See the diagnostic message from the build gcc itself below:

make[3]: Entering directory `/usr/src/zsh/zsh-4.3.4/Src/Builtins'
gawk -f ./rlimits.awk /usr/include/sys/resource.h /dev/null > rlimits.h
/usr/local/bin/gcc -c -I.  -DHAVE_CONFIG_H -DMODULE -O2  -o rlimits..o rlimits.c
rlimits.c: In function 'bin_unlimit':
rlimits.c:674: error: unrecognizable insn:
(insn 44 43 45 7 (set (reg:SI 84)
        (const:SI (plus:SI (mem:SI (symbol_ref:SI ("#i.current_limits") <var_decl 0x7ff917b8 current_limits>) [0 S4 A8])
                (const_int 4 [0x4])))) -1 (nil)
    (nil))
rlimits.c:674: internal compiler error: in extract_insn, at recog.c:2077
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
make[3]: *** [rlimits..o] Error 1


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please let me know how to correct this or how you to correct it.

regards,
 darel henman