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cast_possible_truncation: issue proper help message
This commit is contained in:
Samuel Tardieu
parent
0f7558148c
commit
d9dc1679f5
@ -168,7 +168,7 @@ pub(super) fn check(
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let suggestion = format!("{cast_to_snip}::try_from({name_of_cast_from})");
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span_lint_and_then(cx, CAST_POSSIBLE_TRUNCATION, expr.span, &msg, |diag| {
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diag.help("if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...");
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diag.help("if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...");
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diag.span_suggestion_with_style(
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expr.span,
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"... or use `try_from` and handle the error accordingly",
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@ -42,7 +42,7 @@ error: casting `f32` to `i32` may truncate the value
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LL | 1f32 as i32;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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= note: `-D clippy::cast-possible-truncation` implied by `-D warnings`
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help: ... or use `try_from` and handle the error accordingly
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@ -55,7 +55,7 @@ error: casting `f32` to `u32` may truncate the value
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LL | 1f32 as u32;
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| ^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u32::try_from(1f32);
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@ -75,7 +75,7 @@ error: casting `f64` to `f32` may truncate the value
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LL | 1f64 as f32;
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| ^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | f32::try_from(1f64);
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@ -87,7 +87,7 @@ error: casting `i32` to `i8` may truncate the value
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LL | 1i32 as i8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i8::try_from(1i32);
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@ -99,7 +99,7 @@ error: casting `i32` to `u8` may truncate the value
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LL | 1i32 as u8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u8::try_from(1i32);
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@ -111,7 +111,7 @@ error: casting `f64` to `isize` may truncate the value
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LL | 1f64 as isize;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | isize::try_from(1f64);
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@ -123,7 +123,7 @@ error: casting `f64` to `usize` may truncate the value
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LL | 1f64 as usize;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | usize::try_from(1f64);
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@ -141,7 +141,7 @@ error: casting `u32` to `u16` may truncate the value
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LL | 1f32 as u32 as u16;
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| ^^^^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u16::try_from(1f32 as u32);
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@ -153,7 +153,7 @@ error: casting `f32` to `u32` may truncate the value
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LL | 1f32 as u32 as u16;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u32::try_from(1f32) as u16;
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@ -215,7 +215,7 @@ error: casting `i64` to `i8` may truncate the value
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LL | (-99999999999i64).min(1) as i8; // should be linted because signed
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i8::try_from((-99999999999i64).min(1)); // should be linted because signed
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@ -227,7 +227,7 @@ error: casting `u64` to `u8` may truncate the value
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LL | 999999u64.clamp(0, 256) as u8; // should still be linted
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u8::try_from(999999u64.clamp(0, 256)); // should still be linted
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@ -239,7 +239,7 @@ error: casting `main::E2` to `u8` may truncate the value
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LL | let _ = self as u8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = u8::try_from(self);
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@ -259,7 +259,7 @@ error: casting `main::E5` to `i8` may truncate the value
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LL | let _ = self as i8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = i8::try_from(self);
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@ -277,7 +277,7 @@ error: casting `main::E6` to `i16` may truncate the value
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LL | let _ = self as i16;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = i16::try_from(self);
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@ -289,7 +289,7 @@ error: casting `main::E7` to `usize` may truncate the value on targets with 32-b
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LL | let _ = self as usize;
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| ^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = usize::try_from(self);
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@ -301,7 +301,7 @@ error: casting `main::E10` to `u16` may truncate the value
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LL | let _ = self as u16;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = u16::try_from(self);
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@ -313,7 +313,7 @@ error: casting `u32` to `u8` may truncate the value
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LL | let c = (q >> 16) as u8;
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| ^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let c = u8::try_from((q >> 16));
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@ -325,7 +325,7 @@ error: casting `u32` to `u8` may truncate the value
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LL | let c = (q / 1000) as u8;
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| ^^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let c = u8::try_from((q / 1000));
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@ -4,7 +4,7 @@ error: casting `isize` to `i8` may truncate the value
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LL | 1isize as i8;
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| ^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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= note: `-D clippy::cast-possible-truncation` implied by `-D warnings`
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help: ... or use `try_from` and handle the error accordingly
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@ -43,7 +43,7 @@ error: casting `isize` to `i32` may truncate the value on targets with 64-bit wi
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LL | 1isize as i32;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i32::try_from(1isize);
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@ -55,7 +55,7 @@ error: casting `isize` to `u32` may truncate the value on targets with 64-bit wi
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LL | 1isize as u32;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u32::try_from(1isize);
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@ -67,7 +67,7 @@ error: casting `usize` to `u32` may truncate the value on targets with 64-bit wi
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LL | 1usize as u32;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u32::try_from(1usize);
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@ -79,7 +79,7 @@ error: casting `usize` to `i32` may truncate the value on targets with 64-bit wi
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LL | 1usize as i32;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i32::try_from(1usize);
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@ -99,7 +99,7 @@ error: casting `i64` to `isize` may truncate the value on targets with 32-bit wi
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LL | 1i64 as isize;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | isize::try_from(1i64);
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@ -111,7 +111,7 @@ error: casting `i64` to `usize` may truncate the value on targets with 32-bit wi
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LL | 1i64 as usize;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | usize::try_from(1i64);
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@ -123,7 +123,7 @@ error: casting `u64` to `isize` may truncate the value on targets with 32-bit wi
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LL | 1u64 as isize;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | isize::try_from(1u64);
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@ -141,7 +141,7 @@ error: casting `u64` to `usize` may truncate the value on targets with 32-bit wi
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LL | 1u64 as usize;
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| ^^^^^^^^^^^^^
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|
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_precision_loss)]` ...
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | usize::try_from(1u64);
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