SegFault with HibernateD

[Venkat]

I get a SegFault with the main method below which uses HibernateD 
. The second main method which uses ddbc just works fine. What is 
wrong with the first main method ? I have attached the error at 
the bottom although I don't think it says much.

This method uses HibernateD

int main() {
	// setup DB connection
	string url = MySQLDriver.generateUrl("localhost", 3306, "test");
	string[string] params = MySQLDriver.setUserAndPassword("test", 
"test");
	DataSource ds = new ConnectionPoolDataSourceImpl(new 
MySQLDriver(), url, params);

	// create metadata from annotations
	EntityMetaData schema = new SchemaInfoImpl!(Preferences);

	// create session factory
	Dialect dialect = new MySQLDialect();
	SessionFactory factory = new SessionFactoryImpl(schema, dialect, 
ds);
	scope(exit) factory.close();
	
	auto conn = ds.getConnection();
	scope(exit) conn.close();
	
	// create session
	Session sess = factory.openSession();
	scope(exit) sess.close();

	Query q = sess.createQuery("select p from Preferences p");
	Preferences[] list = q.list!Preferences();

	return 0;
}

The method below uses ddbc.

int main(string[] args) {

     string url = 
"mysql://localhost:3306/test?user=test,password=test";

     // creating Connection
     auto conn = createConnection(url);
     scope(exit) conn.close();

     // creating Statement
     auto stmt = conn.createStatement();
     scope(exit) stmt.close();

     // reading DB
     auto rs = stmt.executeQuery("SELECT * FROM preferences_wm 
ORDER BY id");
     writeln(rs.getFetchSize());
     return 0;
}


This is the error.

Running ./bin/hibernated-test
Program exited with code -11
Full exception: 
object.Exception at source/dub/generators/build.d(530): Program 
exited with code -11
----------------
/home/vagrant/old-dmd/dmd2/linux/bin64/../../src/phobos/std/exception.d:420 pure @safe void std.exception.bailOut!(Exception).bailOut(immutable(char)[], ulong, const(char[])) [0x8d036c]
/home/vagrant/old-dmd/dmd2/linux/bin64/../../src/phobos/std/exception.d:388 pure @safe bool std.exception.enforce!(Exception, bool).enforce(bool, lazy const(char)[], immutable(char)[], ulong) [0x8defcd]
source/dub/generators/build.d:530 void 
dub.generators.build.BuildGenerator.runTarget(dub.internal.vibecompat.inet.path.Path, const(dub.compilers.buildsettings.BuildSettings), immutable(char)[][], dub.generators.generator.GeneratorSettings) [0x97b1c9]
source/dub/generators/build.d:110 void 
dub.generators.build.BuildGenerator.performPostGenerateActions(dub.generators.generator.GeneratorSettings, const(dub.generators.generator.ProjectGenerator.TargetInfo[immutable(char)[]])) [0x977541]
source/dub/generators/generator.d:118 void 
dub.generators.generator.ProjectGenerator.generate(dub.generators.generator.GeneratorSettings) [0x9805a0]
source/dub/dub.d:494 void 
dub.dub.Dub.generateProject(immutable(char)[], 
dub.generators.generator.GeneratorSettings) [0x8918e0]
source/dub/commandline.d:789 int 
dub.commandline.GenerateCommand.execute(dub.dub.Dub, 
immutable(char)[][], immutable(char)[][]) [0x857579]
source/dub/commandline.d:821 int 
dub.commandline.BuildCommand.execute(dub.dub.Dub, 
immutable(char)[][], immutable(char)[][]) [0x857913]
source/dub/commandline.d:849 int 
dub.commandline.RunCommand.execute(dub.dub.Dub, 
immutable(char)[][], immutable(char)[][]) [0x857b23]
source/dub/commandline.d:239 int 
dub.commandline.runDubCommandLine(immutable(char)[][]) [0x853647]
source/app.d:14 _Dmain [0x84fc27]