mirror of
https://github.com/rust-lang/rust-clippy
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31 lines
1.4 KiB
Rust
31 lines
1.4 KiB
Rust
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#![feature(plugin)]
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#![plugin(clippy)]
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#[deny(cast_precision_loss, cast_possible_overflow, cast_sign_loss)]
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fn main() {
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let i : i32 = 42;
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let u : u32 = 42;
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let f : f32 = 42.0;
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// Test cast_precision_loss
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i as f32; //~ERROR converting from i32 to f32, which causes a loss of precision
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(i as i64) as f32; //~ERROR converting from i64 to f32, which causes a loss of precision
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(i as i64) as f64; //~ERROR converting from i64 to f64, which causes a loss of precision
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u as f32; //~ERROR converting from u32 to f32, which causes a loss of precision
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(u as u64) as f32; //~ERROR converting from u64 to f32, which causes a loss of precision
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(u as u64) as f64; //~ERROR converting from u64 to f64, which causes a loss of precision
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i as f64; // Should not trigger the lint
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u as f64; // Should not trigger the lint
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// Test cast_possible_overflow
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f as i32; //~ERROR the contents of a f32 may overflow a i32
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f as u32; //~ERROR the contents of a f32 may overflow a u32
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//~^ERROR casting from f32 to u32 loses the sign of the value
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i as u8; //~ERROR the contents of a i32 may overflow a u8
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//~^ERROR casting from i32 to u8 loses the sign of the value
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(f as f64) as f32; //~ERROR the contents of a f64 may overflow a f32
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i as i8; //~ERROR the contents of a i32 may overflow a i8
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// Test cast_sign_loss
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i as u32; //~ERROR casting from i32 to u32 loses the sign of the value
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}
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