pub unsafe extern "C" fn _Unwind_Backtrace(
trace: extern "C" fn(ctx: *mut _Unwind_Context, arg: *mut c_void) -> _Unwind_Reason_Code,
trace_argument: *mut c_void,
) -> _Unwind_Reason_Code
pub unsafe extern "C" fn _Unwind_Backtrace(
trace: extern "C" fn(ctx: *mut _Unwind_Context, arg: *mut c_void) -> _Unwind_Reason_Code,
trace_argument: *mut c_void,
) -> _Unwind_Reason_Code