lifetime-9 test FAIL

I am lost on that one.

entering SymbolFactory::enter_scope(ClassSpec)
leaving SymbolFactory::enter_scope(ClassSpec)
entering SymbolFactory::declare(Declaration *)
 entering Scope::declare
  [1]B
 leaving Scope::declare
leaving SymbolFactory::declare(Declaration *)
entering SymbolFactory::declare(Declaration *)
 entering Scope::declare
  [2]~B
 leaving Scope::declare
leaving SymbolFactory::declare(Declaration *)
entering SymbolFactory::leave_scope
leaving SymbolFactory::leave_scope
entering SymbolFactory::declare(ClassSpec *)
 entering Scope::find
  [1]B
 leaving Scope::find
 entering Scope::declare
  [1]B
 leaving Scope::declare
leaving SymbolFactory::declare(ClassSpec *)
entering SymbolFactory::declare(Declaration *)
leaving SymbolFactory::declare(Declaration *)
entering SymbolFactory::declare(Declaration *)
 entering Scope::declare
  [1]b
 leaving Scope::declare
leaving SymbolFactory::declare(Declaration *)
entering SymbolFactory::enter_scope(Node)
leaving SymbolFactory::enter_scope(Node)
entering SymbolFactory::leave_scope
leaving SymbolFactory::leave_scope
entering SymbolFactory::enter_scope(FunctionDefinition)
leaving SymbolFactory::enter_scope(FunctionDefinition)
entering SymbolFactory::leave_scope
leaving SymbolFactory::leave_scope
entering SymbolFactory::declare(Declaration *)
 entering Scope::declare
  [1]h
 leaving Scope::declare
leaving SymbolFactory::declare(Declaration *)
./Cxx/bin/SymbolLookup: symbol lookup error: ./Cxx/bin/SymbolLookup:
undefined symbol: _ZN8Synopsis12SymbolLookup6WalkerC2 EPNS0_5ScopeE

$ c++filt _ZN8Synopsis12SymbolLookup6WalkerC2EPNS0_5ScopeE
Synopsis::SymbolLookup::Walker::Walker(Synopsis::SymbolLookup::Scope*)

why does it not found the thing ?