Question

I need to debug a certain set of commands each time i invoke gdb – so I decided to put them in my .gdbinit. Everything was fine , till i decided to use commands (to execute a certain set of gdb commands each time a certain brkpt is hit). My script looks is as follows:

define setup
   handle SIGTRAP noprint nostop
   br 'Class1::Fun1(void)'
   run
   br 'Class2::Run(void)'
   c
   br Function2
   commands 3
     return 0 
     c
   end
end

Problem is , whenever I execute them one by one , it behaves perfectly , but when i source the script and run setup , it behaves weirdly after the commands (does not do what was previously doing).

Can anyone help ?

Answer 1

You are probably not placing the commands on the breakpoint you think you are.

If I were you, I’d modify the script to the following:

define setup
   handle SIGTRAP noprint nostop
   br 'Class1::Fun1(void)'
   run
   br 'Class2::Run(void)'
   c
   br Function2
   commands
     return 0 
     c
   end
end

If no breakpoint target is given, commands associates with the most recent breakpoint. This way, no matter what other breakpoints you have in your gdb session, your commands will be associated with the breakpoint at Function2.