* apt-pkg/depcache.cc:

[apt.git] / apt-pkg / cacheiterators.h

diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index 62d2695ddcf085723e663105d9c980b7480431eb..2b326bd65884d995133b2158f04848061ab839c0 100644 (file)
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -107,7 +107,7 @@ class pkgCache::VerIterator
    // Iteration
    void operator ++(int) {if (Ver != Owner->VerP) Ver = Owner->VerP + Ver->NextVer;};
    inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Ver == Owner->VerP?true:false;};
+   inline bool end() const {return Owner == NULL || (Ver == Owner->VerP?true:false);};
    inline void operator =(const VerIterator &B) {Ver = B.Ver; Owner = B.Owner;};
    
    // Comparison
@@ -222,7 +222,7 @@ class pkgCache::PrvIterator
    void operator ++(int) {if (Prv != Owner->ProvideP) Prv = Owner->ProvideP +
        (Type == PrvVer?Prv->NextPkgProv:Prv->NextProvides);};
    inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Prv == Owner->ProvideP?true:false;};
+   inline bool end() const {return Owner == 0 || Prv == Owner->ProvideP?true:false;};
    
    // Comparison
    inline bool operator ==(const PrvIterator &B) const {return Prv == B.Prv;};
@@ -244,6 +244,8 @@ class pkgCache::PrvIterator
    inline PkgIterator OwnerPkg() {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[Prv->Version].ParentPkg);};
    inline unsigned long Index() const {return Prv - Owner->ProvideP;};
 
+   inline PrvIterator() : Prv(0), Type(PrvVer), Owner(0)  {};
+
    inline PrvIterator(pkgCache &Owner,Provides *Trg,Version *) :
           Prv(Trg), Type(PrvVer), Owner(&Owner) 
    {