Mismatch free() / delete / delete [C++] Post: 302984981

Sponsored Content

Operating Systems Linux Mismatch free() / delete / delete [C++] Post 302984981 by SA_Palani on Thursday 3rd of November 2016 10:53:37 AM

11-03-2016

Registered User

Mismatch free() / delete / delete [C++]

Dear All,

I got the valgrind report as below [c++]

Code:

Mismatch free() / delete / delete []
at 0x4006895: operator delete(void*) (vg_replace_malloc.c:480)
by 0x8EA6D11: corefunction.

I supect that it is expect me to write free() instead of delete p1.
Given the the code.

I have the structure.

Code:

struct Pack
{
    unsigned int A;
    unsigned int B;
    unsigned int c;
    unsigned int D;    
}
 
 
int corefunction()
{
 
 
    Pack *p1=new Pack;
    I filled the value for the p1 object.
    I called a virtual funcion by passing the p1 like this
    Send((void*)p1); //
 
 
    if(p1)
        delete p1;    // Here is the place where i have the doubt that wheher is it expecting to deallocate with free().
 
 
    return 0;
}    
 
bool Send(void* &get_SendData) 
{  
    sendNextLevel(get_SendData  )
}
     
char* sendNextLevel(void* data)
{
                dataLen = sizeof(PackedSysTime);
 
 
                    Pack* txData = NULL;
                    txData = (Pack*)data;
}

since we have converted void pointer to struct without new operator like c-style casting, does it expecting us to write free while we deallocate the memory

Thank you.

Last edited by Corona688; 11-03-2016 at 12:05 PM..

SA_Palani

View Public Profile for SA_Palani

Find all posts by SA_Palani

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Space free on tape /delete a single file on tape

Hi, I' using a sun solaris server, I would like to known if there is the possibility to control how many space is free on a tape and how I can delete a single file on a tape. Thanks DOMENICO

2. Shell Programming and Scripting

how to delete content in a file (delete content only)

Hi Friends I have a file called processLog.txt file processLog.txt --------------- echo "line starts "$LINE suppCode=${LINE:0:3} #gatewayArchive=`scp root@mrp-gateway:/usr/local/apache/data/PLAT/MIMUS/upload/PROD/archive/112042708173000.txt /home/krishnaveni/scripts/tempFolder` #echo...

3. Shell Programming and Scripting

How to delete this?

# netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 10.171.5.0 0.0.0.0 255.255.255.0 U 0 0 0 bond0 10.181.0.0 0.0.0.0 255.255.0.0 U 0 0 0 bond0 168.354.0.0 ...

4. Shell Programming and Scripting

AWK "delete" does not free memory?

In my awk script I have a big array, it can occupy up to 10 gigabytes of memory, but after I have deleted the array, the memory is not returned to the system? why's that? how to return the memory to the system?

5. Shell Programming and Scripting

Delete text between square brackets and also delete those square brackets using sed or awk

Hi All, I have a text file which looks like this: computer programming systems engineering I want to get rid of these square brackets and also the text that is inside these brackets. So that my final text file looks like this: computer programming systems engineering I am using...

6. Red Hat

Need Script to ZIP/SAVE & then DELETE Log file & DELETE ZIPS older than 12 months

ENVIROMENT Linux: Fedora Core release 1 (Yarrow) iPlanet: iPlanet-WebServer-Enterprise/6.0SP1 Log Path: /usr/iplanet/servers/https-company/logs I have iPlanet log rotation enabled rotating files on a daily basis. The rotated logs are NOT compressed & are taking up too much space. I...

7. Shell Programming and Scripting

Script needed to delete to the list of files in a directory based on last created & delete them

Hi My directory structure is as below. dir1, dir2, dir3 I have the list of files to be deleted in the below path as below. /staging/retain_for_2years/Cleanup/log $ ls -lrt total 0 drwxr-xr-x 2 nobody nobody 256 Mar 01 16:15 01-MAR-2015_SPDBS2 drwxr-xr-x 2 root ...

8. Shell Programming and Scripting

SFTP Shell Script Get & Delete && Upload & Delete

Hi All, Do you have any sample script, - auto get file from SFTP remote server and delete file in remove server after downloaded. - only download specify filename - auto upload file from local to SFTP remote server and delete local folder file after uploaded - only upload specify filename ...

9. Programming

Mismatched free() / delete / delete [] line no missing

Could you tell me the possibilities of the reason to get the Mismatched free() / delete / delete . I unable to see the line no in the valgrind report. it displays the function name. with that function name, I am not able to find where exactly the issue is there.I am getting the Mismatched free()...

10. UNIX for Advanced & Expert Users

Rsync with --delete but do not delete peer dirs on target

rsync with --delete won't honor the delete if the source is something/*. I want the delete to work, but not to delete directories on the target that are peer to the intended directory. For example, using these source and target file structures: Source on desktop: ~/ Money/ ...

LEARN ABOUT HPUX

delete_directory

delete directory(1m)													      delete directory(1m)

NAME

       delete directory - Deletes a directory

SYNOPSIS

       cdscp delete directory directory-name

ARGUMENTS

       The full name of the directory.

DESCRIPTION

       The  delete  directory  command	deletes a directory.  The directory cannot contain any object entries, soft links, or child pointers.  The
       master replica must be the only remaining replica in the cell.  Use the delete replica command if you need to remove read-only replicas.

   Privilege Required
       You must have delete permission to the directory and write permission to the clearinghouse that stores the master replica of the directory.
       The  server  principal  needs  administer  permission  to the parent directory or delete permission to the child pointer that points to the
       directory you intend to delete.

NOTE

       This command is replaced at Revision 1.1 by the dcecp command and may not be provided in future releases of DCE.

EXAMPLE

       The following command deletes the directory /.:/eng from the namespace: cdscp> delete directory /.:/eng

RELATED INFORMATION

       Commands: create directory(1m), delete replica(1m), list directory(1m), set directory(1m), set directory to skulk(1m), show directory(1m)

															      delete directory(1m)

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Space free on tape /delete a single file on tape

Discussion started by: Minguccio75

2. Shell Programming and Scripting

how to delete content in a file (delete content only)

Discussion started by: kittusri9

3. Shell Programming and Scripting

How to delete this?

Discussion started by: kenshinhimura

4. Shell Programming and Scripting

AWK "delete" does not free memory?

Discussion started by: kevintse