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[Bug gold/20610] Linking against Oracle OCCI fails

From: ostash at ostash dot kiev.ua
Subject: [Bug gold/20610] Linking against Oracle OCCI fails
Date: Thu, 15 Sep 2016 08:30:50 +0000


--- Comment #1 from Viktor Ostashevskyi <ostash at ostash dot kiev.ua> ---
Bisected to:

b60ecbc6ddeaf7af8f2515841b58035f0d4d2db7 is the first bad commit
commit b60ecbc6ddeaf7af8f2515841b58035f0d4d2db7
Author: Cary Coutant <address@hidden>
Date:   Wed Mar 30 19:14:16 2016 -0700

    Don't override definition a shared object by one in a later shared object.

    In PR 16979, a reference to malloc is being resolved to an unversioned
    reference in libmalloc.so. When linked with --as-needed, however, the
    dynamic table does not list libmalloc.so as a DT_NEEDED library.

    If we have a reference to an unversioned symbol in a shared object,
    and we later see a versioned definition in another shared object, we
    were overriding the first definition with the second in the process of
    defining the default version. As a result, we no longer think that the
    first shared object was actually needed to resolve any symbols, and we
    don't list it as a DT_NEEDED library.

    This patch fixes the problem by treating the two definitions as separate
    symbols, so the second definition does not override the first.

    2016-03-30  Cary Coutant  <address@hidden>

            PR gold/16979
            * symtab.cc (Symbol_table::define_default_version): Check for case
            where symbols are both in different shared objects.

:040000 040000 ecee23ccab1035329fbc054eb10e94ff42358124
39b15f317aadad7a199a5d60abfbd795bed5fe22 M      gold

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