[Bug c++/46626] [4.6 Regression] simple use of virtual methods causes pure virtual method call in c++0x mode

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46626

--- Comment #4 from Zdenek Sojka <zsojka at seznam dot cz> 2010-12-08 00:43:03 
UTC ---
This seems to cause FAILs in libstdc++ testsuite with -O0, for example:
$ g++ 42819.ii -std=gnu++0x
$ ./a.out
terminate called after throwing an instance of 'std::system_error'
  what():  Unknown error 18446744073709551615
Aborted

(all failures I encountered are from 30_threads)