ROS2 compile a standalone node: undefined references to `std::__th​row_bad_ar​ray_new_le​ngth()'

Hi all,

I am trying to create a standalone node for ROS2 with a publisher (see schema below) and I am using the following tutorial to set up the model to generate the code:

but when I compile it, I obtain the following error

undefined reference to `std::__throw_bad_array_new_length()

and I don't find a way to fix (below the imag with the error). I also got the same error with the Simulink model used in the tutorial.

System info:

• OS: Ubuntu 22.04 LTS
• ROS2 version: Humble
• gcc version: 11.4.0

Answer 1

[Josh Chen]

Hi Federico,

Thanks for providing the system information. This error seems to be a compiler incompatible issue.

In R2023b version of MATLAB/Simulink, some internal packages were built with gcc-10. Hence, when compiling the Simulink model with gcc-11, you may see undefined reference errors.

This issue was resolved in the upcoming R2024b version, which uses gcc-12 to build those packages.

As a workaround for R2023b, you could consider installing gcc-10 on your machine so that the entire project uses the same gcc version during build process.

Best,

Josh

[federico ciresola]

Hi Josh Chen,

you were right, I changed the version of gcc on my system and I resolved the problem.

I leave here the small resume of how to change the version of gcc/g++ on Ubuntu 22.04 LTS:

# Install gcc-10 and g++--10
sudo apt install gcc-10
sudo apt install g++-10

# Remove all alternatives configuration
sudo update-alternatives --remove-all gcc 
sudo update-alternatives --remove-all g++ 

# Add alternatives configuration for gcc/g++ versions
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 10
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 11

sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 10
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-11 11
# Change the default gcc/g++ version
sudo update-alternatives --config gcc
sudo update-alternatives --config g++

# Check the gcc verion
gcc --version

# Add gCC/g++ configuration for colcon
echo "export CC=/usr/bin/gcc-10" >> ~/.bashrc
echo "export CXX=/usr/bin/g++-10" >> ~/.bashrc

source ~/.bashrc

#run matlab/simulink 

and in simulink I went to ROS tab, I opened Hardware settings>code generation and in the label Language standard inside the Target selection I choose C++10 (ISO):

[mehdi]

hi, thank you very much for your guide but i couldn't choose C++10(ISO) on the Language Standard bar

i can only see C++03 AND C++11

how to change it to C++10???!

[later]

Hi Josh, do you have any idea what should i do?!