QString in a struct

[Publicnamer]

I have some code that allocates an array of structs, and in each string is a QString (not a QString*).
I find that when I delete that array, I get an error: malloc is trying to do a bad free.
Is it not allowed to put a QString in a struct or array of structs?

struct foo {
  QString s;
  int i;
};
int main() {
  struct foo *f = new struct foo [100];
   delete f; // error
}

[mpergand]

try delete[] f;

warning: 'delete' applied to a pointer that was allocated with 'new[]'; did you mean 'delete[]'? [-Wmismatched-new-delete]
delete f; // error