Re: [0/5] handle multiple .debug_types sections

[Roland McGrath <roland at hack dot frob dot com>]

> There may not be a link time -- you can "pahole something.o".  If the .o
> was made with -fdebug-types-section, then it may have multiple such
> sections.  This is just a consequence of the use of different comdat
> sections for each type unit.

In general we've said that libdw is not meant for generic ET_REL files.
The exception is .ko files, which are ET_REL but are the output of ld -r so
section merging has already been done.  I guess that will leave multiple
sections in a COMDAT situation, but those don't appear in .ko files.

I haven't looked at your changes yet.  But I think we made this simplifying
assumption (and stated it up front) for good reason.  So it may take some
convincing for me to think we should complicate the libdw internals a lot
to support this new kind of usage.


Thanks,
Roland