Re: Using __libdw_formptr from C++

[Petr Machata <pmachata at redhat dot com>]

Roland McGrath <roland@redhat.com> writes:

> It has indeed always been the plan that some C++ bits will be in the main
> libdw DSO.  At least the reading-only bits will be, and perhaps more.

Interesting.  I alway thought that elfutils are so much on the frugal
side that this would be frowned upon.

> We've just managed not to really need it yet and so have been able to put
> off figuring out how to handle the C++ symbols for symbol versioning.  I
> want to keep putting that off since the C++ ABIs are still far from being
> firm.
>
> Instead, I've added a temporary hack version set to export __libdw_formptr.
> You should now be able to use it directly in the c++/values.cc code.  (I
> wouldn't add a private wrapper method like you did, it doesn't seem to buy
> much.  If you need anything more than using it directly, you can use a
> static function in value.cc instead, I think.)

Thanks.  Yes, the wrapper was not really serving any purpose.  I've now
commited purely the fix (without the libdwP.h and .map shenanigans) to
the dwarf branch.

PM