//@ stderr-per-bitwidth #![allow(invalid_value)] // make sure we cannot allow away the errors tested here use std::mem; const BAD_UPVAR: &dyn FnOnce() = &{ //~ ERROR it is undefined behavior to use this value let bad_ref: &'static u16 = unsafe { mem::transmute(0usize) }; let another_var = 13; move || { let _ = bad_ref; let _ = another_var; } }; fn main() {}