Fix long standing Asian multibyte charsets bug.

See:

Subject: [HACKERS] bugs with certain Asian multibyte charsets
From: Tatsuo Ishii <ishii@sraoss.co.jp>
To: pgsql-hackers@postgresql.org
Date: Sat, 24 Dec 2005 18:25:33 +0900 (JST)

for more details.

diff --git a/src/backend/utils/mb/wchar.c b/src/backend/utils/mb/wchar.c
index c72980e8e9af73c3a4da5aca8fe6d6f2c2c570fe..ff78b30a91e506accaff7665c474b13ce1d8dbaa 100644 (file)
--- a/src/backend/utils/mb/wchar.c
+++ b/src/backend/utils/mb/wchar.c
@@ -1,7 +1,7 @@
 /*
  * conversion functions between pg_wchar and multibyte streams.
  * Tatsuo Ishii
- * $Id: wchar.c,v 1.30.2.1 2003/01/11 06:59:30 ishii Exp $
+ * $Id: wchar.c,v 1.30.2.2 2005/12/24 12:08:10 ishii Exp $
  *
  * WIN1250 client encoding updated by Pavel Behal
  *
@@ -70,7 +70,7 @@ static int    pg_euc2wchar_with_len
                {
                        from++;
                        *to = *from++ << 8;
-                       *to |= 0x3f & *from++;
+                       *to |= 0x7f & *from++;
                        len -= 3;
                }
                else if ((*from & 0x80) && len >= 2)
@@ -150,7 +150,7 @@ static int  pg_euccn2wchar_with_len
                if (*from == SS2 && len >= 3)
                {
                        from++;
-                       *to = 0x3f00 & (*from++ << 8);
+                       *to = 0x7f00 & (*from++ << 8);
                        *to = *from++;
                        len -= 3;
                }
@@ -158,7 +158,7 @@ static int  pg_euccn2wchar_with_len
                {
                        from++;
                        *to = *from++ << 8;
-                       *to |= 0x3f & *from++;
+                       *to |= 0x7f & *from++;
                        len -= 3;
                }
                else if ((*from & 0x80) && len >= 2)
@@ -213,7 +213,7 @@ static int  pg_euctw2wchar_with_len
                {
                        from++;
                        *to = *from++ << 8;
-                       *to |= 0x3f & *from++;
+                       *to |= 0x7f & *from++;
                        len -= 3;
                }
                else if ((*from & 0x80) && len >= 2)