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https://github.com/rust-lang/rust-clippy
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Remove bad cast in test, cover more cases
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parent
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commit
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2 changed files with 61 additions and 12 deletions
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@ -1,12 +1,18 @@
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fn main() {
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unsafe {
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let x = &() as *const ();
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x.offset(0);
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x.wrapping_add(0);
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x.sub(0);
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x.wrapping_sub(0);
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let m = &mut () as *mut ();
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m.offset(0);
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m.wrapping_add(0);
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m.sub(0);
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m.wrapping_sub(0);
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let y = &1 as *const u8;
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let c = &() as *const ();
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c.offset(0);
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c.wrapping_add(0);
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c.sub(0);
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c.wrapping_sub(0);
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let y = &1 as *const i32;
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y.offset(0);
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}
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}
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@ -1,9 +1,52 @@
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error[E0606]: casting `&i32` as `*const u8` is invalid
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--> $DIR/zero_offset.rs:9:17
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error: offset calculation on zero-sized value
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--> $DIR/zero_offset.rs:4:9
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LL | let y = &1 as *const u8;
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| ^^^^^^^^^^^^^^^
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LL | m.offset(0);
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| ^^^^^^^^^^^
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= note: `#[deny(clippy::zst_offset)]` on by default
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error: aborting due to previous error
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error: offset calculation on zero-sized value
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--> $DIR/zero_offset.rs:5:9
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LL | m.wrapping_add(0);
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| ^^^^^^^^^^^^^^^^^
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error: offset calculation on zero-sized value
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--> $DIR/zero_offset.rs:6:9
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LL | m.sub(0);
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| ^^^^^^^^
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error: offset calculation on zero-sized value
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--> $DIR/zero_offset.rs:7:9
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LL | m.wrapping_sub(0);
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| ^^^^^^^^^^^^^^^^^
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error: offset calculation on zero-sized value
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--> $DIR/zero_offset.rs:10:9
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LL | c.offset(0);
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| ^^^^^^^^^^^
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error: offset calculation on zero-sized value
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--> $DIR/zero_offset.rs:11:9
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LL | c.wrapping_add(0);
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| ^^^^^^^^^^^^^^^^^
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error: offset calculation on zero-sized value
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--> $DIR/zero_offset.rs:12:9
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LL | c.sub(0);
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| ^^^^^^^^
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error: offset calculation on zero-sized value
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--> $DIR/zero_offset.rs:13:9
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LL | c.wrapping_sub(0);
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| ^^^^^^^^^^^^^^^^^
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error: aborting due to 8 previous errors
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For more information about this error, try `rustc --explain E0606`.
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