Cannot compile 4.0.23 agent on Solaris10

cc -DHAVE_CONFIG_H -I. -I../../include    -DZABBIX_DAEMON -m64 -g -I/usr/local/pcre/include -c -o libzbxagent_a-zbxkstat.o `test -f 'zbxkstat.c' || echo './'`zbxkstat.c
"zbxkstat.c", line 151: improper member use: updates
cc: acomp failed for zbxkstat.c
*** Error code 2
make: Fatal error: Command failed for target `libzbxagent_a-zbxkstat.o'
Current working directory /tmp/build/solaris/zabbix-4.0.23/src/zabbix_agent
*** Error code 1

# uname -a
SunOS solaris10 5.10 Generic_141445-09 i86pc i386 i86pc

# cat /etc/release
                       Solaris 10 10/09 s10x_u8wos_08a X86
           Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
                        Use is subject to license terms.
                           Assembled 16 September 2009