Fix long standing Asian multibyte charsets bug.

See:

Subject: [HACKERS] bugs with certain Asian multibyte charsets
From: Tatsuo Ishii <[email protected]>
To: [email protected]
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 26c52d21bba3ac899430fc04d7a536725727e6e8..0f69f96a51c11a2c422ff5a1367f1139b66656ef 100644 (file)
--- a/src/backend/utils/mb/wchar.c
+++ b/src/backend/utils/mb/wchar.c
@@ -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)