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Change "if types change" to "if you later change the type"

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Fixes #3964.
This commit is contained in:
Matthew Kraai 2019-04-23 16:53:09 -07:00
parent 9897442f27
commit 9a43e09d77
4 changed files with 32 additions and 32 deletions
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2
clippy_lints/src/types.rs
View file

@ -949,7 +949,7 @@ fn span_lossless_lint(cx: &LateContext<'_, '_>, expr: &Expr, op: &Expr, cast_fro
CAST_LOSSLESS, CAST_LOSSLESS,
expr.span, expr.span,
&format!( &format!(
"casting {} to {} may become silently lossy if types change", "casting {} to {} may become silently lossy if you later change the type",
cast_from, cast_to cast_from, cast_to
), ),
"try", "try",

22
tests/ui/cast_lossless_float.stderr
View file

@ -1,4 +1,4 @@
error: casting i8 to f32 may become silently lossy if types change error: casting i8 to f32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:9:5 --> $DIR/cast_lossless_float.rs:9:5
| |
LL | x0 as f32; LL | x0 as f32;
@ -6,61 +6,61 @@ LL | x0 as f32;
| |
= note: `-D clippy::cast-lossless` implied by `-D warnings` = note: `-D clippy::cast-lossless` implied by `-D warnings`
error: casting i8 to f64 may become silently lossy if types change error: casting i8 to f64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:10:5 --> $DIR/cast_lossless_float.rs:10:5
| |
LL | x0 as f64; LL | x0 as f64;
| ^^^^^^^^^ help: try: `f64::from(x0)` | ^^^^^^^^^ help: try: `f64::from(x0)`
error: casting u8 to f32 may become silently lossy if types change error: casting u8 to f32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:12:5 --> $DIR/cast_lossless_float.rs:12:5
| |
LL | x1 as f32; LL | x1 as f32;
| ^^^^^^^^^ help: try: `f32::from(x1)` | ^^^^^^^^^ help: try: `f32::from(x1)`
error: casting u8 to f64 may become silently lossy if types change error: casting u8 to f64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:13:5 --> $DIR/cast_lossless_float.rs:13:5
| |
LL | x1 as f64; LL | x1 as f64;
| ^^^^^^^^^ help: try: `f64::from(x1)` | ^^^^^^^^^ help: try: `f64::from(x1)`
error: casting i16 to f32 may become silently lossy if types change error: casting i16 to f32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:15:5 --> $DIR/cast_lossless_float.rs:15:5
| |
LL | x2 as f32; LL | x2 as f32;
| ^^^^^^^^^ help: try: `f32::from(x2)` | ^^^^^^^^^ help: try: `f32::from(x2)`
error: casting i16 to f64 may become silently lossy if types change error: casting i16 to f64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:16:5 --> $DIR/cast_lossless_float.rs:16:5
| |
LL | x2 as f64; LL | x2 as f64;
| ^^^^^^^^^ help: try: `f64::from(x2)` | ^^^^^^^^^ help: try: `f64::from(x2)`
error: casting u16 to f32 may become silently lossy if types change error: casting u16 to f32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:18:5 --> $DIR/cast_lossless_float.rs:18:5
| |
LL | x3 as f32; LL | x3 as f32;
| ^^^^^^^^^ help: try: `f32::from(x3)` | ^^^^^^^^^ help: try: `f32::from(x3)`
error: casting u16 to f64 may become silently lossy if types change error: casting u16 to f64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:19:5 --> $DIR/cast_lossless_float.rs:19:5
| |
LL | x3 as f64; LL | x3 as f64;
| ^^^^^^^^^ help: try: `f64::from(x3)` | ^^^^^^^^^ help: try: `f64::from(x3)`
error: casting i32 to f64 may become silently lossy if types change error: casting i32 to f64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:21:5 --> $DIR/cast_lossless_float.rs:21:5
| |
LL | x4 as f64; LL | x4 as f64;
| ^^^^^^^^^ help: try: `f64::from(x4)` | ^^^^^^^^^ help: try: `f64::from(x4)`
error: casting u32 to f64 may become silently lossy if types change error: casting u32 to f64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:23:5 --> $DIR/cast_lossless_float.rs:23:5
| |
LL | x5 as f64; LL | x5 as f64;
| ^^^^^^^^^ help: try: `f64::from(x5)` | ^^^^^^^^^ help: try: `f64::from(x5)`
error: casting f32 to f64 may become silently lossy if types change error: casting f32 to f64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_float.rs:26:5 --> $DIR/cast_lossless_float.rs:26:5
| |
LL | 1.0f32 as f64; LL | 1.0f32 as f64;

38
tests/ui/cast_lossless_integer.stderr
View file

@ -1,4 +1,4 @@
error: casting i8 to i16 may become silently lossy if types change error: casting i8 to i16 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:8:5 --> $DIR/cast_lossless_integer.rs:8:5
| |
LL | 1i8 as i16; LL | 1i8 as i16;
@ -6,109 +6,109 @@ LL | 1i8 as i16;
| |
= note: `-D clippy::cast-lossless` implied by `-D warnings` = note: `-D clippy::cast-lossless` implied by `-D warnings`
error: casting i8 to i32 may become silently lossy if types change error: casting i8 to i32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:9:5 --> $DIR/cast_lossless_integer.rs:9:5
| |
LL | 1i8 as i32; LL | 1i8 as i32;
| ^^^^^^^^^^ help: try: `i32::from(1i8)` | ^^^^^^^^^^ help: try: `i32::from(1i8)`
error: casting i8 to i64 may become silently lossy if types change error: casting i8 to i64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:10:5 --> $DIR/cast_lossless_integer.rs:10:5
| |
LL | 1i8 as i64; LL | 1i8 as i64;
| ^^^^^^^^^^ help: try: `i64::from(1i8)` | ^^^^^^^^^^ help: try: `i64::from(1i8)`
error: casting u8 to i16 may become silently lossy if types change error: casting u8 to i16 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:11:5 --> $DIR/cast_lossless_integer.rs:11:5
| |
LL | 1u8 as i16; LL | 1u8 as i16;
| ^^^^^^^^^^ help: try: `i16::from(1u8)` | ^^^^^^^^^^ help: try: `i16::from(1u8)`
error: casting u8 to i32 may become silently lossy if types change error: casting u8 to i32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:12:5 --> $DIR/cast_lossless_integer.rs:12:5
| |
LL | 1u8 as i32; LL | 1u8 as i32;
| ^^^^^^^^^^ help: try: `i32::from(1u8)` | ^^^^^^^^^^ help: try: `i32::from(1u8)`
error: casting u8 to i64 may become silently lossy if types change error: casting u8 to i64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:13:5 --> $DIR/cast_lossless_integer.rs:13:5
| |
LL | 1u8 as i64; LL | 1u8 as i64;
| ^^^^^^^^^^ help: try: `i64::from(1u8)` | ^^^^^^^^^^ help: try: `i64::from(1u8)`
error: casting u8 to u16 may become silently lossy if types change error: casting u8 to u16 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:14:5 --> $DIR/cast_lossless_integer.rs:14:5
| |
LL | 1u8 as u16; LL | 1u8 as u16;
| ^^^^^^^^^^ help: try: `u16::from(1u8)` | ^^^^^^^^^^ help: try: `u16::from(1u8)`
error: casting u8 to u32 may become silently lossy if types change error: casting u8 to u32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:15:5 --> $DIR/cast_lossless_integer.rs:15:5
| |
LL | 1u8 as u32; LL | 1u8 as u32;
| ^^^^^^^^^^ help: try: `u32::from(1u8)` | ^^^^^^^^^^ help: try: `u32::from(1u8)`
error: casting u8 to u64 may become silently lossy if types change error: casting u8 to u64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:16:5 --> $DIR/cast_lossless_integer.rs:16:5
| |
LL | 1u8 as u64; LL | 1u8 as u64;
| ^^^^^^^^^^ help: try: `u64::from(1u8)` | ^^^^^^^^^^ help: try: `u64::from(1u8)`
error: casting i16 to i32 may become silently lossy if types change error: casting i16 to i32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:17:5 --> $DIR/cast_lossless_integer.rs:17:5
| |
LL | 1i16 as i32; LL | 1i16 as i32;
| ^^^^^^^^^^^ help: try: `i32::from(1i16)` | ^^^^^^^^^^^ help: try: `i32::from(1i16)`
error: casting i16 to i64 may become silently lossy if types change error: casting i16 to i64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:18:5 --> $DIR/cast_lossless_integer.rs:18:5
| |
LL | 1i16 as i64; LL | 1i16 as i64;
| ^^^^^^^^^^^ help: try: `i64::from(1i16)` | ^^^^^^^^^^^ help: try: `i64::from(1i16)`
error: casting u16 to i32 may become silently lossy if types change error: casting u16 to i32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:19:5 --> $DIR/cast_lossless_integer.rs:19:5
| |
LL | 1u16 as i32; LL | 1u16 as i32;
| ^^^^^^^^^^^ help: try: `i32::from(1u16)` | ^^^^^^^^^^^ help: try: `i32::from(1u16)`
error: casting u16 to i64 may become silently lossy if types change error: casting u16 to i64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:20:5 --> $DIR/cast_lossless_integer.rs:20:5
| |
LL | 1u16 as i64; LL | 1u16 as i64;
| ^^^^^^^^^^^ help: try: `i64::from(1u16)` | ^^^^^^^^^^^ help: try: `i64::from(1u16)`
error: casting u16 to u32 may become silently lossy if types change error: casting u16 to u32 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:21:5 --> $DIR/cast_lossless_integer.rs:21:5
| |
LL | 1u16 as u32; LL | 1u16 as u32;
| ^^^^^^^^^^^ help: try: `u32::from(1u16)` | ^^^^^^^^^^^ help: try: `u32::from(1u16)`
error: casting u16 to u64 may become silently lossy if types change error: casting u16 to u64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:22:5 --> $DIR/cast_lossless_integer.rs:22:5
| |
LL | 1u16 as u64; LL | 1u16 as u64;
| ^^^^^^^^^^^ help: try: `u64::from(1u16)` | ^^^^^^^^^^^ help: try: `u64::from(1u16)`
error: casting i32 to i64 may become silently lossy if types change error: casting i32 to i64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:23:5 --> $DIR/cast_lossless_integer.rs:23:5
| |
LL | 1i32 as i64; LL | 1i32 as i64;
| ^^^^^^^^^^^ help: try: `i64::from(1i32)` | ^^^^^^^^^^^ help: try: `i64::from(1i32)`
error: casting u32 to i64 may become silently lossy if types change error: casting u32 to i64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:24:5 --> $DIR/cast_lossless_integer.rs:24:5
| |
LL | 1u32 as i64; LL | 1u32 as i64;
| ^^^^^^^^^^^ help: try: `i64::from(1u32)` | ^^^^^^^^^^^ help: try: `i64::from(1u32)`
error: casting u32 to u64 may become silently lossy if types change error: casting u32 to u64 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:25:5 --> $DIR/cast_lossless_integer.rs:25:5
| |
LL | 1u32 as u64; LL | 1u32 as u64;
| ^^^^^^^^^^^ help: try: `u64::from(1u32)` | ^^^^^^^^^^^ help: try: `u64::from(1u32)`
error: casting u8 to u16 may become silently lossy if types change error: casting u8 to u16 may become silently lossy if you later change the type
--> $DIR/cast_lossless_integer.rs:28:5 --> $DIR/cast_lossless_integer.rs:28:5
| |
LL | (1u8 + 1u8) as u16; LL | (1u8 + 1u8) as u16;

2
tests/ui/types.stderr
View file

@ -1,4 +1,4 @@
error: casting i32 to i64 may become silently lossy if types change error: casting i32 to i64 may become silently lossy if you later change the type
--> $DIR/types.rs:13:22 --> $DIR/types.rs:13:22
| |
LL | let c_i64: i64 = c as i64; LL | let c_i64: i64 = c as i64;