92 lines
1.7 KiB
Rust
92 lines
1.7 KiB
Rust
// run-rustfix
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#![warn(clippy::unnecessary_cast)]
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#![allow(
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unused_must_use,
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clippy::borrow_as_ptr,
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clippy::no_effect,
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clippy::nonstandard_macro_braces,
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clippy::unnecessary_operation
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)]
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#[rustfmt::skip]
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fn main() {
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// Test cast_unnecessary
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1i32 as i32;
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1f32 as f32;
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false as bool;
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&1i32 as &i32;
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-1_i32 as i32;
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- 1_i32 as i32;
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-1f32 as f32;
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1_i32 as i32;
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1_f32 as f32;
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// macro version
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macro_rules! foo {
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($a:ident, $b:ident) => {
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#[allow(unused)]
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pub fn $a() -> $b {
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1 as $b
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}
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};
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}
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foo!(a, i32);
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foo!(b, f32);
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foo!(c, f64);
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// do not lint cast to cfg-dependant type
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1 as std::os::raw::c_char;
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// do not lint cast to alias type
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1 as I32Alias;
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&1 as &I32Alias;
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}
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type I32Alias = i32;
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mod fixable {
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#![allow(dead_code)]
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fn main() {
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// casting integer literal to float is unnecessary
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100 as f32;
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100 as f64;
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100_i32 as f64;
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let _ = -100 as f32;
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let _ = -100 as f64;
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let _ = -100_i32 as f64;
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100. as f32;
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100. as f64;
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// Should not trigger
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#[rustfmt::skip]
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let v = vec!(1);
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&v as &[i32];
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0x10 as f32;
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0o10 as f32;
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0b10 as f32;
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0x11 as f64;
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0o11 as f64;
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0b11 as f64;
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1 as u32;
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0x10 as i32;
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0b10 as usize;
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0o73 as u16;
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1_000_000_000 as u32;
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1.0 as f64;
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0.5 as f32;
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1.0 as u16;
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let _ = -1 as i32;
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let _ = -1.0 as f32;
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let _ = 1 as I32Alias;
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let _ = &1 as &I32Alias;
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}
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type I32Alias = i32;
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}
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