This bug appears to be similar to ZBX-2634.

$ CC=gcc CFLAGS=-O2 ./configure --prefix="/tmp/zabbix/agent" --enable-agent --enable-ipv6
$ make
$ make install

23454:20120707:154526.434 Starting Zabbix Agent [Zabbix server]. Zabbix 2.0.1 (revision 28455).
23455:20120707:154526.439 agent #0 started [collector]
23456:20120707:154526.441 agent #1 started [listener]
23457:20120707:154526.442 agent #2 started [listener]
23458:20120707:154526.444 agent #3 started [listener]
23455:20120707:154526.458 Got signal [signal:10(SIGBUS),reason:1,refaddr:fec0e4e4]. Crashing ...
23455:20120707:154526.458 ====== Fatal information: ======
23455:20120707:154526.459 program counter not available for this architecture
23455:20120707:154526.459 === Registers: ===
23455:20120707:154526.459 register dump not available for this architecture
23455:20120707:154526.460 === Backtrace: ===
23455:20120707:154526.460 backtrace not available for this platform
23455:20120707:154526.460 === Memory map: ===
23455:20120707:154526.460 memory map not available for this platform
23455:20120707:154526.461 ================================
23454:20120707:154526.464 One child process died (PID:23455,exitcode/signal:-1). Exiting ...
23454:20120707:154528.471 Zabbix Agent stopped. Zabbix 2.0.1 (revision 28455).