +++ b/tests/ui/lint/unused/issue-96606.stderr @@ -0,0 +1,33 @@ +error: unnecessary parentheses around index expression + --> $DIR/issue-96606.rs:4:17 + | +LL | let _ = arr[(0)]; + | ^ ^ + | +note: the lint level is defined here + --> $DIR/issue-96606.rs:1:8 + | +LL | #[deny(unused)] + | ^^^^^^ + = note: `#[deny(unused_parens)]` implied by `#[deny(unused)]` +help: remove these parentheses + | +LL - let _ = arr[(0)]; +LL + let _ = arr[0]; + | + +error: unnecessary braces around index expression + --> $DIR/issue-96606.rs:5:17 + | +LL | let _ = arr[{0}]; + | ^ ^ + | + = note: `#[deny(unused_braces)]` implied by `#[deny(unused)]` +help: remove these braces + | +LL - let _ = arr[{0}]; +LL + let _ = arr[0]; + | + +error: aborting due to 2 previous errors + diff --git a/tests/ui/lint/unused_parens_multibyte_recovery.rs b/tests/ui/lint/unused_parens_multibyte_recovery.rs index 8fcfae22a..bc03faf3f 100644 --- a/tests/ui/lint/unused_parens_multibyte_recovery.rs +++ b/tests/ui/lint/unused_parens_multibyte_recovery.rs @@ -3,7 +3,6 @@ // error-pattern: this file contains an unclosed delimiter // error-pattern: this file contains an unclosed delimiter // error-pattern: this file contains an unclosed delimiter -// error-pattern: format argument must be a string literal // // Verify that unused parens lint does not try to create a span // which points in the middle of a multibyte character. diff --git a/tests/ui/lint/unused_parens_multibyte_recovery.stderr b/tests/ui/lint/unused_parens_multibyte_recovery.stderr index a0302b17e..adbf27fcc 100644 --- a/tests/ui/lint/unused_parens_multibyte_recovery.stderr +++ b/tests/ui/lint/unused_parens_multibyte_recovery.stderr @@ -1,5 +1,5 @@ error: this file contains an unclosed delimiter - --> $DIR/unused_parens_multibyte_recovery.rs:11:17 + --> $DIR/unused_parens_multibyte_recovery.rs:10:17 | LL | fn f(){(print!(á | -- - ^ @@ -8,36 +8,5 @@ LL | fn f(){(print!(á | |unclosed delimiter | unclosed delimiter -error: this file contains an unclosed delimiter - --> $DIR/unused_parens_multibyte_recovery.rs:11:17 - | -LL | fn f(){(print!(á - | -- - ^ - | || | - | || unclosed delimiter - | |unclosed delimiter - | unclosed delimiter - -error: this file contains an unclosed delimiter - --> $DIR/unused_parens_multibyte_recovery.rs:11:17 - | -LL | fn f(){(print!(á - | -- - ^ - | || | - | || unclosed delimiter - | |unclosed delimiter - | unclosed delimiter - -error: format argument must be a string literal - --> $DIR/unused_parens_multibyte_recovery.rs:11:16 - | -LL | fn f(){(print!(á - | ^ - | -help: you might be missing a string literal to format with - | -LL | fn f(){(print!("{}", á - | +++++ - -error: aborting due to 4 previous errors +error: aborting due to previous error |