* apt-pkg/contrib/weakptr.h:

  - add a class WeakPointable which allows one to register weak pointers to
    an object which will be set to NULL when the object is deallocated.
* [ABI break] apt-pkg/acquire{-worker,-item,}.h:
  - subclass pkgAcquire::{Worker,Item,ItemDesc} from WeakPointable.

1 files changed, 2 insertions, 1 deletions

diff --git a/apt-pkg/acquire-worker.h b/apt-pkg/acquire-worker.h
index 2942df69f..06283922e 100644
--- a/apt-pkg/acquire-worker.h
+++ b/apt-pkg/acquire-worker.h
@@ -20,6 +20,7 @@
 #define PKGLIB_ACQUIRE_WORKER_H
 
 #include <apt-pkg/acquire.h>
+#include <apt-pkg/weakptr.h>
 
 
 /** \brief A fetch subprocess.
@@ -41,7 +42,7 @@
  *
  *  \sa pkgAcqMethod, pkgAcquire::Item, pkgAcquire
  */
-class pkgAcquire::Worker
+class pkgAcquire::Worker : public WeakPointable
 {
    friend class pkgAcquire;