#define _BSD_SOURCE
#include <sys/mman.h>
#include <stdio.h>
#include <string.h>
 
int main( int argc, char **argv )
{
    char *p;
    char *buf = mmap( ( void * ) 0, 4096,
        PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED | MAP_ANON, -1, 0 );
    if (buf == MAP_FAILED) perror("mmap");
    printf( "buf: %p\n", buf );
    p = strncpy( buf, "string", strlen( "string" ) );
    printf( "p: %p\n", p );
    printf( "NULL: %p\n", NULL );
    return( 0 );
}
 

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