cpp_debug.md

Debugging C++

Debug C++ is tricky and binary protocol bug is hard to locate without debugging support, but setup debugging support for bazel project is not easy.

Apache Fory™ include an out-of-box launch.json/tasks.json config in .vscode directory for c++ debugging.

Just open the fory root directory in vscode, then open a test file such as src/fory/row/row_test.cc, enter F5, then you can debug the c++ code line by line, watch variables, add breakpoints in vscode just like java/python debugging.

Notes

• For Macos: Install CodeLLDB vscode plugin
• For Linux:
  • install gdb for fedora/centos by sudo yum install -y gdb
  • install gdb for fedora/centos by sudo apt-get install gdb
• If debugging doesn't work, please select correct debug/run options:
• Debug will jump to source files in bazel generated directory, we need to return raw files in source tree for debugging again: