BUG#24487120 - SLAVE'S SLAVE_SQL_RUNNING IS STOPPED DURING

 LOAD DATA AT MASTER.

Revert "BUG#23080148 - BACKPORT BUG 14653594 AND BUG 20683959 TO"

This reverts commit 1d31f5b3090d129382b50b95512f2f79305715a1.
The commit causes replication incompatibility between minor revisions
and based on discussion with Srinivasarao, the patch is reverted.

mysql-test/r/loaddata.result

@@ -507,7 +507,7 @@ DROP TABLE t1;
 # Bug#11765139  58069: LOAD DATA INFILE: VALGRIND REPORTS INVALID MEMORY READS AND WRITES WITH U
 #
 CREATE TABLE t1(f1 INT);
-SELECT 0xE1C330 INTO OUTFILE 't1.dat';
+SELECT 0xE1BB30 INTO OUTFILE 't1.dat';
 LOAD DATA INFILE 't1.dat' IGNORE INTO TABLE t1 CHARACTER SET utf8;
 DROP TABLE t1;
 #
@@ -532,27 +532,3 @@ FIELDS TERMINATED BY 't' LINES TERMINATED BY '';
 Got one of the listed errors
 SET @@sql_mode= @old_mode;
 DROP TABLE t1;
-
-#
-#  Bug#23080148 - Backport of Bug#20683959.
-#  Bug#20683959 LOAD DATA INFILE IGNORES A SPECIFIC ROW SILENTLY
-#               UNDER DB CHARSET IS UTF8.
-#
-CREATE DATABASE d1 CHARSET latin1;
-USE d1;
-CREATE TABLE t1 (val TEXT);
-LOAD DATA INFILE '../../std_data/bug20683959loaddata.txt' INTO TABLE t1;
-SELECT COUNT(*) FROM t1;
-COUNT(*)
-1
-SELECT HEX(val) FROM t1;
-HEX(val)
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
-CREATE DATABASE d2 CHARSET utf8;
-USE d2;
-CREATE TABLE t1 (val TEXT);
-LOAD DATA INFILE '../../std_data/bug20683959loaddata.txt' INTO TABLE t1;
-ERROR HY000: Invalid utf8 character string: '"RT @niouzechun: \9058\221A'
-DROP TABLE d1.t1, d2.t1;
-DROP DATABASE d1;
-DROP DATABASE d2;

mysql-test/std_data/bug20683959loaddata.txt

-Ã"RT @niouzechun: 遘√繝上ャ繝斐繧ｨ繝ｳ繝牙耳縺ｪ繧薙□縺代ｌ縺ｩ縲√い繝ｳ繝上ャ繝斐繧ｨ繝ｳ繝峨ｄ諠ｨ蜉噪縺ｪ縺願ｩｱ繧偵≠縺ｾ繧顔ｩ肴･ｵ逧↓鞫ょ叙縺励↑縺炊逕ｱ縺ｯ縲∫樟螳溘莠ｺ逕溘蝓ｺ譛ｬ逧↓縺∪縺上＞縺九↑縺＠荳榊ｹｳ遲峨□縺礼炊荳榊ｰｽ縺縺苓ｾ帙＞

mysql-test/t/loaddata.test

@@ -610,7 +610,7 @@ disconnect con1;
 --echo #
 
 CREATE TABLE t1(f1 INT);
-EVAL SELECT 0xE1C330 INTO OUTFILE 't1.dat';
+EVAL SELECT 0xE1BB30 INTO OUTFILE 't1.dat';
 --disable_warnings
 LOAD DATA INFILE 't1.dat' IGNORE INTO TABLE t1 CHARACTER SET utf8;
 --enable_warnings
@@ -656,26 +656,3 @@ SET @@sql_mode= @old_mode;
 --remove_file $MYSQLTEST_VARDIR/mysql
 DROP TABLE t1;
 
---echo
---echo #
---echo #  Bug#23080148 - Backport of Bug#20683959.
---echo #  Bug#20683959 LOAD DATA INFILE IGNORES A SPECIFIC ROW SILENTLY
---echo #               UNDER DB CHARSET IS UTF8.
---echo #
-
-CREATE DATABASE d1 CHARSET latin1;
-USE d1;
-CREATE TABLE t1 (val TEXT);
-LOAD DATA INFILE '../../std_data/bug20683959loaddata.txt' INTO TABLE t1;
-SELECT COUNT(*) FROM t1;
-SELECT HEX(val) FROM t1;
-
-CREATE DATABASE d2 CHARSET utf8;
-USE d2;
-CREATE TABLE t1 (val TEXT);
---error ER_INVALID_CHARACTER_STRING
-LOAD DATA INFILE '../../std_data/bug20683959loaddata.txt' INTO TABLE t1;
-
-DROP TABLE d1.t1, d2.t1;
-DROP DATABASE d1;
-DROP DATABASE d2;

sql/sql_load.cc

@@ -1363,8 +1363,8 @@ READ_INFO::READ_INFO(File file_par, uint tot_length, CHARSET_INFO *cs,
   set_if_bigger(length,line_start.length());
   stack=stack_pos=(int*) sql_alloc(sizeof(int)*length);
 
-  if (!(buffer=(uchar*) my_malloc(buff_length+1,MYF(MY_WME))))
-    error= true; /* purecov: inspected */
+  if (!(buffer=(uchar*) my_malloc(buff_length+1,MYF(0))))
+    error=1; /* purecov: inspected */
   else
   {
     end_of_buff=buffer+buff_length;
@@ -1556,50 +1556,37 @@ int READ_INFO::read_field()
 	}
       }
 #ifdef USE_MB
-        uint ml= my_mbcharlen(read_charset, chr);
-        if (ml == 0)
-        {
-          *to= '\0';
-          my_error(ER_INVALID_CHARACTER_STRING, MYF(0),
-                   read_charset->csname, buffer);
-          error= true;
-          return 1;
-        }
+      if (my_mbcharlen(read_charset, chr) > 1 &&
+          to + my_mbcharlen(read_charset, chr) <= end_of_buff)
+      {
+        uchar* p= to;
+        int ml, i;
+        *to++ = chr;
 
-        if (ml > 1 &&
-            to + ml <= end_of_buff)
-        {
-          uchar* p= to;
-          *to++ = chr;
+        ml= my_mbcharlen(read_charset, chr);
 
-          for (uint i= 1; i < ml; i++)
+        for (i= 1; i < ml; i++) 
+        {
+          chr= GET;
+          if (chr == my_b_EOF)
           {
-            chr= GET;
-            if (chr == my_b_EOF)
-            {
-              /*
-                Need to back up the bytes already ready from illformed
-                multi-byte char 
-              */
-              to-= i;
-              goto found_eof;
-            }
-            *to++ = chr;
+            /*
+             Need to back up the bytes already ready from illformed
+             multi-byte char 
+            */
+            to-= i;
+            goto found_eof;
           }
-          if (my_ismbchar(read_charset,
+          *to++ = chr;
+        }
+        if (my_ismbchar(read_charset,
                         (const char *)p,
                         (const char *)to))
-            continue;
-          for (uint i= 0; i < ml; i++)
-            PUSH(*--to);
-          chr= GET;
-        }
-        else if (ml > 1)
-        {
-          // Buffer is too small, exit while loop, and reallocate.
-          PUSH(chr);
-          break;
-        }
+          continue;
+        for (i= 0; i < ml; i++)
+          PUSH(*--to);
+        chr= GET;
+      }
 #endif
       *to++ = (uchar) chr;
     }
@@ -1843,15 +1830,7 @@ int READ_INFO::read_value(int delim, String *val)
   for (chr= GET; my_tospace(chr) != delim && chr != my_b_EOF;)
   {
 #ifdef USE_MB
-    uint ml= my_mbcharlen(read_charset, chr);
-    if (ml == 0)
-    {
-      chr= my_b_EOF;
-      val->length(0);
-      return chr;
-    }
-
-    if (ml > 1)
+    if (my_mbcharlen(read_charset, chr) > 1)
     {
       DBUG_PRINT("read_xml",("multi byte"));
       int i, ml= my_mbcharlen(read_charset, chr);