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ClickHouse® is a real-time analytics DBMS
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18eb8b6d48
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Azat Khuzhin 18eb8b6d48 Fix UB (stack-use-after-scope) in extactAll() 
After #37544 OptimizedRegularExpressionImpl started to be moved, but
StringSearcher is not copyable since it holds pointers that goes out of
scope after move (before Regexps::get() returns std::shared_ptr<Regexp>
but it had been replaced with Regexps::createRegexp() that returns
Regexp object).

<details>

<summary>ASan report</summary>

    ==48348==ERROR: AddressSanitizer: stack-use-after-scope on address 0x7fff577239a9 at pc 0x00001518209b bp 0x7fff57723820 sp 0x7fff57723818
    READ of size 1 at 0x7fff577239a9 thread T0
        0 0x1518209a in char8_t const* DB::StringSearcher<true, true>::search<char8_t>(char8_t const*, char8_t const*) const /bld/./src/Common/StringSearcher.h:730:41
        1 0x1518dd3f in char8_t const* DB::StringSearcher<true, true>::search<char8_t>(char8_t const*, unsigned long) const /bld/./src/Common/StringSearcher.h:751:16
        2 0x1518dd3f in OptimizedRegularExpressionImpl<false>::match(char const*, unsigned long, std::__1::vector<OptimizedRegularExpressionDetails::Match, std::__1::allocator<OptimizedRegularExpressionDetails::Match> >&, unsigned int) const /bld/./src/Common/OptimizedRegularExpression.cpp:463:54
        3 0x1811cb42 in DB::ExtractAllImpl::get(char const*&, char const*&) /bld/./src/Functions/FunctionsStringArray.h:588:18
        4 0x1811aa62 in DB::FunctionTokens<DB::ExtractAllImpl>::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long) const /bld/./src/Functions/FunctionsStringArray.h:704:30
        5 0x14fe17b4 in DB::IFunction::executeImplDryRun(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long) const /bld/./src/Functions/IFunction.h:409:16

    Address 0x7fff577239a9 is located in stack of thread T0 at offset 201 in frame
        0 0x1518d98f in OptimizedRegularExpressionImpl<false>::match(char const*, unsigned long, std::__1::vector<OptimizedRegularExpressionDetails::Match, std::__1::allocator<OptimizedRegularExpressionDetails::Match> >&, unsigned int) const /bld/./src/Common/OptimizedRegularExpression.cpp:439

</details>

CI: https://s3.amazonaws.com/clickhouse-test-reports/39342/c6f7698f9ad6ae22199182ebf7c3b2dac77d69d8/fuzzer_astfuzzerasan,actions//report.html
Fixes: #37544 (cc @rschu1ze)
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
2022-07-20 10:18:44 +03:00
.github Rename workflow yml to reflect the name, increase frequency 2022-07-15 17:21:17 +02:00
base Merge pull request #39299 from azat/fix-lsan-v3 2022-07-19 14:27:41 +02:00
benchmark Remove old file 2022-07-12 20:28:02 +02:00
cmake Merge pull request #37891 from guowangy/lz4-decompress-vbmi 2022-07-18 00:37:59 +03:00
contrib Fix googletest contrib compilation (due to GTEST_HAS_POSIX_RE=0) 2022-07-17 17:24:02 +03:00
docker Fix builder image for releases w/o diagnostics tool 2022-07-16 12:07:58 +03:00
docs Merge pull request #39071 from jiahui-97/parse_timedelta 2022-07-19 12:39:56 +02:00
packages Merge pull request #38580 from ClickHouse/artifactory-arm64 2022-07-04 12:31:52 +02:00
programs Fix leaking of logger in clickhouse-disks 2022-07-18 12:35:53 +03:00
src Fix UB (stack-use-after-scope) in extactAll() 2022-07-20 10:18:44 +03:00
tests Fix UB (stack-use-after-scope) in extactAll() 2022-07-20 10:18:44 +03:00
utils Use CH custom platform macro for OS Darwin 2022-07-18 09:59:02 +02:00
website Add ClickHouse with zstd to benchmark 2022-07-12 23:51:12 +02:00
.clang-format add BeforeLambdaBody to .clang-format 2022-02-11 16:51:45 +01:00
.clang-tidy Revert "Fix errors of CheckTriviallyCopyableMove type" 2022-06-07 13:53:10 +02:00
.editorconfig Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
.gitattributes mark test data as binary 2022-01-22 03:19:47 +03:00
.gitignore Add cmake page back to docs && fix /settings/settings in /zh 2022-04-24 16:47:19 -06:00
.gitmodules Merge branch 'master' into nats-integration 2022-07-04 21:06:07 +02:00
.pylintrc Cover deprecated bad-* pylint options with black 2022-06-08 14:18:28 +02:00
.vimrc Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
.yamllint Drop truthy.check-keys from yamllint (does not supported on CI) 2021-02-21 06:15:36 +03:00
AUTHORS Update AUTHORS 2021-09-22 11:38:03 +03:00
CHANGELOG.md Update CHANGELOG.md 2022-07-01 02:47:15 +03:00
CMakeLists.txt Add check for CLICKHOUSE_SPLIT_BINARY=1 with USE_STATIC_LIBRARIES=1 2022-07-18 11:42:49 +03:00
CODE_OF_CONDUCT.md Add minimal code of conduct #9676 2020-03-16 12:44:28 +03:00
CONTRIBUTING.md Mention ClickHouse CLA in CONTRIBUTING.md (#32697) 2021-12-14 03:47:19 +03:00
format_sources allow several <graphite> targets (#603) 2017-03-21 23:08:09 +04:00
LICENSE Update year 2022-01-27 01:01:27 +03:00
PreLoad.cmake Do not override compiler if it had been already set 2022-07-06 08:51:57 +03:00
README.md Update README.md 2022-06-30 12:03:09 -06:00
SECURITY.md Update SECURITY.md 2022-07-06 22:04:53 +10:00

README.md

ClickHouse — open source distributed column-oriented DBMS

ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time.

Useful Links

  • Official website has a quick high-level overview of ClickHouse on the main page.
  • Tutorial shows how to set up and query a small ClickHouse cluster.
  • Documentation provides more in-depth information.
  • YouTube channel has a lot of content about ClickHouse in video format.
  • Slack and Telegram allow chatting with ClickHouse users in real-time.
  • Blog contains various ClickHouse-related articles, as well as announcements and reports about events.
  • Code Browser (Woboq) with syntax highlight and navigation.
  • Code Browser (github.dev) with syntax highlight, powered by github.dev.
  • Contacts can help to get your questions answered if there are any.

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