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#include <sys/mman.h>
#include <stdlib.h>
#include <unistd.h>
#include <err.h>
int
main(int argc, char **argv)
{
int stack = 0;
void *heap = NULL;
void *mapping = NULL;
if ((heap = malloc(10)) == NULL)
err(1, "couldn't allocate");
if ((mapping = mmap((caddr_t)0, 10, (PROT_READ | PROT_WRITE),
MAP_ANON|MAP_PRIVATE, -1, 0)) == (void*)-1)
err(1, "couldn't map");
printf(" stack: 0x%p\n", &stack);
printf(" heap: 0x%p\n", heap);
printf("mapping: 0x%p\n", mapping);
printf(" text: 0x%p\n", &main);
return (0);
}
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