Make map_pointer<T> typesafe

Instead of just using uint32_t, which would allow you to
assign e.g. a map_pointer<Version> to a map_pointer<Package>,
use our own smarter struct that has strict type checking.

We allow creating a map_pointer from a nullptr, and we allow
comparing map_pointer to nullptr, which also deals with comparisons
against 0 which are often used, as 0 will be implictly converted
to nullptr.

1 files changed, 1 insertions, 1 deletions

diff --git a/apt-private/private-cachefile.cc b/apt-private/private-cachefile.cc
index 4becc147e..9d875b4a7 100644
--- a/apt-private/private-cachefile.cc
+++ b/apt-private/private-cachefile.cc
@@ -22,7 +22,7 @@
 using namespace std;
 
 static bool SortPackagesByName(pkgCache * const Owner,
-      map_pointer<pkgCache::Package> const A, map_pointer<pkgCache::Package> const B)
+      map_pointer<pkgCache::Group> const A, map_pointer<pkgCache::Group> const B)
 {
    if (A == 0)
       return false;