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bug 45048 maybe? test code included
Posted by: Dominic Froud
Date: June 23, 2009 05:43AM

The following code faults when I run it unless I pass an argument (which disables the deletion of "pstmt" after it is used to create "res").

I've run this against 1.0.4-beta and it hangs. With 1.0.5 it segfaults after 82 rows. You may need more rows to trigger the problem.

Could this be a duplicate of bug 45048?

The following code closely reflects my original code, including having a constructor for DummyObject which in this case is redundant.

#include "mysql_connection.h"
#include <cppconn/driver.h>
#include <cppconn/resultset.h>
#include <cppconn/statement.h>
#include <cppconn/prepared_statement.h>
#include <stdlib.h>
#include <string>

class DummyObject {
std::string s;
DummyObject() {

void set_s(std::string in) {
s = in;

int main(int argc, char *argv[]) {
sql::Driver *driver;
sql::Connection *con;
sql::ResultSet *res;
sql::Statement *stmt;
sql::PreparedStatement *pstmt;
std::string sql;

driver = get_driver_instance();
con = driver->connect("tcp://", "root", "");

stmt = con->createStatement();
stmt->execute("drop table if exists test123");
stmt->execute("create table test123 ( a varchar(255) )");
for(int i=0; i<100; i++) {
sql = "insert into test123 values (\"";
for(int j=0; j<16; j++) {
char c = (rand() & 0xf) + 'A';
sql += c;
sql += "\")";
delete stmt;

pstmt = con->prepareStatement("select * from test123");
res = pstmt->executeQuery();
if (argc < 2) {
delete pstmt;

while(res->next()) {
DummyObject *dummy_obj = new DummyObject();

dummy_obj->set_s( res->getString(1) );
std::cout << res->getString(1) << std::endl;

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bug 45048 maybe? test code included
June 23, 2009 05:43AM

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