Re: new BIND in 10.0_RC5/sparc dies w/Bus error

[Christos Zoulas <christos%zoulas.com@localhost>]

On 2024-03-05 1:13 am, matthew green wrote:
> ah.  the problem is that struct isc_nmhandle grew a pointer member,
> adding 4 bytes to the struct size, and it uses C99 [] variable array
> for the final member, which is later assigned to other pointers, and
> this memory was now only 4-byte aligned.  this hack patch works to
> stop named crashing for me, but i'll let christos figure out what the
> right general solution here is.
>
>
> .mrg.
>
>
> Index: lib/isc/netmgr/netmgr-int.h
> ===================================================================
> RCS file: 
> /cvsroot/src/external/mpl/bind/dist/lib/isc/netmgr/netmgr-int.h,v
> retrieving revision 1.8.2.1
> diff -p -u -r1.8.2.1 netmgr-int.h
> --- lib/isc/netmgr/netmgr-int.h	25 Feb 2024 15:47:24 -0000	1.8.2.1
> +++ lib/isc/netmgr/netmgr-int.h	5 Mar 2024 06:12:50 -0000
> @@ -276,7 +276,7 @@ struct isc_nmhandle {
>  	LINK(isc_nmhandle_t) active_link;
>  #endif
>  	void *opaque;
> -	char extra[];
> +	char extra[] __attribute__((__aligned__(8)));
>  };
>
>  typedef enum isc__netievent_type {

Does the following work, and is it more palatable?

        union {
                void *p;
                long double d;
                long long lld;
                intmax_t im;
        } extra[];

or just:

--
christos