return true
			}
		}
	}

	// "(3) Conversion of a Pointer to a uintptr and back, with arithmetic."
	return isSafeArith(info, x)
}

// isSafeArith reports whether x is a pointer arithmetic expression that is safe
// to convert to unsafe.Pointer.
func isSafeArith(info *types.Info, x ast.Expr) bool {
	switch x := astutil.Unparen(x).(type) {
	case *ast.CallExpr: