deleting non-constructed objects

Hi,

If I try to delete the malloced pointer what can be expected
behaviour?

The code pasted along with works may be because the struct J is a POD
but don't know what are the various implications of the same.

#include <memory>

struct J
{
     int i;
     int j;
};

int main()
{
     J* jj = (J*)malloc(sizeof(J));
     delete jj;

     return 0;
}

Thanks,
Sarang

-- 
      [ See http://www.gotw.ca/resources/clcm.htm
for info about ]
      [ comp.lang.c++.moderated.    First time posters: Do this! ]