Understanding 'double free or corruption' error

Question

I am calling a C++ application from the python script (OS Ubuntu 14.04) like this:

import sys, subprocess
run = subprocess.Popen([\'app         


        

Answer 1

Double free is exactly what it means :

int *a = new int;
delete a;
delete a;

For corruption something like :

int *a = new int[10];
a++;
delete a;

This message is generated by glibc when an app request to free some memory that was already freed, or the address does not correspond to an address obtained at allocation time.