YeeKal
linux

debug with gdb

YeeKal • •
"#linux"

dubug with ros

//edit cmakelist.txt
set (CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS}  -g ")
set (CMAKE_VERBOSE_MAKEFILE ON)
//catkin_make
catkin_make  -DCMAKE_BUILD_TYPE=Debug 
//launch
launch-prefix="xterm-egdb--args"
//rosrun
rosrun --prefix 'gdb -ex run --args' [package_name] [node_name]

gdb commands

In gdb the initial character of the command has the same function as th command word.

  • run: execute program
  • finish: quit the program
  • next/n: step over
  • step/s: step into
  • :
  • break :set break point at line number
  • continue: run until next breakpoint
  • print/p:
  • bt: 查看函数堆栈
  • list : list source code near line number
  • list func: list source code of the function
  • info <>: info locals,info f
  • frame i:
  • up: 向上移动n层
  • down: 向下移动n层
  • disassemble func: 查看汇编代码
  • set print object on/set print pretty on: default is off; its better to open.
  • set args 10 20 30 40 50:设置参数
  • gdb *array@length:查看数组值
  • p *ptr._M_ptr # 打印只能指针数据

cdgb:

- esc: switch to source window
- o: open a file
- space: set breakpoint in a line
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