Re: ilike and --enable-multibyte=KOI8

On Fri, Dec 08, 2000 at 08:23:26PM +0900, Tatsuo Ishii wrote:
> > Hello, Can anybody check and confirm(or not) this:
> >
> > if pgsql(DEVEL, from cvs-server) is built with locale and multibyte then
> >
> > "select * from table where row ilike '%a%'" crashes pgsql.
> > "select * from table where row ilike 'a%'" doesn't craches.
> > "select * from table where row  like '%a%'" doesn't craches.
> >
> > If pgsql is built only with locale, pgsql isn't crashed...
> >
> > please, give me an advice for solving this problemm. I need pgsql with both
> > this options...
>
> Not reproduced here. It might be a bug depending on particular
> data. Can you show me gdb backtrace?
I will try to make the easiest situation with this bug,
for now, I know only this:

1. FreeBSD 4.2-STABLE, 5-CURRENT.
2. the freshest pgsql from cvs
3. I use locale, ru_RU.KOI8-R (Russian charset)
4. ./configure --enable-locale --enable-multibyte=KOI8
5. the query is(if in query remove following %, pg doesn't crash):
---
select distinct films.* from films
left join music_titles using(id_f)
left join mt_authors using (id_mt)
left join authors using(id_a)
where
music_titles.mus_name iLike '%asd%' and
(films.director iLike '%qwe%' or authors.family iLike 'zxc%');
---

6. gdb shows:

hjugo@root[~]# gdb /usr/local/pgsql/bin/postgres /usr/local/pgsql/data/base/18731/postgres.core
GNU gdb 4.18
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This GDB was configured as "i386-unknown-freebsd"...
Core was generated by `postgres'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libz.so.2...done.
Reading symbols from /usr/lib/libcrypt.so.2...done.
Reading symbols from /usr/lib/libm.so.2...done.
Reading symbols from /usr/lib/libutil.so.3...done.
Reading symbols from /usr/lib/libreadline.so.4...done.
Reading symbols from /usr/lib/libncurses.so.5...done.
Reading symbols from /usr/lib/libc.so.5...done.
Reading symbols from /usr/libexec/ld-elf.so.1...done.
#0  0x8114771 in MatchTextIC (t=???, tlen=???, p=???, plen=???) at like.c:546
546                    NextChar(t, tlen);
(gdb) bt
#0  0x8114771 in MatchTextIC (t=???, tlen=???, p=???, plen=???) at like.c:546
Cannot access memory at address 0x0.
(gdb) print t
$1 = (unsigned char *) 0x8338bde "ЯЧЕНКО В"
(gdb) print tlen
Address of symbol "tlen" is unknown.
(gdb) print p
$2 = (unsigned char *) 0x829b8dd "asd%пппппппpЯ\036\b\020"
(gdb) print plen
$3 = 4
(gdb)

--
Bye
Juriy Goloveshkin