#include <torch/torch.h>
#include <iostream>

int main(){
	std::stringstream stream;

	std::cout << "tensor1:" << std::endl;
	torch::Tensor tensor1 = torch::eye(3);
	torch::save(tensor1, stream);
	std::cout << tensor1 << std::endl;

	std::cout << "tensor2:" << std::endl;
	torch::Tensor tensor2;
	torch::load(tensor2, stream);
	std::cout << tensor2 << std::endl;
}

this is the code that i run. btw it works fine using this CMakeList:
cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
project(dcgan)

find_package(Torch REQUIRED)

add_executable(dcgan dcgan.cpp)
target_link_libraries(dcgan "${TORCH_LIBRARIES}")
set_property(TARGET dcgan PROPERTY CXX_STANDARD 14)

and gives this output:
tensor1:
 1  0  0
 0  1  0
 0  0  1
[ CPUFloatType{3,3} ]
tensor2:
 1  0  0
 0  1  0
 0  0  1
[ CPUFloatType{3,3} ]

However within the project that I’m working, which has multiple CMakeLists in a way that’s too advanced for me, it gives me this:
tensor1:
 1  0  0
 0  1  0
 0  0  1
[ CPUFloatType{3,3} ]
tensor2:
Segmentation fault (core dumped)

and here is the backtrace you wanted:
GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./src/algos/simple...done.
(gdb) run
Starting program: /home/baris/sdms/build/src/algos/simple 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
tensor1:
 1  0  0
 0  1  0
 0  0  1
[ CPUFloatType{3,3} ]
tensor2:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6a1b2cf in std::__detail::_Compiler<std::__cxx11::regex_traits<char> >::_Compiler(char const*, char const*, std::locale const&, std::regex_constants::syntax_option_type) ()
   from /opt/libtorch/lib/libc10.so
(gdb) bt
#0  0x00007ffff6a1b2cf in std::__detail::_Compiler<std::__cxx11::regex_traits<char> >::_Compiler(char const*, char const*, std::locale const&, std::regex_constants::syntax_option_type)
    () from /opt/libtorch/lib/libc10.so
#1  0x00007ffff6a09fa6 in c10::Device::Device(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () from /opt/libtorch/lib/libc10.so
#2  0x00007fffe916493d in torch::jit::Unpickler::readInstruction() () from /opt/libtorch/lib/libtorch_cpu.so
#3  0x00007fffe9166840 in torch::jit::Unpickler::run() () from /opt/libtorch/lib/libtorch_cpu.so
#4  0x00007fffe9166df1 in torch::jit::Unpickler::parse_ivalue() () from /opt/libtorch/lib/libtorch_cpu.so
#5  0x00007fffe910acc2 in torch::jit::readArchiveAndTensors(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, c10::optional<std::function<c10::StrongTypePtr (c10::QualifiedName const&)> >, c10::optional<std::function<c10::intrusive_ptr<c10::ivalue::Object, c10::detail::intrusive_target_default_null_type<c10::ivalue::Object> > (c10::StrongTypePtr, c10::IValue)> >, c10::optional<c10::Device>, caffe2::serialize::PyTorchStreamReader&) () from /opt/libtorch/lib/libtorch_cpu.so
#6  0x00007fffe910afdd in torch::jit::(anonymous namespace)::ScriptModuleDeserializer::readArchive(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) [clone .constprop.789] () from /opt/libtorch/lib/libtorch_cpu.so
#7  0x00007fffe910d905 in torch::jit::(anonymous namespace)::ScriptModuleDeserializer::deserialize(c10::optional<c10::Device>, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >&) [clone .constprop.788] ()
   from /opt/libtorch/lib/libtorch_cpu.so
#8  0x00007fffe910ded9 in torch::jit::load(std::unique_ptr<caffe2::serialize::ReadAdapterInterface, std::default_delete<caffe2::serialize::ReadAdapterInterface> >, c10::optional<c10::Device>, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, std::__cxx11::basic_string<char, std::char_traits<char>, std::all---Type <return> to continue, or q <return> to quit---q