FreeTDS Development Group

[<manoranjan_sahu AT agilent.com>]

Hello,
    I am getting about 150 bytes memory leak for each connection to the SQL 
server. Here is a sample program and some stack trace from where the memory 
was allocated. My guess is that the memory is not being freed during 
SQLDisconnect.

I am using freetds0.61 with unixodbc2.2.5  to connect to SQL server 2000.

Please let me know if there is going to be fix for this bug.

Thanks,
Manoranjan
         

---------------------------------------------------------------------------- 
CUT HERE 
----------------------------------------------------------------------

#include <stdlib.h>
#include <stdio.h>
#include </net/hydra/usr/local1/unixodbc/include/sql.h>
#include </net/hydra/usr/local1/unixodbc/include/sqlext.h>
#include </net/hydra/usr/local1/unixodbc/include/sqltypes.h>

SQLHENV          V_OD_Env;          // Handle ODBC environment
long             V_OD_erg;          // result of functions
SQLHDBC          V_OD_hdbc;         // Handle connection
SQLINTEGER       V_OD_err;

int main(int argc,char *argv[])
{
    // 1. allocate Environment handle and register version
    V_OD_erg=SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&V_OD_Env);
    if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
    {
        printf("Error AllocHandle\n");
        exit(0);
    }
    V_OD_erg=SQLSetEnvAttr(V_OD_Env, SQL_ATTR_ODBC_VERSION, 
(void*)SQL_OV_ODBC3,
0);
    if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
    {
        printf("Error SetEnv\n");
        SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
        exit(0);
    }
    // 2. allocate connection handle, set timeout
    V_OD_erg = SQLAllocHandle(SQL_HANDLE_DBC, V_OD_Env, &V_OD_hdbc);
    if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
    {
        printf("Error AllocHDB %d\n",V_OD_erg);
        SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
        exit(0);
    }
    SQLSetConnectAttr(V_OD_hdbc, SQL_LOGIN_TIMEOUT, (SQLPOINTER *)5, 0);
    // 3. Connect to the datasource "web"
    V_OD_erg = SQLConnect(V_OD_hdbc, (SQLCHAR*) "QADATASOURCE", SQL_NTS,
                                     (SQLCHAR*) "notqa", SQL_NTS,
                                     (SQLCHAR*) "notqa", SQL_NTS);
    if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
    {
        printf("Error SQLConnect %d\n",V_OD_erg);
        SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
        exit(0);
    }
    printf("Connected !\n");
    SQLDisconnect(V_OD_hdbc);
    SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc);
    SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
    return(0);
}


---------------------------------------------------------------------------- 
CUT HERE 
----------------------------------------------------------------------



MLK: 92 bytes leaked at 0x1f8a38
         This memory was allocated from:
               malloc         [rtlib.o]
               tds_alloc_login [mem.c:557]
               _SQLAllocConnect [odbc.c:497]
               SQLAllocHandle [odbc.c:472]
               __connect_part_one [SQLConnect.c:1257]
               SQLConnect     [SQLConnect.c:3429]
               main           [odbc_unpure.o]
               _start         [crt1.o]
MLK: 18 bytes leaked at 0x1fe3a8
         This memory was allocated from:
               malloc         [rtlib.o]
               strdup         [libc.so.1]
               _SQLAllocEnv   [odbc.c:543]
               SQLAllocHandle [odbc.c:475]
               __connect_part_one [SQLConnect.c:1089]
               SQLConnect     [SQLConnect.c:3429]
               main           [odbc_unpure.o]
               _start         [crt1.o] 
MLK: 16 bytes leaked at 0x1fdc10
         This memory was allocated from:
               malloc         [rtlib.o]
               _SQLAllocEnv   [odbc.c:524]
               SQLAllocHandle [odbc.c:475]
               __connect_part_one [SQLConnect.c:1089]
               SQLConnect     [SQLConnect.c:3429]
               main           [odbc_unpure.o]
               _start         [crt1.o]
MLK: 16 bytes leaked at 0x1fe1c8
         This memory was allocated from:
               malloc         [rtlib.o]
               tds_alloc_context [mem.c:462]
               _SQLAllocEnv   [odbc.c:530]
               SQLAllocHandle [odbc.c:475]
               __connect_part_one [SQLConnect.c:1089]
               SQLConnect     [SQLConnect.c:3429]
               main           [odbc_unpure.o]
               _start         [crt1.o]
MLK: 12 bytes leaked at 0x1fdff0
         This memory was allocated from:
               malloc         [rtlib.o]
               tds_alloc_locale [mem.c:481]
               tds_get_locale [locale.c:60]
               tds_alloc_context [mem.c:459]
               _SQLAllocEnv   [odbc.c:530]
               SQLAllocHandle [odbc.c:475]
               __connect_part_one [SQLConnect.c:1089]
               SQLConnect     [SQLConnect.c:3429]
               main           [odbc_unpure.o]
               _start         [crt1.o]