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Inserting 5 characters into char(10) does not produce 5 padding spaces

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if they are two-byte multibyte characters. Same thing can be happen
if octet_length(multibyte_chars) == n where n is char(n).
Long standing bug since 7.3 days. Per report and fix from Yoshiyuki Asaba.
This commit is contained in:
Tatsuo Ishii 2005-05-24 23:02:54 +00:00
parent a94ace0796
commit 2a99455ca7
1 changed files with 9 additions and 3 deletions
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12
src/backend/parser/parse_expr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.179 2005/01/12 17:32:36 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.179.4.1 2005/05/24 23:02:54 ishii Exp $
*
*-------------------------------------------------------------------------
*/
@ -18,6 +18,7 @@
#include "catalog/pg_operator.h"
#include "catalog/pg_proc.h"
#include "commands/dbcommands.h"
#include "mb/pg_wchar.h"
#include "miscadmin.h"
#include "nodes/makefuncs.h"
#include "nodes/params.h"
@ -34,7 +35,6 @@
#include "utils/lsyscache.h"
#include "utils/syscache.h"
bool Transform_null_equals = false;
static Node *transformColumnRef(ParseState *pstate, ColumnRef *cref);
@ -1491,7 +1491,13 @@ exprTypmod(Node *expr)
{
case BPCHAROID:
if (!con->constisnull)
return VARSIZE(DatumGetPointer(con->constvalue));
{
int32 len = VARSIZE(DatumGetPointer(con->constvalue));
if (pg_database_encoding_max_length() > 1)
len = pg_mbstrlen_with_len(VARDATA(DatumGetPointer(con->constvalue)), len);
return len;
}
break;
default:
break;