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13 Commits

Author SHA1 Message Date
Azat Khuzhin
00fdfa115f Suppress MSan warning in NgramDistanceImpl::unrollLowering() 
NgramDistanceImpl::unrollLowering() relies on the fact that PODArray has
padding and it is OK to access more items.

Here is an MSan report:

    ==656==WARNING: MemorySanitizer: use-of-uninitialized-value
        0 0x557fd825485f in DB::NgramDistanceImpl<4ul, char8_t, false, true, false>::vectorConstant(DB::PODArray<char8_t, 4096ul, Allocator<false, false>, 63ul, 64ul> const&, DB::PODArray<unsigned long, 4096ul, Allocator<false, false>, 63ul, 64ul> const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, DB::PODArray<float, 4096ul, Allocator<false, false>, 63ul, 64ul>&) (/usr/bin/clickhouse+0x124d885f) (BuildId: 76773125d8739591c75d4f4d263a2ffe7ca96855)
        1 0x557fd824eb83 in DB::FunctionsStringSimilarity<DB::NgramDistanceImpl<4ul, char8_t, false, true, false>, DB::NameNgramSearchCaseInsensitive>::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName>> const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long) const (/usr/bin/clickhouse+0x124d2b83) (BuildId: 76773125d8739591c75d4f4d263a2ffe7ca96855)
        2 0x557fd50023b7 in DB::FunctionToExecutableFunctionAdaptor::executeImpl() const (/usr/bin/clickhouse+0xf2863b7) (BuildId: 76773125d8739591c75d4f4d263a2ffe7ca96855)

      Uninitialized value was stored to memory at
        0 0x557fd4f8da5a in __msan_memcpy (/usr/bin/clickhouse+0xf211a5a) (BuildId: 76773125d8739591c75d4f4d263a2ffe7ca96855)
        1 0x557fd8253803 in DB::NgramDistanceImpl<4ul, char8_t, false, true, false>::vectorConstant(DB::PODArray<char8_t, 4096ul, Allocator<false, false>, 63ul, 64ul> const&, DB::PODArray<unsigned long, 4096ul, Allocator<false, false>, 63ul, 64ul> const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, DB::PODArray<float, 4096ul, Allocator<false, false>, 63ul, 64ul>&) (/usr/bin/clickhouse+0x124d7803) (BuildId: 76773125d8739591c75d4f4d263a2ffe7ca96855)
        2 0x557fd824eb83 in DB::FunctionsStringSimilarity<DB::NgramDistanceImpl<4ul, char8_t, false, true, false>, DB::NameNgramSearchCaseInsensitive>::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName>> const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long) const (/usr/bin/clickhouse+0x124d2b83) (BuildId: 76773125d8739591c75d4f4d263a2ffe7ca96855)
        3 0x557fd50023b7 in DB::FunctionToExecutableFunctionAdaptor::executeImpl() const (/usr/bin/clickhouse+0xf2863b7) (BuildId: 76773125d8739591c75d4f4d263a2ffe7ca96855)

      Uninitialized value was stored to memory at
        0 0x557fd4f8da5a in __msan_memcpy (/usr/bin/clickhouse+0xf211a5a) (BuildId: 76773125d8739591c75d4f4d263a2ffe7ca96855)
        1 0x5580061699f5 in detail::memcpySmallAllowReadWriteOverflow15Impl(char*, char const*, long) build_docker/./src/Common/memcpySmall.h:42:13
        2 0x5580061699f5 in memcpySmallAllowReadWriteOverflow15(void*, void const*, unsigned long) build_docker/./src/Common/memcpySmall.h:57:5
        3 0x5580061699f5 in DB::ColumnString::replicate(DB::PODArray<unsigned long, 4096ul, Allocator<false, false>, 63ul, 64ul> const&) const build_docker/./src/Columns/ColumnString.cpp:462:13
        4 0x558005d3fae4 in DB::ColumnConst::convertToFullColumn() const build_docker/./src/Columns/ColumnConst.cpp:48:18

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
 2023-05-11 16:30:17 +02:00
Robert Schulze
348a40aa5d
Compile with C++23 2023-03-10 19:11:58 +00:00
MeenaRenganathan22
28d5c3cf7f Addressed the review comments 2023-01-11 17:00:10 -08:00
MeenaRenganathan22
25c94dfa83 Changes to support the CRC32 in PowerPC to address the WeakHash collision issue. Update the reference to support the hash values based on the specific platform 2023-01-10 21:20:13 -08:00
Suzy Wang
d57a8b502d s390x crc32 fix 2022-11-25 13:12:11 -08:00
Li Yin
4088c0a7f3 Automated function registration 
Automated register all functions with below naming convention by
iterating through the symbols:
void DB::registerXXX(DB::FunctionFactory &)
 2022-07-29 15:39:50 +08:00
Danila Kutenin
08e3f77a9c Optimize most important parts with NEON SIMD 
First part, updated most UTF8, hashing, memory and codecs. Except
utf8lower and upper, maybe a little later.

That includes huge amount of research with movemask dealing. Exact
details and blog post TBD.
 2022-06-15 13:19:29 +00:00
Robert Schulze
b24ca8de52
Fix various clang-tidy warnings 
When I tried to add cool new clang-tidy 14 warnings, I noticed that the
current clang-tidy settings already produce a ton of warnings. This
commit addresses many of these. Almost all of them were non-critical,
i.e. C vs. C++ style casts.
 2022-04-20 10:29:05 +02:00
Alexey Milovidov
fe6b7c77c7 Rename "common" to "base" 2021-10-02 10:13:14 +03:00
Alexey Milovidov
50bbfc848d Merge branch 'master' into stack-frams-size-limit 2020-07-21 14:45:15 +03:00
Alexey Milovidov
1462a66d1e Fix typos 2020-06-27 22:05:00 +03:00
Alexey Milovidov
475af33319 Avoid too large stack frames 2020-06-08 20:35:45 +03:00
Ivan Lezhankin
06446b4f08 dbms/ → src/ 2020-04-03 18:14:31 +03:00