[Bug libstdc++/42734] trivial use of std::thread fails with "pure virtual method called"

[postmaster@conky-be.bounceio.net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42734

--- Comment #53 from postmaster@conky-be.bounceio.net ---
Created attachment 45108
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45108&action=edit
attachment-117920-1.eml