Odd Compile Error in SQLRPGLE Precompiler

I have this SQL statement embedded in RPGLE:

exec sql
declare C3 cursor for
select coalesce(g.ggpcd, 'OTHER') as ggpcd,
sum(case
when g.ggpcd = 'PROG' then
coalesce(p.lepoehr, 0)
else
0 <===
end) as lepoehr,
sum(case
when r.micno < 9000
and r.micno not in (8027,8028,8056,8061,8118,8010,8131)
then
r.repoh + (r.reunh * r.rqtdu) + r.reseh
else
r.reunh * r.rqtdu
end) as rtdhrs
from jcrwmp r
join jcoprf o
on (o.oprtn = r.ropcd)
or (o.oprtn = 'QCMI' and r.ropcd = 'PRGCM')
left outer join jcopgf g
on g.ggpcd = o.ogpcd
and g.gstat = 'A'
and g.gqstp = 'Y'
left outer join jcprgdlep p
on p.lejobyr = r.jobyr
and p.lejobno = r.jobno
and p.ledgpno = r.dgpno
and p.lerstep = r.rstep
where r.jobyr = :job.jobyr and r.jobno = :job.jobno
group by g.ggpcd;

I know it has compiled in the past as the program is in production. But now
I am trying to compile it under 7.1 with most recent PTF's, and it is
giving me an RNF0308 at the "<===". apparently it thinks that one of the
e's in the vecinity is supposed to be a float literal, but none of them are
formatted properly hence the RNF0308. If I enclose the 0 in quotes like
this '0', it compiles properly. Interestingly, SQuirreL returns the correct
output whether I leave the 0 plain, or enclose it in quotes.