[Coverity Scan] illegal memory access (USE_AFTER_FREE) in designer

New defect(s) Reported-by: Coverity Scan
Showing 2 of 2 defect(s)


** CID 21591:  Error handling issues  (CHECKED_RETURN)
/qttools/src/designer/src/designer/qdesigner_server.cpp: 50 in QDesignerServer::QDesignerServer(QObject *)()


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*** CID 21591:  Error handling issues  (CHECKED_RETURN)
/qttools/src/designer/src/designer/qdesigner_server.cpp: 50 in QDesignerServer::QDesignerServer(QObject *)()
44    
45     QDesignerServer::QDesignerServer(QObject *parent)
46         : QObject(parent)
47     {
48         m_socket = 0;
49         m_server = new QTcpServer(this);
>>>     CID 21591:  Error handling issues  (CHECKED_RETURN)
>>>     Calling "listen" without checking return value (as is done elsewhere 4 out of 5 times).
50         m_server->listen(QHostAddress::LocalHost, 0);
51         if (m_server->isListening())
52         {
53             connect(m_server, &QTcpServer::newConnection,
54                     this, &QDesignerServer::handleNewConnection);
55         }

** CID 176868:  Memory - illegal accesses  (USE_AFTER_FREE)
/qtbase/src/plugins/sqldrivers/sqlite/qsql_sqlite.cpp: 583 in _q_regexp(sqlite3_context *, int, Mem **)()


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*** CID 176868:  Memory - illegal accesses  (USE_AFTER_FREE)
/qtbase/src/plugins/sqldrivers/sqlite/qsql_sqlite.cpp: 583 in _q_regexp(sqlite3_context *, int, Mem **)()
577         QRegularExpression *regexp = cache->object(pattern);
578         if (!regexp) {
579             regexp = new QRegularExpression(pattern, QRegularExpression::DontCaptureOption
580                                             | QRegularExpression::OptimizeOnFirstUsageOption);
581             cache->insert(pattern, regexp);
582         }
>>>     CID 176868:  Memory - illegal accesses  (USE_AFTER_FREE)
>>>     Passing freed pointer "regexp" as an argument to "contains".
583         const bool found = subject.contains(*regexp);
584    
585         sqlite3_result_int(context, int(found));
586     }
587    
588     static void _q_regexp_cleanup(void *cache)