c++/7964: [mainline regression] ICE in build_base_path

[Reichelt]

Hi,

here's a slightly cleaned-up testcase:

-------------------------snip here--------------------------
struct A
{
  virtual void foo() const;
};

struct B : virtual A {};

template<typename T> struct C : B
{
  void bar() const { B::foo(); }
};

template struct C<int>;
-------------------------snip here--------------------------

Greetings,
Volker

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7964