count(*) in binary mode returns 0

I have an implementation of binary format communication that is working
quite well but it is failing inexplicably on returning valid results for
the aggregate function count. It returns a correct result for instance for
the aggregate function max.

Here is some debug information to illustrate that I have debugged the host
order conversions and what have you in implementing this binary format. As
you can see, it is simply returning 0.

s:select count(*) from "User" where ("email" = $1)
valsl 1
val_str:t(at)t(dot)com len:7
result received
free_iter_pre
alloc_result pre
fname: count
nfields: 1
from_psql 00000000000000000000000000000000 bytes_to_read:4 read:4
host_order 00000000000000000000000000000000 bytes_to_read:4 read:4
conv_int ir:0
fname: count