pub static LARGE_ASSIGNMENTS: &Lint
Expand description
The large_assignments
lint detects when objects of large
types are being moved around.
§Example
ⓘ
let x = [0; 50000];
let y = x;
produces:
warning: moving a large value
--> $DIR/move-large.rs:1:3
let y = x;
- Copied large value here
§Explanation
When using a large type in a plain assignment or in a function argument, idiomatic code can be inefficient. Ideally appropriate optimizations would resolve this, but such optimizations are only done in a best-effort manner. This lint will trigger on all sites of large moves and thus allow the user to resolve them in code.