error[E0133]: call to unsafe function is unsafe and requires unsafe function or block --> $DIR/unchecked_math_unsafe.rs:8:15 | LL | let add = std::intrinsics::unchecked_add(x, y); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function | = note: consult the function's documentation for information on how to avoid undefined behavior error[E0133]: call to unsafe function is unsafe and requires unsafe function or block --> $DIR/unchecked_math_unsafe.rs:9:15 | LL | let sub = std::intrinsics::unchecked_sub(x, y); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function | = note: consult the function's documentation for information on how to avoid undefined behavior error[E0133]: call to unsafe function is unsafe and requires unsafe function or block --> $DIR/unchecked_math_unsafe.rs:10:15 | LL | let mul = std::intrinsics::unchecked_mul(x, y); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function | = note: consult the function's documentation for information on how to avoid undefined behavior error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0133`.