How did you install deal.II? If you installed it and then deleted the
source files for deal.II, then necessarily you can't go into them in a
debugger because the executable only records file and line numbers for
each statement you are trying to execute, but there is no way to look up
what the code looked like for these lines.
So if you want to debug into deal.II classes, you need to have access to
the original source files. That means not deleting the directory in
which deal.II was unpacked and from which it was compiled. I suspect
that at least some of the ways in which we distribute deal.II (via
package managers, spack, and maybe candi) do not preserve the source files.
Best
W.
--
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Wolfgang Bangerth email:
bang...@colostate.edu
www:
http://www.math.colostate.edu/~bangerth/