How to debug (set a breakpoint) into the unittest executable?

[Andy Valencia]

On Tuesday, 2 September 2025 at 14:03:44 UTC, felixfxu wrote:

> Then I realized that the unittest executable file is also 
> generated in the work folder after I run "dub test -b debug". 
> Then I would like to debug into that unittest executable file 
> just as I did previously to other valid dlang executable files.

By far the easiest way I've found to set breakpoints with gdb is 
by line number:

```
   b <source file.d>:<line #>
```

That works quite reliably, even when the maze of demangling 
doesn't quite get me there.  And yes, I have used it on -unittest 
compilations.  I do not use dub, so if it's adding wrinkles, I 
can't help you there.

Andy