The Source tab of the default configuration has a root item "Default",
which has elements "Absolute file path" which has no children, and the
project, with all its folders. It looks fine to me, and I aldo tried
removing all Debug configurations and have a new one created for me. I do
not use any subprojects.
I tried adding only the project or only the absolute filesystem location
as source in the Debug Configuration. The same error happens.
For fun, I added the project tree same path several times, as workspace,
workspace project, filesystem folder, workspace folder. No change.
I removed all the source path, then the breakpoints did not even trigger
any gdb action.
I tried creating a new project of the same name, copied the project files
(except .project and .cproject) into it, and still nothing.
There ought to be a logical explanation to this, aren't there gdb commands
that I could use somehow to check where it looks for files or something?