Merge mysql.com:/home/ram/work/mysql-5.1-maint

into  mysql.com:/home/ram/work/b19328/b19328.5.1

include/mysql/plugin.h

@@ -655,7 +655,8 @@ void **thd_ha_data(const MYSQL_THD thd, const struct handlerton *hton);
 int thd_tx_isolation(const MYSQL_THD thd);
 char *thd_security_context(MYSQL_THD thd, char *buffer, unsigned int length,
                            unsigned int max_query_len);
-
+/* Increments the row counter, see THD::row_count */
+void thd_inc_row_count(MYSQL_THD thd);
 
 #ifdef __cplusplus
 }

mysql-test/extra/binlog_tests/binlog.test

@@ -5,7 +5,6 @@
 -- source include/have_log_bin.inc
 -- source include/not_embedded.inc
 -- source include/have_innodb.inc
--- source include/have_log_bin.inc
 -- source include/have_debug.inc
 
 --disable_warnings
@@ -139,6 +138,37 @@ show binlog events from 0;
 
 set session autocommit = @ac;
 
+# now show that nothing breaks if we need to read from the cache more
+# than once, resulting in split event-headers
+
+set @bcs = @@binlog_cache_size;
+set @ac = @@autocommit;
+
+set global binlog_cache_size=4096;
+set autocommit= 0;
+reset master;
+
+create table t1 (a int) engine=innodb;
+
+let $1=400;
+disable_query_log;
+begin;
+while ($1)
+{
+ eval insert into t1 values( $1 );
+ dec $1;
+}
+commit;
+enable_query_log;
+
+--replace_regex /\/\* xid=.* \*\//\/* XID *\// /table_id: [0-9]+/table_id: #/ /Server ver: [^,]*,/Server version,/
+show binlog events from 0;
+
+drop table t1;
+
+set global binlog_cache_size=@bcs;
+set session autocommit = @ac;
+
 --echo End of 5.0 tests
 
 # Test of a too big SET INSERT_ID: see if the truncated value goes

mysql-test/r/csv.result

@@ -5276,7 +5276,7 @@ drop table t1;
 create table t1(a int, b int) engine=csv;
 repair table t1;
 Table	Op	Msg_type	Msg_text
-test.t1	repair	Warning	Data truncated for column 'a' at row 1
+test.t1	repair	Warning	Data truncated for column 'a' at row 5
 test.t1	repair	status	OK
 check table t1;
 Table	Op	Msg_type	Msg_text

mysql-test/suite/rpl/r/rpl_misc_functions.result

@@ -48,7 +48,7 @@ where ABS(t1.col_a - t1_slave.col_a) < 0.0001 ;
 SELECT @aux;
 @aux
 12
+DROP TABLE t1, t1_slave;
 DROP PROCEDURE test_replication_sp1;
 DROP PROCEDURE test_replication_sp2;
 DROP FUNCTION test_replication_sf;
-DROP TABLE t1, t1_slave;

mysql-test/suite/rpl/t/rpl_misc_functions.test

@@ -104,10 +104,10 @@ if (`SELECT @aux <> 12 OR @aux IS NULL`)
 
 # Cleanup
 connection master;
+DROP TABLE t1, t1_slave;
 DROP PROCEDURE test_replication_sp1;
 DROP PROCEDURE test_replication_sp2;
 DROP FUNCTION test_replication_sf;
-DROP TABLE t1, t1_slave;
 --sync_slave_with_master
 
 

mysql-test/t/status.test

@@ -26,7 +26,7 @@ connection con1;
 --send
 update t1 set n = 3;
 connection con2;
-sleep 0.5;
+sleep 1;
 unlock tables;
 connection con1;
 reap;

mysql-test/t/windows_shm.test

@@ -4,6 +4,6 @@
 #
 # Bug #24924: shared-memory-base-name that is too long causes buffer overflow
 #
---exec $MYSQLADMIN --no-defaults --shared-memory-base-name=HeyMrBaseNameXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ping
+--exec $MYSQLADMIN --no-defaults --user=root --host=127.0.0.1 --port=$MASTER_MYPORT --shared-memory-base-name=HeyMrBaseNameXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ping
 
 --echo End of 5.0 tests.

sql/field.cc

@@ -1360,6 +1360,18 @@ bool Field::send_binary(Protocol *protocol)
 }
 
 
+int Field::store(const char *to, uint length, CHARSET_INFO *cs,
+                 enum_check_fields check_level)
+{
+  int res;
+  enum_check_fields old_check_level= table->in_use->count_cuted_fields;
+  table->in_use->count_cuted_fields= check_level;
+  res= store(to, length, cs);
+  table->in_use->count_cuted_fields= old_check_level;
+  return res;
+}
+
+
 my_decimal *Field::val_decimal(my_decimal *decimal)
 {
   /* This never have to be called */

sql/field.h

@@ -100,6 +100,8 @@ class Field
   virtual int  store(longlong nr, bool unsigned_val)=0;
   virtual int  store_decimal(const my_decimal *d)=0;
   virtual int store_time(MYSQL_TIME *ltime, timestamp_type t_type);
+  int store(const char *to, uint length, CHARSET_INFO *cs,
+            enum_check_fields check_level);
   virtual double val_real(void)=0;
   virtual longlong val_int(void)=0;
   virtual my_decimal *val_decimal(my_decimal *);

sql/log.cc

@@ -3995,30 +3995,24 @@ int MYSQL_BIN_LOG::write_cache(IO_CACHE *cache, bool lock_log, bool sync_log)
       memcpy((char *)cache->read_pos, &header[carry], LOG_EVENT_HEADER_LEN - carry);
 
       /* next event header at ... */
-      hdr_offs = LOG_EVENT_HEADER_LEN - carry +
-        uint4korr(&header[EVENT_LEN_OFFSET]);
+      hdr_offs = uint4korr(&header[EVENT_LEN_OFFSET]) - carry;
 
       carry= 0;
     }
 
     /* if there is anything to write, process it. */
 
-    if(likely(bytes > 0))
+    if (likely(bytes > 0))
     {
       /*
-        next header beyond current read-buffer? we'll get it later
-        (though not necessarily in the very next iteration).
+        process all event-headers in this (partial) cache.
+        if next header is beyond current read-buffer,
+        we'll get it later (though not necessarily in the
+        very next iteration, just "eventually").
       */
 
-      if (hdr_offs >= bytes)
-        hdr_offs -= bytes;
-      else
+      while (hdr_offs < bytes)
       {
-
-        /* process all event-headers in this (partial) cache. */
-
-        do {
-
         /*
           partial header only? save what we can get, process once
           we get the rest.
@@ -4045,8 +4039,17 @@ int MYSQL_BIN_LOG::write_cache(IO_CACHE *cache, bool lock_log, bool sync_log)
           hdr_offs += uint4korr(log_pos);
 
         }
-        } while (hdr_offs < bytes);
       }
+
+      /*
+        Adjust hdr_offs. Note that this doesn't mean it will necessarily
+        be valid in the next iteration; if the current event is very long,
+        it may take a couple of read-iterations (and subsequent fixings
+        of hdr_offs) for it to become valid again.
+        if we had a split header, hdr_offs was already fixed above.
+      */
+      if (carry == 0)
+        hdr_offs -= bytes;
     }
 
     /* Write data to the binary log file */

sql/mysql_priv.h

@@ -494,6 +494,13 @@ enum enum_parsing_place
 struct st_table;
 class THD;
 
+enum enum_check_fields
+{
+  CHECK_FIELD_IGNORE,
+  CHECK_FIELD_WARN,
+  CHECK_FIELD_ERROR_FOR_NULL
+};
+                                  
 /* Struct to handle simple linked lists */
 
 typedef struct st_sql_list {

sql/sql_class.cc

@@ -253,6 +253,11 @@ int thd_tx_isolation(const THD *thd)
   return (int) thd->variables.tx_isolation;
 }
 
+extern "C"
+void thd_inc_row_count(THD *thd)
+{
+  thd->row_count++;
+}
 
 /*
   Dumps a text description of a thread, its security context

sql/sql_class.h

@@ -39,8 +39,6 @@ enum enum_ha_read_modes { RFIRST, RNEXT, RPREV, RLAST, RKEY, RNEXT_SAME };
 enum enum_duplicates { DUP_ERROR, DUP_REPLACE, DUP_UPDATE };
 enum enum_delay_key_write { DELAY_KEY_WRITE_NONE, DELAY_KEY_WRITE_ON,
 			    DELAY_KEY_WRITE_ALL };
-enum enum_check_fields
-{ CHECK_FIELD_IGNORE, CHECK_FIELD_WARN, CHECK_FIELD_ERROR_FOR_NULL };
 enum enum_mark_columns
 { MARK_COLUMNS_NONE, MARK_COLUMNS_READ, MARK_COLUMNS_WRITE};
 

storage/csv/ha_tina.cc

@@ -45,8 +45,6 @@
 #pragma implementation        // gcc: Class implementation
 #endif
 
-#define MYSQL_SERVER 1
-
 #include "mysql_priv.h"
 #include <mysql/plugin.h>
 #include "ha_tina.h"
@@ -675,7 +673,8 @@ int ha_tina::find_current_row(uchar *buf)
 
     if (bitmap_is_set(table->read_set, (*field)->field_index))
     {
-      if ((*field)->store(buffer.ptr(), buffer.length(), buffer.charset()))
+      if ((*field)->store(buffer.ptr(), buffer.length(), buffer.charset(),
+                          CHECK_FIELD_WARN))
         goto err;
     }
   }
@@ -1002,7 +1001,6 @@ int ha_tina::delete_row(const uchar * buf)
 
 int ha_tina::rnd_init(bool scan)
 {
-  THD *thd= table ? table->in_use : current_thd;
   DBUG_ENTER("ha_tina::rnd_init");
 
   /* set buffer to the beginning of the file */
@@ -1014,7 +1012,6 @@ int ha_tina::rnd_init(bool scan)
   stats.records= 0;
   records_is_known= 0;
   chain_ptr= chain;
-  thd->count_cuted_fields= CHECK_FIELD_WARN;    // To find wrong values
 
   DBUG_RETURN(0);
 }
@@ -1298,9 +1295,9 @@ int ha_tina::repair(THD* thd, HA_CHECK_OPT* check_opt)
   current_position= next_position= 0;
 
   /* Read the file row-by-row. If everything is ok, repair is not needed. */
-  thd->count_cuted_fields= CHECK_FIELD_WARN;    // To find wrong values
   while (!(rc= find_current_row(buf)))
   {
+    thd_inc_row_count(thd);
     rows_repaired++;
     current_position= next_position;
   }
@@ -1464,9 +1461,9 @@ int ha_tina::check(THD* thd, HA_CHECK_OPT* check_opt)
   /* set current position to the beginning of the file */
   current_position= next_position= 0;
   /* Read the file row-by-row. If everything is ok, repair is not needed. */
-  thd->count_cuted_fields= CHECK_FIELD_WARN;    // To find wrong values
   while (!(rc= find_current_row(buf)))
   {
+    thd_inc_row_count(thd);
     count--;
     current_position= next_position;
   }