Re: One and a half bugs plus some hacks

["Andreas Hartmetz" <ahartmetz at gmail dot com>]

2008/5/8 Ian Lance Taylor <iant@google.com>:
> > 2008/5/7 Ian Lance Taylor <iant@google.com>:
>  >> "Andreas Hartmetz" <ahartmetz@gmail.com> writes:
>  >>
>  >>
>  >> > -gold aborts with an error message about "undefined symbol version
>  >>  > OPENSSL_0.9.8" (paraphrased) in one instance when linking against
>  >>  > openssl.
>  >>
>  >>  This one I don't understand.  Can you give me some more details about
>  >>  what is happening?
>
>  Andreas provided some additional details off-list--thanks!  I believe
>  the problem is that gold was not properly overriding the version when
>  it saw a normal definition of a symbol after seeing a definition of
>  the symbol in a shared library with a non-hidden version.
>
I didn't want to send the information off-list actually, I just hit
the reply button without thinking about it :)

>  In the case at hand I suspect this is happening due to an over-zealous
>  a version script, which does "global: *;".  This is not a good idea--a
>  version script should control symbol visibility, which means that it
>  should explicitly list the global symbols and not just make all
>  symbols global.  However, that is a valid version script, and in fact
>  gold did not handle it correctly.  Most of this patch is actually
>  making that work.
>
>  Once that worked, I could recreate the problem using gold.  The few
>  lines in resolve.cc fix it.
>
>  Andreas, as far as I know, at this point all the problem with building
>  KDE are fixed.  Please let me know if there are problems.  And thanks
>  for reporting them.
>
Thank you very much Ian - you fixed all the problems that I know of! Woohoo!