ClickHouse/tests/queries/0_stateless/01666_lcm_ubsan.reference
Azat Khuzhin 27a5794795 Fix UBsan report in lcm()/gcd()
Changelog:
- Check against INT64_MIN/INT64_MAX
- Check against std::numeric_limits<>::min/max
- Move common code into separate header - GCDLCMImpl.h
- Forbid floats

UBsan report [1].

  [1]: https://clickhouse-test-reports.s3.yandex.net/19466/cb30a02540a0f223df6668c5f88ff84aa666ff54/fuzzer_ubsan/report.html#fail1
2021-01-26 08:33:49 +03:00

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-- { echo }
SELECT lcm(9223372036854775807, -9223372036854775808); -- { serverError 407 }
SELECT lcm(9223372036854775808, -9223372036854775807); -- { serverError 407 }
SELECT lcm(-9223372036854775808, 9223372036854775807); -- { serverError 407 }
SELECT lcm(-9223372036854775807, 9223372036854775808); -- { serverError 407 }
SELECT lcm(9223372036854775808, -1); -- { serverError 407 }
SELECT lcm(-170141183460469231731687303715884105728, -170141183460469231731687303715884105728); -- { serverError 48 }
SELECT lcm(toInt128(-170141183460469231731687303715884105728), toInt128(-170141183460469231731687303715884105728)); -- { serverError 407 }
SELECT lcm(toInt128(-170141183460469231731687303715884105720), toInt128(-170141183460469231731687303715884105720)); -- { serverError 407 }
SELECT lcm(toInt128('-170141183460469231731687303715884105720'), toInt128('-170141183460469231731687303715884105720'));
170141183460469231731687303715884105720
SELECT lcm(-9223372036854775806, -9223372036854775806);
9223372036854775806