Bug#15375 Unassigned multibyte codes are broken

  into parts when converting to Unicode.
m_ctype.h:
  Reorganizing mb_wc return codes to be able
  to return "an unassigned N-byte-long character".
sql_string.cc:
  Adding code to detect and properly handle
  unassigned characters (i.e. the those character
  which are correctly formed according to the 
  character specifications, but don't have Unicode
  mapping).
Many files:
  Fixing conversion function to return new codes.
ctype_ujis.test, ctype_gbk.test, ctype_big5.test:
  Adding a test case.
ctype_ujis.result, ctype_gbk.result, ctype_big5.result:
  Fixing results accordingly.


include/m_ctype.h:
  Reorganizing mb_wc return codes to be able
  to return "an unassigned N-byte long character".
  Bug#15375 Unassigned multibyte codes are broken into parts when converting to Unicode.
mysql-test/r/ctype_big5.result:
  Fixing results accordingly.
mysql-test/r/ctype_gbk.result:
  Fixing results accordingly.
mysql-test/r/ctype_ujis.result:
  Fixing results accordingly.
mysql-test/t/ctype_big5.test:
  Adding a test case.
mysql-test/t/ctype_gbk.test:
  Adding a test case.
mysql-test/t/ctype_ujis.test:
  Adding a test case.
sql/sql_string.cc:
  Adding code to detect and properly hanlde
  unassigned characters (i.e. the those character
  which are correctly formed according to the 
  character specifications, but don't have Unicode
  mapping).
strings/ctype-big5.c:
  Fixing conversion function to return new codes.
strings/ctype-bin.c:
  Fixing conversion function to return new codes.
strings/ctype-cp932.c:
  Fixing conversion function to return new codes.
strings/ctype-euc_kr.c:
  Fixing conversion function to return new codes.
strings/ctype-gb2312.c:
  Fixing conversion function to return new codes.
strings/ctype-gbk.c:
  Fixing conversion function to return new codes.
strings/ctype-latin1.c:
  Fixing conversion function to return new codes.
strings/ctype-simple.c:
  Fixing conversion function to return new codes.
strings/ctype-sjis.c:
  Fixing conversion function to return new codes.
strings/ctype-tis620.c:
  Fixing conversion function to return new codes.
strings/ctype-ucs2.c:
  Fixing conversion function to return new codes.
strings/ctype-ujis.c:
  Fixing conversion function to return new codes.
strings/ctype-utf8.c:
  Fixing conversion function to return new codes.

1 files changed, 4 insertions, 4 deletions

diff --git a/strings/ctype-gbk.c b/strings/ctype-gbk.c
index b5b86984794..a58c99fa1d6 100644
--- a/strings/ctype-gbk.c
+++ b/strings/ctype-gbk.c
@@ -9889,7 +9889,7 @@ my_wc_mb_gbk(CHARSET_INFO *cs  __attribute__((unused)),
     return MY_CS_ILUNI;
   
   if (s+2>e)
-    return MY_CS_TOOSMALL;
+    return MY_CS_TOOSMALL2;
     
   s[0]=code>>8;
   s[1]=code&0xFF;
@@ -9903,7 +9903,7 @@ my_mb_wc_gbk(CHARSET_INFO *cs __attribute__((unused)),
   int hi;
   
   if (s >= e)
-    return MY_CS_TOOFEW(0);
+    return MY_CS_TOOSMALL;
   
   hi=s[0];
   
@@ -9914,10 +9914,10 @@ my_mb_wc_gbk(CHARSET_INFO *cs __attribute__((unused)),
   }
   
   if (s+2>e)
-    return MY_CS_TOOFEW(0);
+    return MY_CS_TOOSMALL2;
     
   if (!(pwc[0]=func_gbk_uni_onechar( (hi<<8) + s[1])))
-    return MY_CS_ILSEQ;
+    return -2;
   
   return 2;