Getting 'ELF' when i printf scanner.source

Question

I don't know what I am doing wrong, I want to write the text into the scanner.source pointer

But when I print scanner.source I get 'ELF'. I don't know what is causing this.

Edit Listed below the main file and the commands I ran

main function

int main(int argc, char *argv[])
{
    if (argc > 2)
    {
        printf("Usage Jlox Script");
        return 64;
    }
    else if (argc == 2)
    {
        runFile(argv[0]);
    }
    else
    {
        runPrompt();
    }
}

runFile Function

void runFile(char *path)
{
    FILE *file = fopen(path, "r");
    if (file == NULL)
    {
        printf("file: not found");
        exit(65);
    }

    fseek(file, 0, SEEK_END);
    long fileSize = ftell(file);
    fseek(file, 0, SEEK_SET);
    scanner.source = malloc(sizeof(char) * (fileSize + 1));
    if(scanner.source == NULL){
        printf("error occurred allocating memory");
        fclose(file);
        exit(64);
    }
    size_t readFile = fread(scanner.source, sizeof(char), fileSize, file);
    fclose(file);
    if (readFile != fileSize)
    {
        printf("file closing here");
        fclose(file);
        exit(65);
    }
    scanner.source[fileSize] = '\0';
    printf("scanner source '%s'", scanner.source);
    run();
    if (hadError)
        exit(65);
}

text.txt

1 ()
2 **
3 ()
4 {};;

script ran

gcc -g  modifiedlox.c -o modifiedlox

./modifiedlox.text.txt

Answer 1

You wrote in comments:

in main I just call the runFile with the text file

But in fact no, that's not what the main() function later added to the question does. It passes argv[0] to runFile(), and argv[0] is normally the name of the executable itself, as given on the command line. And on your platform, that is indeed an ELF executable, as I speculated.

If you want to forward the program's first command-line argument to function runFile(), then that would be argv[1].

---

Incidentally, this sort of thing is exactly why we ask those who pose debugging questions to present a minimal, reproducible example. Although I'm a pretty good guesser, no one could answer this question with confidence until you presented a full enough picture of what the program was really doing.