memory leak questions about c programming

Question

Will this function cause memory leak?

The function is :

double list(double *list2){
  double *list3=(double *)malloc(sizeof(double));
  some operations...
  return *list3;
}

update:

could this help?

int main(){

 operations...
 double list4;
 list4=list(&list4);
 free(&list4);

 return 0;
}

Answer 1

Yes, it does: it is returning a copy of the value of what is stored in the allocated memory, but the allocated memory itself is leaked (because the address has been "lost").