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

[matthew green <mrg%eterna23.net@localhost>]

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 {