in the c progamming language.

I have a function in the form:

int function (struct TreeNode **asdf, pid_t pid){

when I try to allocate data to the node, I get a segmentation fault. I did this

(*asdf)->name = "test";

when I called the function I had initialized the node as such:

struct TreeNode *root;

function(&root, 111);

What am I doing wrong, and how can I edit the struct values inside the function