Tatsuo Ishii wrote:
> Apparently your hack does not kill #define USE_WIDE_UPPER_LOWER.
>
> BTW, the current code for upper/lower etc. seems to be broken. The
> exact problem you have are happening in Japanese encodings too(EUC_JP)
> too. PostgreSQL should not use wide-character method if LC_CTYPE is C.

Here is the patch I made. I will apply it to CVS HEAD and 8.0.X because
it is a bug fix.

---------------------------------------------------------------------------

> --
> Tatsuo Ishii
>
> > L.S.
> >
> > I have a database created on:
> >
> > db=# select version();
> > version
> > ---------------------------------------------------------------------
> > PostgreSQL 8.0.1 on i686-pc-linux-gnu, compiled by GCC egcs-2.91.66
> > (1 row)
> >
> >
> > The initdb was done using no-locale and unicode as default encoding, the
> > particular database itself is indeed encoded as UNICODE.
> >
> >
> > Due to a buggy glibc, the following patch was applied to this install in order
> > to avoid a crash on things like 'upper(<string>)':
> >
> > --- oracle_compat.c_orig Mon Dec 6 22:14:11 2004
> > +++ oracle_compat.c Mon Dec 6 22:14:24 2004
> > @@ -43,7 +43,7 @@
> > * We assume if we have these two functions, we have their friends too, and
> > * can use the wide-character method.
> > */
> > -#if defined(HAVE_WCSTOMBS) && defined(HAVE_TOWLOWER)
> > +#if defined(HAVE_WCSTOMBS) && defined(HAVE_TOWLOWER) && FALSE
> > #define USE_WIDE_UPPER_LOWER
> > #endif
> >
> >
> > The database on this machine was dumped and then restored on another, which
> > has a more recent installation of Slack on it:
> >
> >
> > db=# select version();
> > version
> > ------------------------------------------------------------------------
> > PostgreSQL 8.0.1 on i586-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2.3
> > (1 row)
> >
> >
> > Again, the initdb on this machine was done using no-locale and unicode as
> > default encoding, the particular database obviously is also encoded as
> > UNICODE.
> >
> >
> >
> > On the second machine, I'm now getting the following:
> >
> > db=# select 'J?TERBOG';
> > ?column?
> > ----------
> > J?TERBOG
> > (1 row)
> >
> > db=# select lower('J?TERBOG');
> > ERROR: invalid multibyte character for locale
> > HINT: The server's LC_CTYPE locale is probably incompatible with the database
> > encoding.
> >
> >
> >
> > As far as I can tell, this didn't happen with v8.0.0, but I'm afraid I can't
> > be totally sure about that. Obviously, the error doesn't occur on the first
> > machine due to the hack needed for the buggy glibc.
> >
> >
> > I'd appreciate a pointer as to what is causing this. It 'shouldn't' be the
> > hack nor the dump/restore cycle, but.......?
> >
> >
> > TIA.
> >
> >
> >
> > --
> > Best,
> >
> >
> >
> >
> > Frank.
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 7: don't forget to increase your free space map settings
> >
>
> ---------------------------(end of broadcast)---------------------------
> TIP 2: you can get off all lists at once with the unregister command
> (send "unregister YourEmailAddressHere" to majordomo@postgresql.org)
>

--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073

Index: src/backend/utils/adt/oracle_compat.c
================================================== =================
RCS file: /cvsroot/pgsql/src/backend/utils/adt/oracle_compat.c,v
retrieving revision 1.57
diff -c -c -r1.57 oracle_compat.c
*** src/backend/utils/adt/oracle_compat.c 31 Dec 2004 22:01:22 -0000 1.57
--- src/backend/utils/adt/oracle_compat.c 15 Mar 2005 13:45:22 -0000
***************
*** 166,173 ****
lower(PG_FUNCTION_ARGS)
{
#ifdef USE_WIDE_UPPER_LOWER
! /* use wide char code only when max encoding length > one */
! if (pg_database_encoding_max_length() > 1)
{
text *string = PG_GETARG_TEXT_P(0);
text *result;
--- 166,173 ----
lower(PG_FUNCTION_ARGS)
{
#ifdef USE_WIDE_UPPER_LOWER
! /* use wide char code only when max encoding length > 1 and ctype != C */
! if (pg_database_encoding_max_length() > 1 && !lc_ctype_is_c())
{
text *string = PG_GETARG_TEXT_P(0);
text *result;
***************
*** 228,235 ****
upper(PG_FUNCTION_ARGS)
{
#ifdef USE_WIDE_UPPER_LOWER
! /* use wide char code only when max encoding length > one */
! if (pg_database_encoding_max_length() > 1)
{
text *string = PG_GETARG_TEXT_P(0);
text *result;
--- 228,235 ----
upper(PG_FUNCTION_ARGS)
{
#ifdef USE_WIDE_UPPER_LOWER
! /* use wide char code only when max encoding length > 1 and ctype != C */
! if (pg_database_encoding_max_length() > 1 && !lc_ctype_is_c())
{
text *string = PG_GETARG_TEXT_P(0);
text *result;
***************
*** 293,300 ****
initcap(PG_FUNCTION_ARGS)
{
#ifdef USE_WIDE_UPPER_LOWER
! /* use wide char code only when max encoding length > one */
! if (pg_database_encoding_max_length() > 1)
{
text *string = PG_GETARG_TEXT_P(0);
text *result;
--- 293,300 ----
initcap(PG_FUNCTION_ARGS)
{
#ifdef USE_WIDE_UPPER_LOWER
! /* use wide char code only when max encoding length > 1 and ctype != C */
! if (pg_database_encoding_max_length() > 1 && !lc_ctype_is_c())
{
text *string = PG_GETARG_TEXT_P(0);
text *result;
Index: src/backend/utils/adt/pg_locale.c
================================================== =================
RCS file: /cvsroot/pgsql/src/backend/utils/adt/pg_locale.c,v
retrieving revision 1.30
diff -c -c -r1.30 pg_locale.c
*** src/backend/utils/adt/pg_locale.c 1 Jan 2005 05:43:07 -0000 1.30
--- src/backend/utils/adt/pg_locale.c 15 Mar 2005 13:45:22 -0000
***************
*** 197,202 ****
--- 197,229 ----


/*
+ * We'd like to cache whether LC_CTYPE is C (or POSIX), so we can
+ * optimize a few code paths in various places.
+ */
+ bool
+ lc_ctype_is_c(void)
+ {
+ /* Cache result so we only have to compute it once */
+ static int result = -1;
+ char *localeptr;
+
+ if (result >= 0)
+ return (bool) result;
+ localeptr = setlocale(LC_CTYPE, NULL);
+ if (!localeptr)
+ elog(ERROR, "invalid LC_CTYPE setting");
+
+ if (strcmp(localeptr, "C") == 0)
+ result = true;
+ else if (strcmp(localeptr, "POSIX") == 0)
+ result = true;
+ else
+ result = false;
+ return (bool) result;
+ }
+
+
+ /*
* Frees the malloced content of a struct lconv. (But not the struct
* itself.)
*/
Index: src/include/utils/pg_locale.h
================================================== =================
RCS file: /cvsroot/pgsql/src/include/utils/pg_locale.h,v
retrieving revision 1.19
diff -c -c -r1.19 pg_locale.h
*** src/include/utils/pg_locale.h 1 Jan 2005 05:43:09 -0000 1.19
--- src/include/utils/pg_locale.h 15 Mar 2005 13:45:23 -0000
***************
*** 32,37 ****
--- 32,38 ----
bool doit, GucSource source);

extern bool lc_collate_is_c(void);
+ extern bool lc_ctype_is_c(void);

/*
* Return the POSIX lconv struct (contains number/money formatting


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