gdb cheatsheet

#1 tip:
gdb –tui # starts an upper screen showing a moving marker against the current line. If you started gdb without “–tui”, you can still use Ctrl-X Ctrl-A.

#2 tip:
After hitting a breakpoint, you can use q(n) i.e. q(next) and just Enter to repeat previous q(n).

———-
I found it easier to use q(break filename:lineno) # Filename doesn’t need full path J

Other essential commands

  • b myFunc
  • b myClass::myFunc
  • info break # or info b to list all breakpoints
  • · bt # or backtrace
  • · frame 0
  • · list
  • · p for print
  • · info variables
  • · info locals
  • · info args
  • · n # for step-over
  • · s # for step-in
  • · fin # for step-out
  • ctrl-L toclear gdb command screen

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