Assignment operators crashes

                                                                                                    
                                                                                                    
1  std::_Atomic_integral<int,4>::operator++                 atomic              1587 0x7ffe47b07279 
2  QAtomicOps<int>::ref<int>                                qatomic_cxx11.h     281  0x7ffe47b03c74 
3  QBasicAtomicInteger<int>::ref                            qbasicatomic.h      101  0x7ffe47b0d687 
4  QArrayData::ref                                          qarraydata.h        88   0x7ffe47b0d6b7 
5  QArrayDataPointer<char16_t>::ref                         qarraydatapointer.h 325  0x7ffe47b0d652 
6  QArrayDataPointer<char16_t>::QArrayDataPointer<char16_t> qarraydatapointer.h 72   0x7ffe47b040cd 
7  QArrayDataPointer<char16_t>::operator=                   qarraydatapointer.h 93   0x7ffe47dea864 
8  QString::operator=                                       qstring.cpp         2825 0x7ffe47e4d891 
9  ObjectInHash::operator=                                  qhash                    0x7ff6f12d71b2 
10 Hash::fillHash                                           main.cpp            53   0x7ff6f12d3439 
11 Hash::Hash                                               main.cpp            33   0x7ff6f12d6abf 
12 main                                                     main.cpp            88   0x7ff6f12d5251 
13 invoke_main                                              exe_common.inl      79   0x7ff6f12dc479 
14 __scrt_common_main_seh                                   exe_common.inl      288  0x7ff6f12dc35e 
15 __scrt_common_main                                       exe_common.inl      331  0x7ff6f12dc21e 
16 mainCRTStartup                                           exe_main.cpp        17   0x7ff6f12dc50e 
17 BaseThreadInitThunk                                      KERNEL32                 0x7ffea5887034 
18 RtlUserThreadStart                                       ntdll                    0x7ffea5c62651