merged

configure.in

@@ -118,7 +118,7 @@ AC_SUBST(SAVE_LDFLAGS)
 AC_SUBST(SAVE_CXXLDFLAGS)
 AC_SUBST(CXXLDFLAGS)
 
-AC_PREREQ(2.57)dnl		Minimum Autoconf version required.
+AC_PREREQ(2.52)dnl		Minimum Autoconf version required.
 
 #AC_ARG_PROGRAM			# Automaticly invoked by AM_INIT_AUTOMAKE
 AM_SANITY_CHECK

mysql-test/r/rpl_drop_db.result

@@ -4,29 +4,29 @@ reset master;
 reset slave;
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
 start slave;
-drop database if exists mysqltest;
-create database mysqltest;
-create table mysqltest.t1 (n int);
-insert into mysqltest.t1 values (1);
-select * from mysqltest.t1 into outfile 'mysqltest/f1.txt';
-create table mysqltest.t2 (n int);
-create table mysqltest.t3 (n int);
-drop database mysqltest;
-ERROR HY000: Error dropping database (can't rmdir './mysqltest/', errno: 17)
-use mysqltest;
+drop database if exists mysqltest1;
+create database mysqltest1;
+create table mysqltest1.t1 (n int);
+insert into mysqltest1.t1 values (1);
+select * from mysqltest1.t1 into outfile 'mysqltest1/f1.txt';
+create table mysqltest1.t2 (n int);
+create table mysqltest1.t3 (n int);
+drop database mysqltest1;
+ERROR HY000: Error dropping database (can't rmdir './mysqltest1/', errno: 17)
+use mysqltest1;
 show tables;
-Tables_in_mysqltest
-drop database mysqltest;
-ERROR HY000: Error dropping database (can't rmdir './mysqltest/', errno: 17)
-use mysqltest;
+Tables_in_mysqltest1
+drop database mysqltest1;
+ERROR HY000: Error dropping database (can't rmdir './mysqltest1/', errno: 17)
+use mysqltest1;
 show tables;
-Tables_in_mysqltest
+Tables_in_mysqltest1
 use test;
 create table t1 (n int);
 insert into t1 values (1234);
-use mysqltest;
+use mysqltest1;
 show tables;
-Tables_in_mysqltest
+Tables_in_mysqltest1
 use test;
 select * from t1;
 n

mysql-test/t/rpl_drop_db.test

@@ -5,32 +5,33 @@
 connection master;
 
 --disable_warnings
-drop database if exists mysqltest;
+drop database if exists mysqltest1;
 --enable_warnings
-create database mysqltest;
-create table mysqltest.t1 (n int);
-insert into mysqltest.t1 values (1);
-select * from mysqltest.t1 into outfile 'mysqltest/f1.txt';
-create table mysqltest.t2 (n int);
-create table mysqltest.t3 (n int);
+create database mysqltest1;
+create table mysqltest1.t1 (n int);
+insert into mysqltest1.t1 values (1);
+select * from mysqltest1.t1 into outfile 'mysqltest1/f1.txt';
+create table mysqltest1.t2 (n int);
+create table mysqltest1.t3 (n int);
 --error 1010
-drop database mysqltest;
-use mysqltest;
+drop database mysqltest1;
+use mysqltest1;
 show tables;
 
 # test the branch of the code that deals with the query buffer overflow
 
-disable_query_log;
-let $1=50;
+--disable_query_log
+let $1=1000;
 while ($1)
 {
-  eval create table mysqltest.mysql_test_long_table_name$1 (n int);
+  eval create table mysqltest1.t$1(n int);
   dec $1;
 }
-enable_query_log;
+--enable_query_log
+
 --error 1010
-drop database mysqltest;
-use mysqltest;
+drop database mysqltest1;
+use mysqltest1;
 show tables;
 use test;
 create table t1 (n int);
@@ -38,7 +39,7 @@ insert into t1 values (1234);
 sync_slave_with_master;
 
 connection slave;
-use mysqltest;
+use mysqltest1;
 show tables;
 use test;
 select * from t1;
@@ -50,7 +51,5 @@ sync_slave_with_master;
 #cleanup
 connection slave;
 stop slave;
-system rm -rf var/master-data/mysqltest;
-
-# End of 4.1 tests
+system rm -rf var/master-data/mysqltest1;
 

mysys/my_alloc.c

@@ -203,7 +203,7 @@ gptr alloc_root(MEM_ROOT *mem_root,unsigned int Size)
     next->left= get_size-ALIGN_SIZE(sizeof(USED_MEM));
     *prev=next;
   }
-    
+
   point= (gptr) ((char*) next+ (next->size-next->left));
   /*TODO: next part may be unneded due to mem_root->first_block_usage counter*/
   if ((next->left-= Size) < mem_root->min_malloc)
@@ -217,6 +217,12 @@ gptr alloc_root(MEM_ROOT *mem_root,unsigned int Size)
 #endif
 }
 
+#ifdef SAFEMALLOC
+#define TRASH(X) bfill(((char*)(X) + ((X)->size-(X)->left)), (X)->left, 0xa5)
+#else
+#define TRASH /* no-op */
+#endif
+
 /* Mark all data in blocks free for reusage */
 
 static inline void mark_blocks_free(MEM_ROOT* root)
@@ -227,14 +233,20 @@ static inline void mark_blocks_free(MEM_ROOT* root)
   /* iterate through (partially) free blocks, mark them free */
   last= &root->free;
   for (next= root->free; next; next= *(last= &next->next))
+  {
     next->left= next->size - ALIGN_SIZE(sizeof(USED_MEM));
+    TRASH(next);
+  }
 
   /* Combine the free and the used list */
   *last= next=root->used;
 
   /* now go through the used blocks and mark them free */
   for (; next; next= next->next)
+  {
     next->left= next->size - ALIGN_SIZE(sizeof(USED_MEM));
+    TRASH(next);
+  }
 
   /* Now everything is set; Indicate that nothing is used anymore */
   root->used= 0;
@@ -280,6 +292,7 @@ void free_root(MEM_ROOT *root, myf MyFlags)
   {
     root->free=root->pre_alloc;
     root->free->left=root->pre_alloc->size-ALIGN_SIZE(sizeof(USED_MEM));
+    TRASH(root->pre_alloc);
     root->free->next=0;
   }
   root->block_num= 4;

sql/sql_db.cc

@@ -701,30 +701,28 @@ int mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent)
 
     if (!(query= thd->alloc(MAX_DROP_TABLE_Q_LEN)))
       goto exit; /* not much else we can do */
-    query_pos= query_data_start= strmov(query,"drop table ");  
+    query_pos= query_data_start= strmov(query,"drop table ");
     query_end= query + MAX_DROP_TABLE_Q_LEN;
     db_len= strlen(db);
-     
+
     for (tbl= dropped_tables; tbl; tbl= tbl->next)
     {
       uint tbl_name_len;
-      if (!tbl->was_dropped)
-        continue;
-         
-      /* 3 for the quotes and the comma*/  
-      tbl_name_len= strlen(tbl->real_name) + 3; 
+
+      /* 3 for the quotes and the comma*/
+      tbl_name_len= strlen(tbl->real_name) + 3;
       if (query_pos + tbl_name_len + 1 >= query_end)
       {
         write_to_binlog(thd, query, query_pos -1 - query, db, db_len);
         query_pos= query_data_start;
-      }    
-       
+      }
+
       *query_pos++ = '`';
       query_pos= strmov(query_pos,tbl->real_name);
       *query_pos++ = '`';
       *query_pos++ = ',';
     }
-     
+
     if (query_pos != query_data_start)
     {
       write_to_binlog(thd, query, query_pos -1 - query, db, db_len);

sql/sql_table.cc

@@ -220,7 +220,6 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
   for (table=tables ; table ; table=table->next)
   {
     char *db=table->db;
-    table->was_dropped= 0;
     mysql_ha_flush(thd, table, MYSQL_HA_CLOSE_FINAL);
     if (!close_temporary_table(thd, db, table->real_name))
     {
@@ -281,8 +280,6 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
 	wrong_tables.append(',');
       wrong_tables.append(String(table->real_name,system_charset_info));
     }
-    else
-      table->was_dropped= 1;
   }
   thd->tmp_table_used= tmp_table_deleted;
   error= 0;

sql/table.h

@@ -235,9 +235,6 @@ typedef struct st_table_list
   bool		cacheable_table;	/* stop PS caching */
   /* used in multi-upd privelege check */
   bool		table_in_update_from_clause;
-  
-  /* used for proper partially successful DROP DATABASE binlogging */
-  bool    was_dropped; 
 } TABLE_LIST;
 
 typedef struct st_changed_table_list