dape-mode + cpp not able to reach breakpoints

[gpetrini]

I confirm that...

• I searched the FAQ, issue tracker, discussions board, documentation, and wiki, and did not find an answer to my question.

• Any discussions with or conclusions derived from the use of LLMs will be omitted from my question.

What is your question?

Hi everyone,

I have a question about how to use dap-mode in doom-emacs for cpp. As a context, I am not a programmer and I am using a project that relies on cpp (named LSD). In order to debug my code, I use gdb as follows:

gdb ./lsdDebug

lsdDebug is the executable compiled using debugger flags. Inside gdb, I set breakpoints for my source files (.h) and run as follows:

run -f ./path/to/configfile

And everything works as expected. However, I would like to be able to run it inside Emacs and be able to navigate through the source code. As I am using doom-emacs, I enabled the debugger module in my init file without the +lsp flag.

For the adapter, I am using the following configuration:

After that, I can toggle a breakpoint and start to run the program and the simulation starts. However, when it hits the breakpoint, I get the following:

The program being debugged has been started already.

Start it from the beginning? (y or n) \[answered Y; input not from terminal\]

Starting program: /home/gpetrini/LSD/Work/PhD/AB-SFC-SSM-Dot-Com/lsdDebug -f analysis/configs/New.lsd

\[Thread debugging using libthread\_db enabled\]

Using host libthread\_db library "/lib/x86\_64-linux-gnu/libthread\_db.so.1".

\* Exit code 0 \*

\* Session terminated \*

Since I am not a programmer, I am not sure if the issue is related with doom, dape, or with my code. As I can use gdb normally, I am assuming that I am setting the dap configuration wrong, but I have not clue what could be wrong. In addition, I have no idea if I should open an issue on doom or on dape-mode repositories.

Does anyone have a clue how to debug my debugger issue? :)

System information

https://pastebin.com/GQcq9KUF

[wchmb]

Just my 2 cents, you set a break at main(), you "r"un your program and when gdb hits the break you press again "r"un instead of "c"ontinue.
You're not the first

[gpetrini]

Thank you for your response!

However, even when I hit c instead of r, I got "No stopped debug connection".

Also, I need to specify the arguments to the program ("-f ..."). If I run with those arguments from the begining, it runs the simulation without allowing me to set breakpoints. If I set the breakpoints beforehand, it does not allows me to run the simulation.

In order to avoid flooding doom, do you think this is a cpp/dape-related problem instead of doom?

[wchmb]

You're welcome.

This is not the way of passing arguments, use :args (and do not blindly run tools, first ask the manual https://sourceware.org/gdb/current/onlinedocs/gdb.html/Debugger-Adapter-Protocol.html).
Definitely this is not a doom/gdb/dape problem but missconfiguration
Good luck with you PhD