pub unsafe extern "C" fn syz_handleSetUserdata(
handle: syz_Handle,
userdata: *mut c_void,
free_callback: syz_UserdataFreeCallback,
) -> syz_ErrorCodepub unsafe extern "C" fn syz_handleSetUserdata(
handle: syz_Handle,
userdata: *mut c_void,
free_callback: syz_UserdataFreeCallback,
) -> syz_ErrorCode