Vertica client 9.0.1 potential memory leak

pegazik

Hi,

I am connecting to vertica database (running version 9.0.1-6) with a client 9.0.1-4 and odbc version 3.52.7-7 on red-hat 7.6. Running valgrind on a simple example program found in the documentation (https://vertica.com/docs/9.0.x/HTML/index.htm#Authoring/ConnectingToVertica/ClientODBC/ConnectingToVertica.htm?TocPath=Connecting%20to%20Vertica|Client%20Libraries|Programming%20ODBC%20Client%20Applications|_____5) reports memory leaks (full output below). Am I missing something?

==25988== Memcheck, a memory error detector
==25988== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==25988== Using Valgrind-3.14.0.GIT and LibVEX; rerun with -h for copyright info
==25988== Command: ./vertica
==25988==
Allocated an environment handle.
Set application version to ODBC 3.
Allocated Database handle.
Connecting to database.
Connected to database.
Disconnecting and freeing handles.
==25988==
==25988== HEAP SUMMARY:
==25988== in use at exit: 616 bytes in 3 blocks
==25988== total heap usage: 13,248 allocs, 13,245 frees, 3,802,001 bytes allocated
==25988==
==25988== 16 bytes in 1 blocks are definitely lost in loss record 1 of 3
==25988== at 0x4C29E83: malloc (vg_replace_malloc.c:299)
==25988== by 0x7B8B0C9: strdup (in /usr/lib64/libc-2.17.so)
==25988== by 0x500EB37: PQcreateConn (fe-connect.c:868)
==25988== by 0x4FE9298: Vertica::VPGConnection::Setup(std::string const&, std::string const&, std::string const&, std::string const&, std::string const&) (VPGConnection.cpp:77)
==25988== by 0x4FE1337: Vertica::VConnection::Connect(std::map<Simba::Support::simba_wstring, Simba::Support::Variant, Simba::Support::simba_wstring::CaseInsensitiveComparator, std::allocator<std::pair > > const&) (VConnection.cpp:440)
==25988== by 0x58C2E09: Simba::ODBC::ConnectionState2::SQLConnectW(Simba::ODBC::Connection*, wchar_t*, short, wchar_t*, short, wchar_t*, short) (ConnectionState2.cpp:285)
==25988== by 0x58B7BFE: Simba::ODBC::Connection::SQLConnectW(wchar_t*, short, wchar_t*, short, wchar_t*, short) (Connection.cpp:1273)
==25988== by 0x585FC80: Simba::ODBC::SQLConnectTask::DoSynchronously(Simba::ODBC::Connection&, Simba::ODBC::SQLConnectTask::TaskParameters const&) (SQLConnectTask.h:308)
==25988== by 0x58AA4EC: short DoTask<Simba::ODBC::SQLConnectTask >(char const*, void*, Simba::ODBC::SQLConnectTask::TaskParameters&) (CInterface.cpp:638)
==25988== by 0x5870A97: SQLConnect (CInterface.cpp:1293)
==25988== by 0x40083A: main (in ~/vertica)
==25988==
==25988== 32 bytes in 1 blocks are still reachable in loss record 2 of 3
==25988== at 0x4C2BF99: calloc (vg_replace_malloc.c:752)
==25988== by 0x7ECD54F: _dlerror_run (in /usr/lib64/libdl-2.17.so)
==25988== by 0x7ECCF80: dlopen@@GLIBC_2.2.5 (in /usr/lib64/libdl-2.17.so)
==25988== by 0x567C6AC: Simba::Support::StepUtilities::GetStepKey() (StepUtilities.cpp:33)
==25988== by 0x55E3B91: Simba::DSI::SharedSingletonManager::Initialize(bool) (SharedSingletonManager.cpp:95)
==25988== by 0x58EAE2C: Simba::ODBC::Driver::InitializeSingletons() (Driver.cpp:593)
==25988== by 0x58EC31A: Simba::ODBC::Driver::Initialize() (Driver.cpp:449)
==25988== by 0x5861BFF: GetDriver (Driver.h:250)
==25988== by 0x5861BFF: SQLAllocHandle (CInterface.cpp:681)
==25988== by 0x40072F: main (in ~/vertica)
==25988==
==25988== 568 bytes in 1 blocks are still reachable in loss record 3 of 3
==25988== at 0x4C29E83: malloc (vg_replace_malloc.c:299)
==25988== by 0x7B6DA3C: __fopen_internal (in /usr/lib64/libc-2.17.so)
==25988== by 0x4FE759D: parse_ini_filename(Vertica::IniData*, char const*) [clone .constprop.27] (VDriver.cpp:263)
==25988== by 0x4FE854F: SQLGetPrivateProfileString (VDriver.cpp:422)
==25988== by 0x58C72EF: void GetKeyValuePairsT(int (*)(char const*, char const*, char const*, char*, int, char const*), std::string const&, std::string const&, std::map<Simba::Support::simba_wstring, Simba::Support::Variant, Simba::Support::simba_wstring::CaseInsensitiveComparator, std::allocator<std::pair > >&) (ODBCIniReader.cpp:76)
==25988== by 0x58C6F49: Simba::ODBC::ODBCIniReader::GetKeyValuePairs(bool, Simba::Support::simba_wstring const&, std::map<Simba::Support::simba_wstring, Simba::Support::Variant, Simba::Support::simba_wstring::CaseInsensitiveComparator, std::allocator<std::pair > >&) (ODBCIniReader.cpp:293)
==25988== by 0x58CAFAC: Simba::ODBC::ConnectionSettings::ConnectionSettings(Simba::Support::simba_wstring const&, Simba::Support::simba_wstring const&, Simba::Support::simba_wstring const&, Simba::ODBC::Connection&) (ConnectionSettings.cpp:287)
==25988== by 0x58C2DAA: Simba::ODBC::ConnectionState2::SQLConnectW(Simba::ODBC::Connection*, wchar_t*, short, wchar_t*, short, wchar_t*, short) (ConnectionState2.cpp:269)
==25988== by 0x58B7BFE: Simba::ODBC::Connection::SQLConnectW(wchar_t*, short, wchar_t*, short, wchar_t*, short) (Connection.cpp:1273)
==25988== by 0x585FC80: Simba::ODBC::SQLConnectTask::DoSynchronously(Simba::ODBC::Connection&, Simba::ODBC::SQLConnectTask::TaskParameters const&) (SQLConnectTask.h:308)
==25988== by 0x58AA4EC: short DoTask<Simba::ODBC::SQLConnectTask >(char const*, void*, Simba::ODBC::SQLConnectTask::TaskParameters&) (CInterface.cpp:638)
==25988== by 0x5870A97: SQLConnect (CInterface.cpp:1293)
==25988==
==25988== LEAK SUMMARY:
==25988== definitely lost: 16 bytes in 1 blocks
==25988== indirectly lost: 0 bytes in 0 blocks
==25988== possibly lost: 0 bytes in 0 blocks
==25988== still reachable: 600 bytes in 2 blocks
==25988== suppressed: 0 bytes in 0 blocks
==25988==
==25988== For counts of detected and suppressed errors, rerun with: -v
==25988== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)