Added casts to avoid compiler warnings and fixed a wrong type.

mysys/array.c:
  Added casts to avoid compiler warnings.
mysys/hash.c:
  Added casts to avoid compiler warnings.
sql/sql_plugin.cc:
  Fixed wrong type.

mysys/array.c

@@ -63,7 +63,7 @@ my_bool init_dynamic_array2(DYNAMIC_ARRAY *array, uint element_size,
   array->size_of_element=element_size;
   if ((array->buffer= init_buffer))
     DBUG_RETURN(FALSE);
-  if (!(array->buffer=(char*) my_malloc_ci(element_size*init_alloc,MYF(MY_WME))))
+  if (!(array->buffer=(uchar*) my_malloc_ci(element_size*init_alloc,MYF(MY_WME))))
   {
     array->max_element=0;
     DBUG_RETURN(TRUE);
@@ -132,7 +132,7 @@ uchar *alloc_dynamic(DYNAMIC_ARRAY *array)
   if (array->elements == array->max_element)
   {
     char *new_ptr;
-    if (array->buffer == (char *)(array + 1))
+    if (array->buffer == (uchar *)(array + 1))
     {
       /*
         In this senerio, the buffer is statically preallocated,
@@ -152,7 +152,7 @@ uchar *alloc_dynamic(DYNAMIC_ARRAY *array)
                                      array->size_of_element,
                                      MYF(MY_WME | MY_ALLOW_ZERO_PTR))))
       return 0;
-    array->buffer=new_ptr;
+    array->buffer= (uchar*) new_ptr;
     array->max_element+=array->alloc_increment;
   }
   return array->buffer+(array->elements++ * array->size_of_element);
@@ -206,7 +206,7 @@ my_bool set_dynamic(DYNAMIC_ARRAY *array, uchar* element, uint idx)
       char *new_ptr;
       size=(idx+array->alloc_increment)/array->alloc_increment;
       size*= array->alloc_increment;
-      if (array->buffer == (char *)(array + 1))
+      if (array->buffer == (uchar *)(array + 1))
       {
         /*
           In this senerio, the buffer is statically preallocated,
@@ -224,7 +224,7 @@ my_bool set_dynamic(DYNAMIC_ARRAY *array, uchar* element, uint idx)
                                        array->size_of_element,
                                        MYF(MY_WME | MY_ALLOW_ZERO_PTR))))
 	return TRUE;
-      array->buffer=new_ptr;
+      array->buffer= (uchar*) new_ptr;
       array->max_element=size;
     }
     bzero((uchar*) (array->buffer+array->elements*array->size_of_element),
@@ -273,7 +273,7 @@ void delete_dynamic(DYNAMIC_ARRAY *array)
   /*
     Just mark as empty if we are using a static buffer
   */
-  if (array->buffer == (char *)(array + 1))
+  if (array->buffer == (uchar *)(array + 1))
     array->elements= 0;
   else
   if (array->buffer)
@@ -295,7 +295,7 @@ void delete_dynamic(DYNAMIC_ARRAY *array)
 
 void delete_dynamic_element(DYNAMIC_ARRAY *array, uint idx)
 {
-  char *ptr=array->buffer+array->size_of_element*idx;
+  char *ptr= (char*) array->buffer+array->size_of_element*idx;
   array->elements--;
   memmove(ptr,ptr+array->size_of_element,
           (array->elements-idx)*array->size_of_element);
@@ -318,12 +318,12 @@ void freeze_size(DYNAMIC_ARRAY *array)
   /*
     Do nothing if we are using a static buffer
   */
-  if (array->buffer == (char *)(array + 1))
+  if (array->buffer == (uchar *)(array + 1))
     return;
     
   if (array->buffer && array->max_element != elements)
   {
-    array->buffer=(char*) my_realloc(array->buffer,
+    array->buffer=(uchar*) my_realloc(array->buffer,
                                      elements*array->size_of_element,
                                      MYF(MY_WME));
     array->max_element=elements;

mysys/hash.c

@@ -308,7 +308,8 @@ static int hashcmp(const HASH *hash, HASH_LINK *pos, const uchar *key,
 my_bool my_hash_insert(HASH *info,const uchar *record)
 {
   int flag;
-  uint halfbuff,hash_nr,first_index,idx;
+  size_t idx;
+  uint halfbuff,hash_nr,first_index;
   uchar *ptr_to_rec,*ptr_to_rec2;
   HASH_LINK *data,*empty,*gpos,*gpos2,*pos;
 
@@ -535,7 +536,8 @@ exit:
 my_bool hash_update(HASH *hash, uchar *record, uchar *old_key,
                     size_t old_key_length)
 {
-  uint idx,new_index,new_pos_index,blength,records,empty;
+  uint new_index,new_pos_index,blength,records,empty;
+  size_t idx;
   HASH_LINK org_link,*data,*previous,*pos;
   DBUG_ENTER("hash_update");
   
@@ -546,7 +548,7 @@ my_bool hash_update(HASH *hash, uchar *record, uchar *old_key,
     if ((found= hash_first(hash, new_key, idx, &state)))
       do 
       {
-        if (found != record)
+        if (found != (char*) record)
           DBUG_RETURN(1);		/* Duplicate entry */
       } 
       while ((found= hash_next(hash, new_key, idx, &state)));

sql/sql_plugin.cc

@@ -1056,7 +1056,7 @@ static uchar *get_hash_key(const uchar *buff, size_t *length,
 }
 
 
-static uchar *get_bookmark_hash_key(const uchar *buff, uint *length,
+static uchar *get_bookmark_hash_key(const uchar *buff, size_t *length,
                    my_bool not_used __attribute__((unused)))
 {
   struct st_bookmark *var= (st_bookmark *)buff;