Cee's Funposts - Detour Points
ceesstuff.github.io

Hi, has anybody of you ever seen a feature as described in the post in your environment?

Thank you

Update: As some readers appear to have skimmed the text, please feel free to point out possible accessibility issues, poor choices of words, etc.

  • bad_alloc@feddit.deEnglish
    2·
    1 year ago

    Turns out it exists in gdb, although in a limited scope!

    #include <iostream>

int main() {
  int a = 0;
  std::cout << "before: " << a << std::endl;
  a += 1;
  std::cout << "after: " << a << std::endl;
  return 0;
}

    Compile with g++ -g and run gdb a.out

    (gdb) run
before: 0
after: 1
[Inferior 1 (process 10976) exited normally]
(gdb) break 1
Breakpoint 1 at 0x5555555551d5: file main.cpp, line 6.
(gdb) run
Breakpoint 1, main () at main.cpp:6
6	  int a = 0;
(gdb) jump +3
Continuing at 0x55555555521b.
after: 0
[Inferior 1 (process 10979) exited normally]

    See here for documentation

    • zygo_histo_morpheus@programming.devEnglish
      4·
      1 year ago

      Many debuggers have a set next statement kind type of functionality, but with gdb you can script it so that it performs the jump automatically, like the article suggests:

      break 1
commands
jump +3
end
      • TheCee@programming.devOPEnglish
        2·
        1 year ago

        That’s pretty cool. I always wondered why gdb has a scripting interface, now I’m curious what other cool user scripts one can do through it.