bk commit into 5.1 tree (knielsen:1.2211) BUG#20549

[knielsen]

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ChangeSet
  1.2211 06/06/20 23:17:38 knielsen@stripped +1 -0
  BUG#20549: Fix missing memory initialization.
  
  Some values were not initialized:
  
   - NDB binlog thread thd->variables.pseudo_thread_id.
   - Table null bytes.
   - Field bytes for columns with NULL values.

  sql/ha_ndbcluster_binlog.cc
    1.66 06/06/20 23:17:30 knielsen@stripped +10 -1
    BUG#20549: Fix missing memory initialization.

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	knielsen
# Host:	rt.int.sifira.dk
# Root:	/usr/local/mysql/mysql-5.1tmp

--- 1.65/sql/ha_ndbcluster_binlog.cc	2006-06-14 01:20:29 +02:00
+++ 1.66/sql/ha_ndbcluster_binlog.cc	2006-06-20 23:17:30 +02:00
@@ -313,6 +313,9 @@
     // allocate memory on ndb share so it can be reused after online alter table
     share->record[0]= (byte*) alloc_root(&share->mem_root, table->s->rec_buff_length);
     share->record[1]= (byte*) alloc_root(&share->mem_root, table->s->rec_buff_length);
+    // Initialize to default values.
+    memcpy(share->record[0], table->s->default_values, table->s->reclength);
+    memcpy(share->record[1], table->s->default_values, table->s->reclength);
   }
   {
     my_ptrdiff_t row_offset= share->record[0] - table->record[0];
@@ -3275,6 +3278,13 @@
   thd= new THD; /* note that contructor of THD uses DBUG_ */
   THD_CHECK_SENTRY(thd);
 
+  /* We need to set thd->thread_id before thd->store_globals, or it will
+     set an invalid value for thd->variables.pseudo_thread_id.
+  */
+  pthread_mutex_lock(&LOCK_thread_count);
+  thd->thread_id= thread_id++;
+  pthread_mutex_unlock(&LOCK_thread_count);
+
   thd->thread_stack= (char*) &thd; /* remember where our stack is */
   if (thd->store_globals())
   {
@@ -3307,7 +3317,6 @@
   pthread_detach_this_thread();
   thd->real_id= pthread_self();
   pthread_mutex_lock(&LOCK_thread_count);
-  thd->thread_id= thread_id++;
   threads.append(thd);
   pthread_mutex_unlock(&LOCK_thread_count);
   thd->lex->start_transaction_opt= 0;