# Pastebin GubDCCNh
#include <stdlib.h>
#include <stdio.h>

///#include <gnu/libc-version.h>




void this_fails() {
    char *res = realpath("/home/sascha", NULL);

    // res = realpath("/home/sascha", (char*) NULL);

    printf("res: %s\n", res);
}


void this_works() {
    //char buf[PATH_MAX+1];
    char buf[4096+1];
    char *res = realpath("/home/sascha", buf);

    printf("res: %s\n", res);
    printf("buf: %s\n", buf);
}

int main(int argc, char *argv[]) {

    char *env = getenv("LD_PRELOAD");
    printf("LD_PRELOAD: %s\n", env);
    
    //printf("glibc version: %s\n", gnu_get_libc_version());
    
    this_works();

    this_fails();

}