[Bug c++/58678] [4.9 Regression] pykde4-4.11.2 link error (devirtualization too trigger happy)

[trippels at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58678

--- Comment #40 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
David, 

the Calligra link error from comment 36 and comment 31 are caused by
ConditionCommand.cpp.o. With -flto it contains:
    U _ZN8Calligra6Sheets5qHashERKNS0_10ConditionsE
Without -flto the undefined symbol is gone.
I'm currently reducing this issue.