[Bug ipa/63745] [4.9/5 Regression] mythtv build failure due to aggressive speculative devirtualization

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63745

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Created attachment 33888
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33888&action=edit
unreduced testcase