[Bug tools/26043] eu-addr2line debuginfo-path option with relative path doesn't find file:line information
mark at klomp dot org
Tue May 26 20:11:45 GMT 2020
--- Comment #4 from Mark Wielaard <mark at klomp dot org> ---
(In reply to devel.origin from comment #2)
> The debug info is in the .build-id/ dir: ../../demo/build/.build-id/ab/...
> Seems consistent with what the comment says. Should I make a real test
> example (the current is just a very good fictional one)?
If you could create a reproducer that would be great.
I think the issue is that the build-id searches simply skip relative
directories. Specifically this in libdwfl/dwfl_build_id_find_elf.c:
/* Only absolute directory names are useful to us. */
if (dir != '/')
While for find-debuginfo.c we have:
/* A relative path says to try a subdirectory of that name
in the main file's directory. */
I believe the idea is that lookups by build-id can be done without having a
(main) file. While file based lookup always starts with a (main) file, and
relative paths can be resolved based on the main file directory.
It might make sense to try build-id lookups using the same relative path logic
if we do have a (main) file to start with.
BTW. How did you end up with this setup?
Is there a development tool that creates a structure like that?
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