rustc_lint::transmute

Function check_unnecessary_transmute

Source 
fn check_unnecessary_transmute<'tcx>(
    cx: &LateContext<'tcx>,
    expr: &'tcx Expr<'tcx>,
    callee: &'tcx Expr<'tcx>,
    arg: &'tcx Expr<'tcx>,
    const_context: Option<ConstContext>,
    src: Ty<'tcx>,
    dst: Ty<'tcx>,
)
Expand description

Check for transmutes that overlap with stdlib methods. For example, transmuting [u8; 4] to u32.

We chose not to lint u8 -> bool transmutes, see #140431.