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MDEV-31032: UBSAN|downcast of address X which does not point to an

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object of type 'Item_string' in sql/json_schema.cc

Analysis: make_string_literal() returns pointer of type
Item_basic_constant which is converted to pointer of type Item_string. Now,
Item_string is base class of Item_basic_constant, so the error about
downcasting.
Fix: using constructor of Item_string type directly instead of
downcasting would be more appropriate.
This commit is contained in:
Rucha Deodhar
2023-04-17 17:51:34 +05:30
parent 4b67ff3b25
commit 7321c71aa1
5 changed files with 45 additions and 29 deletions
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19
mysql-test/main/func_json.result
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@@ -4649,4 +4649,23 @@ JSON_SCHEMA_VALID(@schema, '9007900000000060')
SELECT JSON_SCHEMA_VALID(@schema, '9007900000000061');
JSON_SCHEMA_VALID(@schema, '9007900000000061')
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#
# MDEV-31032: UBSAN|downcast of address X which does not point to an object of type
# Item_string' in sql/json_schema.cc
#
SET @old_sql_mode= @@sql_mode;
SET @schema='{ "type":"object","patternProperties": { "^I_": {"type":"number"},"^S_" : {"type":"string"} } }';
SET SESSION sql_mode='empty_string_is_null';
SELECT JSON_SCHEMA_VALID (@schema,'{"key1":"val0","key2":0,"I_int":0,"S_":"abc","prop0":"str0"}');
JSON_SCHEMA_VALID (@schema,'{"key1":"val0","key2":0,"I_int":0,"S_":"abc","prop0":"str0"}')
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SET @@sql_mode= @old_sql_mode;
SET @property_names='{ "PropertyNames":{ "pattern": "^I_" } }';
SET GLOBAL sql_mode=17179869183;
SET @@sql_mode=DEFAULT;
SELECT JSON_SCHEMA_VALID(@property_names, '{"I_int1":3, "I_ob1":{"key1":"val1"}}');
JSON_SCHEMA_VALID(@property_names, '{"I_int1":3, "I_ob1":{"key1":"val1"}}')
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SET @@sql_mode= @old_sql_mode;
set global sql_mode=default;
# End of 11.1 test