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std::move causes segmentation fault in TF_DeleteSession () from /usr/local/lib/libtensorflow.so.2 #254

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@mkarlan

Description

@mkarlan

Moving cppflow::model causes segmentation fault on desctruction similar to#132,#154. Btw, this will happen to all default constructor implementations.

#include<cppflow/model.h>#include<iostream>// to run: ./example2 /path/to/modelclassModelInference{public:explicitModelInference(cppflow::model&& _model) : model{std::move(_model)} {}private:    cppflow::model model;};intmain(int,char* argv[]){const std::string modelPath{argv[1]};    ModelInference modelInference{cppflow::model{modelPath}};    std::cout <<"all ok exiting" << std::endl;return0;}

Please find the example to reproduce the problem atcppflow.zip

Gdb backtrace:

[New Thread 0x7ffea5ffb640 (LWP 16486)][Thread 0x7ffea5ffb640 (LWP 16486) exited]2023-11-28 13:42:00.067943: I tensorflow/cc/saved_model/loader.cc:215] Running initialization op on SavedModel bundle at path: ../model/2023-11-28 13:42:00.072693: I tensorflow/cc/saved_model/loader.cc:314] SavedModel load for tags { serve }; Status: success: OK. Took 339877 microseconds.all ok exitingThread 1 "example2" received signal SIGSEGV, Segmentation fault.0x00007fffced60a7d in TF_DeleteSession () from /usr/local/lib/libtensorflow.so.2(gdb) bt#0  0x00007fffced60a7d in TF_DeleteSession () from /usr/local/lib/libtensorflow.so.2#1  0x000055555555b2b7 in cppflow::model::model(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cppflow::model::TYPE)::{lambda(TF_Session*)#1}::operator()(TF_Session*) const ()#2  0x000055555555ecac in std::_Sp_counted_deleter<TF_Session*, cppflow::model::model(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cppflow::model::TYPE)::{lambda(TF_Session*)#1}, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>::_M_dispose() ()#3  0x000055555555b083 in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() ()#4  0x000055555555bd79 in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count() ()#5  0x000055555555b25e in std::__shared_ptr<TF_Session, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr() ()#6  0x000055555555b27e in std::shared_ptr<TF_Session>::~shared_ptr() ()#7  0x000055555555bb4e in cppflow::model::~model() ()#8  0x000055555555bbc2 in ModelInference::~ModelInference() ()#9  0x000055555555add7 in main ()(gdb) bt#0  0x00007fffced60a7d in TF_DeleteSession () from /usr/local/lib/libtensorflow.so.2#1  0x000055555555b2b7 in cppflow::model::model(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cppflow::model::TYPE)::{lambda(TF_Session*)#1}::operator()(TF_Session*) const ()#2  0x000055555555ecac in std::_Sp_counted_deleter<TF_Session*, cppflow::model::model(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cppflow::model::TYPE)::{lambda(TF_Session*)#1}, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>::_M_dispose() ()#3  0x000055555555b083 in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() ()#4  0x000055555555bd79 in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count() ()#5  0x000055555555b25e in std::__shared_ptr<TF_Session, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr() ()#6  0x000055555555b27e in std::shared_ptr<TF_Session>::~shared_ptr() ()#7  0x000055555555bb4e in cppflow::model::~model() ()#8  0x000055555555bbc2 in ModelInference::~ModelInference() ()#9  0x000055555555add7 in main ()

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