merge

mysys/my_malloc.c

@@ -185,7 +185,7 @@ void *my_realloc(void *oldpoint, size_t size, myf my_flags)
       /* memory moved between system and thread specific */
       update_malloc_size(-(longlong) old_size - MALLOC_PREFIX_SIZE, old_flags);
       update_malloc_size((longlong) size + MALLOC_PREFIX_SIZE,
-                         my_flags & MY_THREAD_SPECIFIC);
+                         test(my_flags & MY_THREAD_SPECIFIC));
     }
     else
       update_malloc_size((longlong)size - (longlong)old_size, old_flags);

sql/item_strfunc.h

@@ -1038,7 +1038,7 @@ class Item_func_dyncol_json: public Item_str_func
   String *val_str(String *);
   void fix_length_and_dec()
   {
-    maybe_null= TRUE;
+    set_persist_maybe_null(1);
     collation.set(&my_charset_bin);
     decimals= 0;
   }