[ECOS] Question about empty C++delete functions

[Joris Roussel <joris dot roussel at inventel dot fr>]

Dear all,

I have a question about the "Provide empty C++ delete functions" 
(CYGFUN_INFRA_EMPTY_DELETE_FUNCTIONS) option of eCos configuration.

If I keep it to its default value (enabled state), the memory allocated 
after a class object new is never freed when the class object is deleted.

So, newing and deleting several objects will fill the target memory and 
finally bring to a target crash.

As I haven't really understood the explanation given in the Configuration 
Tool, could someone tell me more about this option utility ?


Here is the test code :

class classe_test
{
public:
  classe_test();
  ~classe_test();
  int value ;
};

classe_test::classe_test()
{
  value = 0 ;
}

classe_test::~classe_test()
{
}

int main()
{
  int i ;

  for (i=0;i<10;i++)
  {
    classe_test *c = new classe_test ;
    printf("c = 0x%x\n\r",c);
    delete c;
  }
}

The output is :
c = 0xc52808
c = 0xc52818
c = 0xc52828
c = 0xc52838
c = 0xc52848
c = 0xc52858
c = 0xc52868
c = 0xc52878
c = 0xc52888
c = 0xc52898


You can see the not-freed memory corresponding to each object (4 bytes).

Thanks in advance for your help,


Joris



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