dev-cpp-users

[Dev-C++] deleting an array properly?

[Dane E. <da...@de...>]

Hi,

Thank you  in advance for any help you can offer.

I am trying to delete an array of pointer to objects and its throwing  
an error, which I cant figure out how to solve.
The message is:
--Emp_app_C(1024) malloc: ***  Deallocation of a pointer not  
malloced: 0xbffff9f4; This could be a double free(), or free() called  
with the middle of an allocated block; Try setting environment  
variable ------MallocHelp to see tools to help debug

First I build my array of pointers to objects:
--employee* empList[MAX_EMPLOYEES];

After populating the array, I tried to delete it using these 2  
different statements:

1. delete[] empList;
2. delete empList;

Please can someone show me the correct statement that would delete  
this array properly?

Best regards,

Dane Ensign

Re: [Dev-C++] deleting an array properly?

[Michal M. <mi...@mo...>]

Dane Ensign wrote:
> employee* empList[MAX_EMPLOYEES];

for (int i=0; i<MAX_EMPLOYEES; i++) {
   delete empList[i];
}

-- 
Regards,
     Michal

ICQ# 175762750

Re: [Dev-C++] deleting an array properly?

[Alfred P. R. <al...@ya...>]

Hi Dane,
 
Provided that you allocated the variable in the form of, lets say:
 
double **variable;
variable = new double[256];
 
then the correct way to delete would be:
 
delete [] variable;
 
However if you used malloc, delete will not work.  Try not to use malloc and free if possible in C++ code.  If you did use malloc, delete is not the proper keyword, free would be the proper keyword.  See http://www.cppreference.com/.

Dane Ensign <da...@de...> wrote:
Hi,

Thank you in advance for any help you can offer.

I am trying to delete an array of pointer to objects and its throwing 
an error, which I cant figure out how to solve.
The message is:
--Emp_app_C(1024) malloc: *** Deallocation of a pointer not 
malloced: 0xbffff9f4; This could be a double free(), or free() called 
with the middle of an allocated block; Try setting environment 
variable ------MallocHelp to see tools to help debug

First I build my array of pointers to objects:
--employee* empList[MAX_EMPLOYEES];

After populating the array, I tried to delete it using these 2 
different statements:

1. delete[] empList;
2. delete empList;

Please can someone show me the correct statement that would delete 
this array properly?

Best regards,

Dane Ensign




Alfred P. Reaud