3cf8c0b3b5
This checks if the value is a non-negative constant before linting about losing the sign. Because the `constant` function doesn't handle const functions, we check if the value is from a call to a `max_value` function directly. A utility method called `get_def_path` was added to make checking for the function paths easier. Fixes #2728
59 lines
1.3 KiB
Rust
59 lines
1.3 KiB
Rust
#[warn(
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clippy::cast_precision_loss,
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clippy::cast_possible_truncation,
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clippy::cast_sign_loss,
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clippy::cast_possible_wrap,
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clippy::cast_lossless
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)]
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#[allow(clippy::no_effect, clippy::unnecessary_operation)]
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fn main() {
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// Test clippy::cast_precision_loss
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1i32 as f32;
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1i64 as f32;
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1i64 as f64;
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1u32 as f32;
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1u64 as f32;
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1u64 as f64;
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// Test clippy::cast_possible_truncation
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1f32 as i32;
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1f32 as u32;
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1f64 as f32;
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1i32 as i8;
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1i32 as u8;
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1f64 as isize;
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1f64 as usize;
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// Test clippy::cast_possible_wrap
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1u8 as i8;
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1u16 as i16;
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1u32 as i32;
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1u64 as i64;
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1usize as isize;
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// Test clippy::cast_lossless with casts from floating-point types
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1.0f32 as f64;
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// Test clippy::cast_lossless with an expression wrapped in parens
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(1u8 + 1u8) as u16;
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// Test clippy::cast_sign_loss
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1i32 as u32;
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-1i32 as u32;
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1isize as usize;
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-1isize as usize;
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0i8 as u8;
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i8::max_value() as u8;
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i16::max_value() as u16;
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i32::max_value() as u32;
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i64::max_value() as u64;
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i128::max_value() as u128;
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// Extra checks for *size
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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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// 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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1.0 as f64;
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1 as u64;
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}
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