[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 #41 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Created attachment 32364
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32364&action=edit
reduced calligra testcase

markus@x4 tmp % g++ -flto -c -O2 test.ii && nm test.o | grep
_ZN8Calligra6Sheets5qHashERKNS0_10ConditionsE
         U _ZN8Calligra6Sheets5qHashERKNS0_10ConditionsE
markus@x4 tmp % g++ -c -O2 test.ii && nm test.o | grep
_ZN8Calligra6Sheets5qHashERKNS0_10ConditionsE
markus@x4 tmp % clang++ -flto -c -O2 test.ii && nm test.o | grep
_ZN8Calligra6Sheets5qHashERKNS0_10ConditionsE
markus@x4 tmp %