Static rustc_lint::ptr_nulls::USELESS_PTR_NULL_CHECKS

static USELESS_PTR_NULL_CHECKS: &Lint

The useless_ptr_null_checks lint checks for useless null checks against pointers obtained from non-null types.

Example

let fn_ptr: fn() = /* somehow obtained nullable function pointer */

if (fn_ptr as *const ()).is_null() { /* ... */ }

{{produces}}

Explanation

Function pointers and references are assumed to be non-null, checking them for null will always return false.