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MDEV-26724 Endless loop in json_escape_to_string upon ... empty string

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Correctly handle empty string when [un]escaping JSON
This commit is contained in:
Sergei Petrunia
2021-10-01 14:15:17 +03:00
parent 61cd4f4412
commit 5c709ef18c
3 changed files with 28 additions and 2 deletions
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16
mysql-test/main/statistics_json.result
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@ -7853,3 +7853,19 @@ test.t1 analyze status OK
select * from t1 where a = 'foo';
a
drop table t1;
#
# MDEV-26724 Endless loop in json_escape_to_string upon ... empty string
#
CREATE TABLE t1 (f VARCHAR(8));
INSERT INTO t1 VALUES ('a'),(''),('b');
SET histogram_type=JSON_HB;
ANALYZE TABLE t PERSISTENT FOR ALL;
Table Op Msg_type Msg_text
test.t analyze Error Table 'test.t' doesn't exist
test.t analyze status Operation failed
select * from t1;
f
a
b
drop table t1;