extern "Rust" { fn miri_backtrace_size(flags: u64) -> usize; fn miri_get_backtrace(flags: u64, buf: *mut *mut ()); fn miri_resolve_frame(ptr: *mut (), flags: u64); } fn main() { let size = unsafe { miri_backtrace_size(0) }; let mut frames = vec![std::ptr::null_mut(); size]; unsafe { miri_get_backtrace(1, frames.as_mut_ptr()) }; for frame in frames.iter() { unsafe { miri_resolve_frame(*frame, 0); //~ ERROR: Undefined Behavior: bad declaration of miri_resolve_frame - should return a struct with 5 fields } } }