#include <stdio.h>  
#include <stdlib.h>  
   
   
   
void *  
debug_malloc(size_t size, const char *file, int line, const char *func)  
{  
        void *p;  
   
        p = malloc(size);  
        printf("%s:%d:%s:malloc(%ld): p=0x%lx\n",  
            file, line, func, size, (unsigned long)p);  
        return p;  
}  
   
#define malloc(s) debug_malloc(s, __FILE__, __LINE__, __func__)  
#define free(p)  do {                                                   \  
        printf("%s:%d:%s:free(0x%lx)\n", __FILE__, __LINE__,            \  
            __func__, (unsigned long)p);                                \  
        free(p);                                                        \  
} while (0)  
   
int  
main(int argc, char *argv[])  
{  
        char *p;  
        p = malloc(1024);  
        free(p);  
        return 0;  
}  
</stdlib.h></stdio.h>