Bug fix: we should set have_rtree value in case of table reopen.

Code cleanup.

myisam/mi_open.c

@@ -484,6 +484,7 @@ MI_INFO *mi_open(const char *name, int mode, uint open_flags)
     if (mi_open_datafile(&info, share, old_info->dfile))
       goto err;
     errpos=5;
+    have_rtree= old_info->rtree_recursion_state != NULL;
   }
 
   /* alloc and set up private structure parts */
@@ -492,12 +493,15 @@ MI_INFO *mi_open(const char *name, int mode, uint open_flags)
 		       &info.blobs,sizeof(MI_BLOB)*share->base.blobs,
 		       &info.buff,(share->base.max_key_block_length*2+
 				   share->base.max_key_length),
-		       &info.rtree_recursion_state,have_rtree ? 1024 : 0,
 		       &info.lastkey,share->base.max_key_length*3+1,
 		       &info.filename,strlen(org_name)+1,
+		       &info.rtree_recursion_state,have_rtree ? 1024 : 0,
 		       NullS))
     goto err;
   errpos=6;
+  
+  if (!have_rtree) 
+    info.rtree_recursion_state= NULL;
 
   strmov(info.filename,org_name);
   memcpy(info.blobs,share->blobs,sizeof(MI_BLOB)*share->base.blobs);

myisam/myisamdef.h

@@ -272,7 +272,7 @@ struct st_myisam_info {
 #ifdef THREAD
   THR_LOCK_DATA lock;
 #endif
-  uchar * rtree_recursion_state;	/* For RTREE */
+  uchar  *rtree_recursion_state;	/* For RTREE */
   int     rtree_recursion_depth;
 };
 

myisam/rt_index.c

@@ -53,7 +53,7 @@ static int rtree_find_req(MI_INFO *info, MI_KEYDEF *keyinfo, uint search_flag, u
   int res;
   uchar *page_buf;
   int k_len;
-  int *saved_key = (int*)(info->rtree_recursion_state + level * sizeof(int));
+  uint *saved_key = (uint*) (info->rtree_recursion_state) + level;
   
   if (!(page_buf = (uchar*)my_alloca((uint)keyinfo->block_length)))
   {
@@ -114,7 +114,7 @@ static int rtree_find_req(MI_INFO *info, MI_KEYDEF *keyinfo, uint search_flag, u
         uchar *after_key = rt_PAGE_NEXT_KEY(k, k_len, nod_flag);
         info->lastpos = _mi_dpos(info, 0, after_key);
         info->lastkey_length = k_len + info->s->base.rec_reflength;
-        memcpy(info->lastkey, k, k_len + info->s->base.rec_reflength);
+        memcpy(info->lastkey, k, info->lastkey_length);
 
         info->rtree_recursion_depth = level;
         *saved_key = k - page_buf;
@@ -205,7 +205,7 @@ int rtree_find_next(MI_INFO *info, uint keynr, uint search_flag)
 
         info->lastpos = _mi_dpos(info, 0, after_key);
         info->lastkey_length = k_len + info->s->base.rec_reflength;
-        memcpy(info->lastkey, key, k_len + info->s->base.rec_reflength);
+        memcpy(info->lastkey, key, info->lastkey_length);
 
         *(int*)info->int_keypos = key - info->buff;
         if (after_key >= info->int_maxpos)
@@ -246,7 +246,7 @@ static int rtree_get_req(MI_INFO *info, MI_KEYDEF *keyinfo, uint key_length,
   int res;
   uchar *page_buf;
   uint k_len;
-  int *saved_key = (int*)(info->rtree_recursion_state + level*sizeof(int));
+  uint *saved_key = (uint*) (info->rtree_recursion_state) + level;
   
   if (!(page_buf = (uchar*)my_alloca((uint)keyinfo->block_length)))
     return -1;
@@ -297,7 +297,7 @@ static int rtree_get_req(MI_INFO *info, MI_KEYDEF *keyinfo, uint key_length,
       uchar *after_key = rt_PAGE_NEXT_KEY(k, k_len, nod_flag);
       info->lastpos = _mi_dpos(info, 0, after_key);
       info->lastkey_length = k_len + info->s->base.rec_reflength;
-      memcpy(info->lastkey, k, k_len + info->s->base.rec_reflength);
+      memcpy(info->lastkey, k, info->lastkey_length);
 
       info->rtree_recursion_depth = level;
       *saved_key = k - page_buf;