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8.0.12 JDBC api crash VS2017
Posted by: Lefteris E
Date: August 10, 2018 02:07AM

The issue persists in version 8.0.12. Same exact error message.

It is not deterministic since it is caused by the destruction order of 2 global variables:

One global variable is in the c library:
static MEM_ROOT mem_root; (client_plugin.cc line 106)

The second global variable is in the c++ connector:
static std::map< sql::SQLString, boost::shared_ptr<MySQL_Driver> > driver; (mysql_driver.cpp line 74)

You may be lucky enough and driver gets destroyed before mem_root. But in my case mem_root is destroyed first, and then driver's destructor tries to access it.


mysql_driver.cpp line 74 (static std::map< sql::SQLString, boost::shared_ptr<MySQL_Driver> > driver;)
mysql_driver.h line 58 (boost::scoped_ptr< ::sql::mysql::NativeAPI::NativeDriverWrapper > proxy;)
mysql_native_driver_wrapper.h line 51 (boost::shared_ptr<IMySQLCAPI> api;)
libmysql_static_proxy.cpp line 55 (this->library_end();)
libmysql_static_proxy.cpp line 252 (return ::mysql_library_end();)
libmysql.cc line 194 (mysql_client_plugin_deinit();)
client_plugin.cc line 362 (for (p = plugin_list; p; p = p->next) )

*Crash becauce plugin_list[2] points to mem_root allocation that was released*

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