第九章0.2执行出现Segmentation fault (core dumped)错误

[jiujiuone]

在程序执行到string dataset_dir = myslam::Config::get ( "dataset_dir" );时出现Segmentation fault (core dumped)错误
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6bfc94a in cv::FileNode::ptr() [clone .localalias.329] ()
from /usr/local/lib/libopencv_core.so.4.1
(gdb) where
#0 0x00007ffff6bfc94a in cv::FileNode::ptr() [clone .localalias.329] ()
from /usr/local/lib/libopencv_core.so.4.1
#1 0x00007ffff6bfca39 in cv::FileNode::type() const ()
from /usr/local/lib/libopencv_core.so.4.1
#2 0x00007ffff6bfca99 in cv::FileNode::isMap() const ()
from /usr/local/lib/libopencv_core.so.4.1
#3 0x00007ffff6c01db1 in cv::FileNode::operator[](std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&) const ()
from /usr/local/lib/libopencv_core.so.4.1
#4 0x00007ffff6c01f61 in cv::FileStorage::operator[](std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&) const ()
from /usr/local/lib/libopencv_core.so.4.1
#5 0x0000555555554fa9 in main ()
怀疑和config.h里的模板get函数有关系，却不知道怎么解。请大神指教。

[cgllv]

在程序执行到string dataset_dir = myslam::Config::get ( "dataset_dir" );时出现Segmentation fault (core dumped)错误
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6bfc94a in cv::FileNode::ptr() [clone .localalias.329] ()
from /usr/local/lib/libopencv_core.so.4.1
(gdb) where
#0 0x00007ffff6bfc94a in cv::FileNode::ptr() [clone .localalias.329] ()
from /usr/local/lib/libopencv_core.so.4.1
#1 0x00007ffff6bfca39 in cv::FileNode::type() const ()
from /usr/local/lib/libopencv_core.so.4.1
#2 0x00007ffff6bfca99 in cv::FileNode::isMap() const ()
from /usr/local/lib/libopencv_core.so.4.1
#3 0x00007ffff6c01db1 in cv::FileNode::operator[](std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&) const ()
from /usr/local/lib/libopencv_core.so.4.1
#4 0x00007ffff6c01f61 in cv::FileStorage::operator[](std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&) const ()
from /usr/local/lib/libopencv_core.so.4.1
#5 0x0000555555554fa9 in main ()
怀疑和config.h里的模板get函数有关系，却不知道怎么解。请大神指教。

I meet the problem like yours. it seems like yaml file read failed. but I can‘t figure out why. Have you solved the problem? I runn in windows environment.

[mitsurukato24]

I also met the error from myslam::Config::get().
I'm using Visual Studio 2015 and OpenCV 4.3.

I changed the code of the function Config::setParameterFile(const std::string& filename) in config.cpp.

// config_->file_ = cv::FileStorage( filename.c_str(), cv::FileStorage::READ );
config_->file_.open(filename.c_str(), cv::FileStorage::READ);

After I changed this, Config::get() worked properly in my environment so can you try this?

[YinpeiDai]

Thank you so much @mitsurukato24 , it works