This is the function that should take into account TLS block, and 1MB is
too high, since it will be used for sigaltstack() on SIGSEGV
v0: copy-paste glibc __pthread_get_minstack()
v2: return static 16K instead of 1MB
ASAN report:
=================================================================
==7686==ERROR: AddressSanitizer: container-overflow on address 0x6200000bf080 at pc 0x00002a787e79 bp 0x7fffffffa2f0 sp 0x7fffffffa2e8
READ of size 4 at 0x6200000bf080 thread T0
0 0x2a787e78 in replxx::calculate_displayed_length(char32_t const*, int) obj-x86_64-linux-gnu/../contrib/replxx/src/util.cxx:66:15
1 0x2a75786c in replxx::Replxx::ReplxxImpl::dynamicRefresh(replxx::Prompt&, char32_t*, int, int) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:2201:3
2 0x2a7453f0 in replxx::Replxx::ReplxxImpl::incremental_history_search(char32_t) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:2008:3
3 0x2a73eecc in replxx::Replxx::ReplxxImpl::action(unsigned long long, replxx::Replxx::ACTION_RESULT (replxx::Replxx::ReplxxImpl::* const&)(char32_t), char32_t) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:1246:29
4 0x2a73eecc in replxx::Replxx::ReplxxImpl::invoke(replxx::Replxx::ACTION, char32_t) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:318:70
5 0x2a74ed29 in std::__1::__function::__policy_func<replxx::Replxx::ACTION_RESULT (char32_t)>::operator()(char32_t&&) const obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2221:16
6 0x2a74ed29 in std::__1::function<replxx::Replxx::ACTION_RESULT (char32_t)>::operator()(char32_t) const obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2560:12
7 0x2a74ed29 in replxx::Replxx::ReplxxImpl::get_input_line() obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx🔢11
8 0x2a74dd3c in replxx::Replxx::ReplxxImpl::input(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:580:8
9 0x2a2a4075 in ReplxxLineReader::readOneLine(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) obj-x86_64-linux-gnu/../base/common/ReplxxLineReader.cpp:112:29
10 0x2a29b499 in LineReader::readLine(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) obj-x86_64-linux-gnu/../base/common/LineReader.cpp:81:26
11 0xb580f02 in DB::Client::mainImpl() obj-x86_64-linux-gnu/../programs/client/Client.cpp:665:33
12 0xb575825 in DB::Client::main(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) obj-x86_64-linux-gnu/../programs/client/Client.cpp:300:20
13 0x2a3aff25 in Poco::Util::Application::run() obj-x86_64-linux-gnu/../contrib/poco/Util/src/Application.cpp:334:8
14 0xb54c810 in mainEntryClickHouseClient(int, char**) obj-x86_64-linux-gnu/../programs/client/Client.cpp:2702:23
15 0xb326d8a in main obj-x86_64-linux-gnu/../programs/main.cpp:360:12
16 0x7ffff7dcbb24 in __libc_start_main (/usr/lib/libc.so.6+0x27b24)
17 0xb2794ad in _start (/src/ch/tmp/upstream/clickhouse-asan+0xb2794ad)
0x6200000bf080 is located 0 bytes inside of 3672-byte region [0x6200000bf080,0x6200000bfed8)
allocated by thread T0 here:
0 0xb3231dd in operator new(unsigned long) (/src/ch/tmp/upstream/clickhouse-asan+0xb3231dd)
1 0x2a75fb15 in void* std::__1::__libcpp_operator_new<unsigned long>(unsigned long) obj-x86_64-linux-gnu/../contrib/libcxx/include/new:235:10
2 0x2a75fb15 in std::__1::__libcpp_allocate(unsigned long, unsigned long) obj-x86_64-linux-gnu/../contrib/libcxx/include/new:261:10
3 0x2a75fb15 in std::__1::allocator<char32_t>::allocate(unsigned long) obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:840:38
4 0x2a75fb15 in std::__1::allocator_traits<std::__1::allocator<char32_t> >::allocate(std::__1::allocator<char32_t>&, unsigned long) obj-x86_64-linux-gnu/../contrib/libcxx/include/__memory/allocator_traits.h:468:21
5 0x2a75fb15 in std::__1::vector<char32_t, std::__1::allocator<char32_t> >::__vallocate(unsigned long) obj-x86_64-linux-gnu/../contrib/libcxx/include/vector:993:37
6 0x2a75fb15 in std::__1::enable_if<(__is_cpp17_forward_iterator<char32_t*>::value) && (is_constructible<char32_t, std::__1::iterator_traits<char32_t*>::reference>::value), void>::type std::__1::vector<char32_t, std::__1::allocator<char32_t> >::assign<char32_t*>(char32_t*, char32_t*) obj-x86_64-linux-gnu/../contrib/libcxx/include/vector:1460:9
7 0x2a745242 in std::__1::vector<char32_t, std::__1::allocator<char32_t> >::operator=(std::__1::vector<char32_t, std::__1::allocator<char32_t> > const&) obj-x86_64-linux-gnu/../contrib/libcxx/include/vector:1405:9
8 0x2a745242 in replxx::UnicodeString::assign(replxx::UnicodeString const&) obj-x86_64-linux-gnu/../contrib/replxx/src/unicodestring.hxx:83:9
9 0x2a745242 in replxx::Replxx::ReplxxImpl::incremental_history_search(char32_t) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:1993:24
10 0x2a73eecc in replxx::Replxx::ReplxxImpl::action(unsigned long long, replxx::Replxx::ACTION_RESULT (replxx::Replxx::ReplxxImpl::* const&)(char32_t), char32_t) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:1246:29
11 0x2a73eecc in replxx::Replxx::ReplxxImpl::invoke(replxx::Replxx::ACTION, char32_t) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:318:70
12 0x2a74ed29 in std::__1::__function::__policy_func<replxx::Replxx::ACTION_RESULT (char32_t)>::operator()(char32_t&&) const obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2221:16
13 0x2a74ed29 in std::__1::function<replxx::Replxx::ACTION_RESULT (char32_t)>::operator()(char32_t) const obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2560:12
14 0x2a74ed29 in replxx::Replxx::ReplxxImpl::get_input_line() obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx🔢11
15 0x2a74dd3c in replxx::Replxx::ReplxxImpl::input(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) obj-x86_64-linux-gnu/../contrib/replxx/src/replxx_impl.cxx:580:8
16 0x2a2a4075 in ReplxxLineReader::readOneLine(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) obj-x86_64-linux-gnu/../base/common/ReplxxLineReader.cpp:112:29
17 0x2a29b499 in LineReader::readLine(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) obj-x86_64-linux-gnu/../base/common/LineReader.cpp:81:26
18 0xb580f02 in DB::Client::mainImpl() obj-x86_64-linux-gnu/../programs/client/Client.cpp:665:33
19 0xb575825 in DB::Client::main(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) obj-x86_64-linux-gnu/../programs/client/Client.cpp:300:20
20 0x2a3aff25 in Poco::Util::Application::run() obj-x86_64-linux-gnu/../contrib/poco/Util/src/Application.cpp:334:8
21 0xb54c810 in mainEntryClickHouseClient(int, char**) obj-x86_64-linux-gnu/../programs/client/Client.cpp:2702:23
22 0xb326d8a in main obj-x86_64-linux-gnu/../programs/main.cpp:360:12
23 0x7ffff7dcbb24 in __libc_start_main (/usr/lib/libc.so.6+0x27b24)
HINT: if you don't care about these errors you may set ASAN_OPTIONS=detect_container_overflow=0.
If you suspect a false positive see also: https://github.com/google/sanitizers/wiki/AddressSanitizerContainerOverflow.
SUMMARY: AddressSanitizer: container-overflow obj-x86_64-linux-gnu/../contrib/replxx/src/util.cxx:66:15 in replxx::calculate_displayed_length(char32_t const*, int)
Shadow bytes around the buggy address:
0x0c408000fdc0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c408000fdd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c408000fde0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c408000fdf0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c408000fe00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c408000fe10:[fc]fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
0x0c408000fe20: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
0x0c408000fe30: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
0x0c408000fe40: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
0x0c408000fe50: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
0x0c408000fe60: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Shadow gap: cc
==7686==ABORTING
Refs: https://github.com/ClickHouse-Extras/replxx/pull/16
v2: fix test, do not use /dev/null since it client will lock it
