VerStr (this=<optimized out>) at ../build/include/apt-pkg/cacheiterators.h:207
pkgDepCache::CheckDep (this=0xaaeb568, Dep=..., Type=0, Res=...) at depcache.cc:355
CheckDep (Type=0, Dep=<optimized out>, this=0xaaeb568) at ../build/include/apt-pkg/depcache.h:321
pkgDepCache::DependencyState (this=0xaaeb568, D=...) at depcache.cc:610
pkgDepCache::Update (this=0xaaeb568, Prog=0xbf9b7684) at depcache.cc:683