Portability fixes

Fixed problems with group_concat() and HAVING
Updated crash-me values

include/my_global.h

@@ -1120,10 +1120,10 @@ typedef union {
 			  *((T)+1)=(((A) >> 16));\
 			  *((T)+0)=(((A) >> 24)); }
 
-#define doubleget(V,M)	 memcpy((byte*) &V,(byte*) (M),sizeof(double))
-#define doublestore(T,V) memcpy((byte*) (T),(byte*) &V,sizeof(double))
-#define longlongget(V,M) memcpy((byte*) &V,(byte*) (M),sizeof(ulonglong))
-#define longlongstore(T,V) memcpy((byte*) (T),(byte*) &V,sizeof(ulonglong))
+#define doubleget(V,M)	 memcpy_fixed((byte*) &V,(byte*) (M),sizeof(double))
+#define doublestore(T,V) memcpy_fixed((byte*) (T),(byte*) &V,sizeof(double))
+#define longlongget(V,M) memcpy_fixed((byte*) &V,(byte*) (M),sizeof(ulonglong))
+#define longlongstore(T,V) memcpy_fixed((byte*) (T),(byte*) &V,sizeof(ulonglong))
 
 #else
 

libmysqld/Makefile.am

@@ -88,9 +88,9 @@ libmysqld.a:	libmysqld_int.a $(INC_LIB)
 		cd tmp ; \
 		for file in *.a ; do \
 		  bfile=`basename $$file .a` ; \
-		  ar x $$file; \
+		  $(AR) x $$file; \
 		  for obj in *.o ; do mv $$obj $${bfile}_$$obj ; done ; \
-		  ar q ../libmysqld_int2.a *.o ; \
+		  $(AR) q ../libmysqld_int2.a *.o ; \
 		  rm -f *.o ; \
 		done
 		mv libmysqld_int2.a libmysqld.a

mysql-test/r/func_gconcat.result

@@ -59,11 +59,16 @@ grp	group_concat(d order by a desc)
 1	a
 2	b,a
 3	c,d,d,b,b,a
-select grp,group_concat(a order by a,d+c) from t1 group by grp;
-grp	group_concat(a order by a,d+c)
+select grp,group_concat(a order by a,d+c-ascii(c)-a) from t1 group by grp;
+grp	group_concat(a order by a,d+c-ascii(c)-a)
 1	1
 2	2,3
 3	4,5,6,7,8,9
+select grp,group_concat(a order by d+c-ascii(c),a) from t1 group by grp;
+grp	group_concat(a order by d+c-ascii(c),a)
+1	1
+2	3,2
+3	7,8,4,6,9,5
 select grp,group_concat(c order by 1) from t1 group by grp;
 grp	group_concat(c order by 1)
 1	a
@@ -197,9 +202,21 @@ NULL
 drop table t1;
 drop table t2;
 create table t1 (bar varchar(32));
-insert into t1 values('test'),('test2');
-select * from t1 having group_concat(bar)='';
+insert into t1 values('test1'),('test2');
+select group_concat(bar order by concat(bar,bar)) from t1;
+group_concat(bar order by concat(bar,bar))
+test1,test2
+select group_concat(bar order by concat(bar,bar) desc) from t1;
+group_concat(bar order by concat(bar,bar) desc)
+test2,test1
+select bar from t1 having group_concat(bar)='';
+bar
+select bar from t1 having instr(group_concat(bar), "test") > 0;
+bar
+test1
+select bar from t1 having instr(group_concat(bar order by concat(bar,bar) desc), "test2,test1") > 0;
 bar
+test1
 drop table t1;
 create table t1 (a int, a1 varchar(10));
 create table t2 (a0 int);
@@ -246,7 +263,7 @@ id1	concat_id
 drop table t1,t2;
 create table t1 (s1 char(10), s2 int not null);
 insert into t1 values ('a',2),('b',2),('c',1),('a',3),('b',4),('c',4);
-select distinct s1 from t1 order by s2;
+select distinct s1 from t1 order by s2,s1;
 s1
 c
 a

mysql-test/t/func_gconcat.test

@@ -29,7 +29,8 @@ select grp,group_concat(c order by c) from t1 group by grp;
 select grp,group_concat(c order by c desc) from t1 group by grp;
 select grp,group_concat(d order by a) from t1 group by grp;
 select grp,group_concat(d order by a desc) from t1 group by grp;
-select grp,group_concat(a order by a,d+c) from t1 group by grp;
+select grp,group_concat(a order by a,d+c-ascii(c)-a) from t1 group by grp;
+select grp,group_concat(a order by d+c-ascii(c),a) from t1 group by grp;
 select grp,group_concat(c order by 1) from t1 group by grp;
 select grp,group_concat(c order by "c") from t1 group by grp;
 select grp,group_concat(distinct c order by c) from t1 group by grp;
@@ -108,8 +109,12 @@ drop table t2;
 
 # check having
 create table t1 (bar varchar(32));
-insert into t1 values('test'),('test2');
-select * from t1 having group_concat(bar)='';
+insert into t1 values('test1'),('test2');
+select group_concat(bar order by concat(bar,bar)) from t1;
+select group_concat(bar order by concat(bar,bar) desc) from t1;
+select bar from t1 having group_concat(bar)='';
+select bar from t1 having instr(group_concat(bar), "test") > 0;
+select bar from t1 having instr(group_concat(bar order by concat(bar,bar) desc), "test2,test1") > 0;
 drop table t1;
 
 # ORDER BY fix_fields()
@@ -147,7 +152,7 @@ drop table t1,t2;
 
 create table t1 (s1 char(10), s2 int not null);
 insert into t1 values ('a',2),('b',2),('c',1),('a',3),('b',4),('c',4);
-select distinct s1 from t1 order by s2;
+select distinct s1 from t1 order by s2,s1;
 select group_concat(distinct s1) from t1;
 select group_concat(distinct s1 order by s2) from t1 where s2 < 4;
 # The following is wrong and needs to be fixed ASAP

sql/field.cc

@@ -2782,14 +2782,8 @@ int Field_double::cmp(const char *a_ptr, const char *b_ptr)
   else
 #endif
   {
-/* could this ALWAYS be 2 calls to doubleget() ?? */
-#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
     doubleget(a, a_ptr);
     doubleget(b, b_ptr);
-#else
-    memcpy_fixed(&a,a_ptr,sizeof(double));
-    memcpy_fixed(&b,b_ptr,sizeof(double));
-#endif
   }
   return (a < b) ? -1 : (a > b) ? 1 : 0;
 }
@@ -2809,12 +2803,7 @@ void Field_double::sort_string(char *to,uint length __attribute__((unused)))
   }
   else
 #endif
-/* could this ALWAYS be 2 calls to doubleget() ?? */
-#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
     doubleget(nr,ptr);
-#else
-    memcpy_fixed(&nr,ptr,sizeof(nr));
-#endif
   change_double_for_sort(nr, (byte*) to);
 }
 

sql/init.cc

@@ -46,7 +46,5 @@ void unireg_init(ulong options)
     log_10[i]= nr ; nr*= 10.0;
   }
   specialflag|=options;			/* Set options from argv */
-
-  thread_stack_min=thread_stack - STACK_MIN_SIZE;
   DBUG_VOID_RETURN;
 }

sql/item_sum.cc

@@ -1521,21 +1521,26 @@ String *Item_sum_udf_str::val_str(String *str)
 int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
 				       byte* key2)
 {
-  Item_func_group_concat* item= (Item_func_group_concat*)arg;
-  uint *offset= item->field_offsets+ item->field_list_offset;
+  Item_func_group_concat* grp_item= (Item_func_group_concat*)arg;
   Item **field_item, **end;
+  char *record= (char*) grp_item->table->record[0];
 
-  for (field_item= item->args, end= field_item+item->arg_count_field;
+  for (field_item= grp_item->args, end= field_item + grp_item->arg_count_field;
        field_item < end;
        field_item++)
   {
-    Field *field= (*field_item)->real_item()->get_tmp_table_field();
+    /*
+      We have to use get_tmp_table_field() instead of
+      real_item()->get_tmp_table_field() because we want the field in
+      the temporary table, not the original field
+    */
+    Field *field= (*field_item)->get_tmp_table_field();
     if (field)
     {
       int res;
-      if ((res= field->key_cmp(key1 + *offset, key2 + *offset)))
+      uint offset= (uint) (field->ptr - record);
+      if ((res= field->key_cmp(key1 + offset, key2 + offset)))
 	return res;
-      offset++;
     }
   }
   return 0;
@@ -1549,26 +1554,33 @@ int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
 
 int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2)
 {
-  Item_func_group_concat* item= (Item_func_group_concat*)arg;
-  uint *offset= item->field_offsets;
+  Item_func_group_concat* grp_item= (Item_func_group_concat*) arg;
   ORDER **order_item, **end;
+  char *record= (char*) grp_item->table->record[0];
 
-  for (order_item= item->order, end=order_item+ item->arg_count_order;
+  for (order_item= grp_item->order, end=order_item+ grp_item->arg_count_order;
        order_item < end;
        order_item++)
   {
     Item *item= *(*order_item)->item;
-    Field *field= item->real_item()->get_tmp_table_field();
+    /*
+      We have to use get_tmp_table_field() instead of
+      real_item()->get_tmp_table_field() because we want the field in
+      the temporary table, not the original field
+    */
+    Field *field= item->get_tmp_table_field();
     if (field)
     {
-      int res= field->key_cmp(key1 + *offset, key2 + *offset);
-      if (res)
+      int res;
+      uint offset= (uint) (field->ptr - record);
+      if ((res= field->key_cmp(key1 + offset, key2 + offset)))
         return (*order_item)->asc ? res : -res;
-      offset++;
     }
   }
   /*
-    We can't return 0 because tree class remove this item as double value. 
+    We can't return 0 because in that case the tree class would remove this
+    item as double value. This would cause problems for case-changes and
+    if the the returned values are not the same we do the sort on.
   */
   return 1;
 }
@@ -1601,10 +1613,10 @@ int dump_leaf_key(byte* key, uint32 count __attribute__((unused)),
                   Item_func_group_concat *item)
 {
   char buff[MAX_FIELD_WIDTH];
-  String tmp((char *)&buff,sizeof(buff),default_charset_info);
-  String tmp2((char *)&buff,sizeof(buff),default_charset_info);
-  uint *field_offsets= (item->field_offsets +
-			item->field_list_offset);
+  String tmp((char*)   &buff, sizeof(buff), default_charset_info);
+  String tmp2((char *) &buff, sizeof(buff), default_charset_info);
+  char *record= (char*) item->table->record[0];
+
   tmp.length(0);
   
   for (uint i= 0; i < item->arg_count_field; i++)
@@ -1612,12 +1624,20 @@ int dump_leaf_key(byte* key, uint32 count __attribute__((unused)),
     Item *show_item= item->args[i];
     if (!show_item->const_item())
     {
-      Field *f= show_item->real_item()->get_tmp_table_field();
-      char *sv= f->ptr;
-      f->ptr= (char *) key + *(field_offsets++);
-      String *res= f->val_str(&tmp,&tmp2);
+      /*
+	We have to use get_tmp_table_field() instead of
+	real_item()->get_tmp_table_field() because we want the field in
+	the temporary table, not the original field
+      */
+      Field *field= show_item->get_tmp_table_field();
+      String *res;
+      char *save_ptr= field->ptr;
+      uint offset= (uint) (save_ptr - record);
+      DBUG_ASSERT(offset < item->table->reclength);
+      field->ptr= (char *) key + offset;
+      res= field->val_str(&tmp,&tmp2);
       item->result.append(*res);
-      f->ptr= sv;
+      field->ptr= save_ptr;
     }
     else 
     {
@@ -1660,7 +1680,7 @@ Item_func_group_concat::Item_func_group_concat(bool is_distinct,
 					       SQL_LIST *is_order,
 					       String *is_separator)
   :Item_sum(), tmp_table_param(0), max_elements_in_tree(0), warning(0),
-   warning_available(0), key_length(0), rec_offset(0),
+   warning_available(0), key_length(0),
    tree_mode(0), distinct(is_distinct), warning_for_row(0),
    separator(is_separator), tree(&tree_base), table(0),
    order(0), tables_list(0),
@@ -1685,14 +1705,12 @@ Item_func_group_concat::Item_func_group_concat(bool is_distinct,
     args - arg_count_field+arg_count_order
            (for possible order items in temporare tables)
     order - arg_count_order
-    field_offset For offset withing the key
   */
-  if (!(args= (Item**) sql_alloc((sizeof(Item*) + sizeof(uint)) * arg_count +
+  if (!(args= (Item**) sql_alloc(sizeof(Item*) * arg_count +
 				 sizeof(ORDER*)*arg_count_order)))
     return;
 
   order= (ORDER**)(args + arg_count);
-  field_offsets= (uint*) (order+ arg_count_order);
 
   /* fill args items of show and sort */
   List_iterator_fast<Item> li(*is_select);
@@ -1723,7 +1741,6 @@ Item_func_group_concat::Item_func_group_concat(THD *thd,
   warning(item->warning),
   warning_available(item->warning_available),
   key_length(item->key_length), 
-  rec_offset(item->rec_offset), 
   tree_mode(item->tree_mode),
   distinct(item->distinct),
   warning_for_row(item->warning_for_row),
@@ -1731,7 +1748,6 @@ Item_func_group_concat::Item_func_group_concat(THD *thd,
   tree(item->tree),
   table(item->table),
   order(item->order),
-  field_offsets(item->field_offsets),
   tables_list(item->tables_list),
   group_concat_max_len(item->group_concat_max_len),
   show_elements(item->show_elements),
@@ -1817,39 +1833,36 @@ void Item_func_group_concat::clear()
 
 bool Item_func_group_concat::add()
 {
-  bool record_is_null;
-
   if (always_null)
     return 0;
   copy_fields(tmp_table_param);
   copy_funcs(tmp_table_param->items_to_copy);
 
-  record_is_null= TRUE;
   for (uint i= 0; i < arg_count_field; i++)
   {
     Item *show_item= args[i];
     if (!show_item->const_item())
     {
+      /*
+	Here we use real_item as we want the original field data that should
+	be written to table->record[0]
+      */
       Field *f= show_item->real_item()->get_tmp_table_field();
-      if (!f->is_null())
-      {
-        record_is_null= FALSE;      
-	break;
-      }
+      if (f->is_null())
+	return 0;				// Skip row if it contains null
     }
   }
-  if (record_is_null)
-    return 0;
+
   null_value= FALSE;
   if (tree_mode)
   {
-    if (!tree_insert(tree, table->record[0] + rec_offset, 0, tree->custom_arg))
+    if (!tree_insert(tree, table->record[0], 0, tree->custom_arg))
       return 1;
   }
   else
   {
     if (result.length() <= group_concat_max_len && !warning_for_row)
-      dump_leaf_key(table->record[0] + rec_offset, 1, this);
+      dump_leaf_key(table->record[0], 1, this);
   }
   return 0;
 }
@@ -1906,8 +1919,8 @@ bool Item_func_group_concat::setup(THD *thd)
 {
   List<Item> list;
   SELECT_LEX *select_lex= thd->lex->current_select;
-  Field **field, **field_end;
-  uint offset, *offsets, const_fields;
+  uint const_fields;
+  byte *record;
   qsort_cmp2 compare_key;
   DBUG_ENTER("Item_func_group_concat::setup");
 
@@ -1967,21 +1980,11 @@ bool Item_func_group_concat::setup(THD *thd)
   table->file->extra(HA_EXTRA_NO_ROWS);
   table->no_rows= 1;
 
-  field_end= (field= table->field) + table->fields;
-  offsets= field_offsets;
-  offset= 0;
-  for (key_length= 0; field < field_end; field++)
-  {
-    uint32 length= (*field)->pack_length();
-    (*offsets++)= offset;
-    offset+= length;
-    key_length += length;
-  }
+  key_length= table->reclength;
+  record= table->record[0];
 
   /* Offset to first result field in table */
   field_list_offset= table->fields - (list.elements - const_fields);
-  /* Offset to first field */
-  rec_offset= (uint) (table->field[0]->ptr - table->record[0]);
 
   if (tree_mode)
     delete_tree(tree);

sql/item_sum.h

@@ -681,7 +681,6 @@ class Item_func_group_concat : public Item_sum
   MYSQL_ERROR *warning;
   bool warning_available;
   uint key_length;
-  int rec_offset;
   bool tree_mode;
   bool distinct;
   bool warning_for_row;
@@ -704,7 +703,6 @@ class Item_func_group_concat : public Item_sum
   TREE *tree;
   TABLE *table;
   ORDER **order;
-  uint  *field_offsets;
   TABLE_LIST *tables_list;
   ulong group_concat_max_len;
   uint show_elements;

sql/mysqld.cc

@@ -2527,6 +2527,8 @@ int main(int argc, char **argv)
     }
   }
 #endif
+  thread_stack_min=thread_stack - STACK_MIN_SIZE;
+
   (void) thr_setconcurrency(concurrency);	// 10 by default
 
   /*

sql/sql_parse.cc

@@ -3717,6 +3717,10 @@ static bool check_db_used(THD *thd,TABLE_LIST *tables)
 #define used_stack(A,B) (long) (B - A)
 #endif
 
+#ifndef DBUG_OFF
+long max_stack_used;
+#endif
+
 #ifndef EMBEDDED_LIBRARY
 bool check_stack_overrun(THD *thd,char *buf __attribute__((unused)))
 {
@@ -3729,6 +3733,9 @@ bool check_stack_overrun(THD *thd,char *buf __attribute__((unused)))
     thd->fatal_error();
     return 1;
   }
+#ifndef DBUG_OFF
+  max_stack_used= max(max_stack_used, stack_used);
+#endif
   return 0;
 }
 #endif /* EMBEDDED_LIBRARY */

sql/sql_select.cc

@@ -8402,12 +8402,11 @@ setup_copy_fields(THD *thd, TMP_TABLE_PARAM *param,
   Item *pos;
   List_iterator_fast<Item> li(all_fields);
   Copy_field *copy;
-  DBUG_ENTER("setup_copy_fields");
   res_selected_fields.empty();
   res_all_fields.empty();
   List_iterator_fast<Item> itr(res_all_fields);
-
   uint i, border= all_fields.elements - elements;
+  DBUG_ENTER("setup_copy_fields");
 
   if (!(copy=param->copy_field= new Copy_field[param->field_count]))
     goto err2;

sql/sql_yacc.yy

@@ -3063,11 +3063,15 @@ sum_expr:
 	  { $$=new Item_sum_variance($3); }
 	| SUM_SYM '(' in_sum_expr ')'
 	  { $$=new Item_sum_sum($3); }
-	| GROUP_CONCAT_SYM '(' opt_distinct expr_list opt_gorder_clause
-	  opt_gconcat_separator ')'
+	| GROUP_CONCAT_SYM '(' opt_distinct
+	  { Select->in_sum_expr++; }
+	  expr_list opt_gorder_clause
+	  opt_gconcat_separator
+	 ')'
 	  {
-	    $$=new Item_func_group_concat($3,$4,Select->gorder_list,$6);
-	    $4->empty();
+	    Select->in_sum_expr--;
+	    $$=new Item_func_group_concat($3,$5,Select->gorder_list,$7);
+	    $5->empty();
 	  };
 
 opt_distinct: