Thread: Weird struct pointer return

Code:

void function(struct LoginInfo *login_info)
{   
   strcpy(login_info->RouterAddress, "1.0.0.1");
   strcpy(login_info->Password, "hello world");
}

main()
{
   struct LoginInfo {
      char RouterAddress[30], Login[30], Password[30];
   } login_info;

   strcpy(login_info.Login, "root");
   function(&login_info);
}

The weird thing that the returned Login is not the one I sent to the function ("root")... it's some just some value, is that normal???


Thank you.

Code:

gcc -W -Wall -ansi -pedantic -O2 hello.c -lefence
hello.c:5: warning: `struct LoginInfo' declared inside parameter list
hello.c:5: warning: its scope is only this definition or declaration, which is probably not what you want
hello.c: In function `function':
hello.c:7: warning: implicit declaration of function `strcpy'
hello.c:7: dereferencing pointer to incomplete type
hello.c:8: dereferencing pointer to incomplete type
hello.c: At top level:
hello.c:12: warning: return type defaults to `int'
hello.c: In function `main':
hello.c:18: warning: passing arg 1 of `function' from incompatible pointer type

Make your struct visible to both things - at the moment, it's local to main, and the struct in the function prototype is actually a different struct.

yeah i see your point, but it's not the original code...
in the real code the struct is known by the function.

anyway, I've found the problem, I had a small overflow in the RouterAddress, so the Login got messed up. Sorry for this really stupid thread.