[Bug c++/106974] g++ bug caused by r9-595-g955da5e5443724cb

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106974

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Code:

#include <vector>
#include <cstdio>

template <typename NumType>
struct __attribute__ ((__packed__)) Shard {
  NumType data[128]; 
};

template<typename NumType>
class TestVector {
 public:
  TestVector() {
      shard_index_.push_back(Shard<NumType>());
  }
  const NumType& operator[](int i) const {
      return shard_index_[0].data[0];
  }
private:
  std::vector<Shard<NumType>> shard_index_;
};

int main(){
    TestVector<unsigned int> vec;
    printf("%u\n",vec[0]);
    return 0;
}