Is this a bug in gcc operator precedence?

Question

The following code

#include <iostream>

using namespace std;


int change(int *x){
    *x = 4;
    return 0;
}

int main(){
    int z = 10;
    cout << change(&z) << " * " << z << endl; 

    return 0;
}

produces the following output:

0 * 10

but I expect:

0 * 4

and gdb shows that "z = 4" after calling "change" function.