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MDEV-11444 Server crashes in String::ptr / Item_func_json_depth::val_int.

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CAST AS JSON didn't set the null_value mark properly.
This commit is contained in:
Alexey Botchkov
2016-12-03 11:32:47 +04:00
parent 4ad0813a55
commit eca1579051
4 changed files with 13 additions and 5 deletions
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6
sql/item_jsonfunc.h
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@ -420,11 +420,7 @@ public:
const char *func_name() const { return "cast_as_json"; }
bool is_json_type() { return true; }
void fix_length_and_dec();
String *val_str(String *str)
{
return args[0]->val_str(str);
}
String *val_str(String *str);
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_json_typecast>(thd, mem_root, this); }
};