layout: global title: Debugging C++ license: | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

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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: