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-rw-r--r--apt-pkg/policy.cc25
1 files changed, 18 insertions, 7 deletions
diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc
index 4ae3b5f87..0a06cc6e3 100644
--- a/apt-pkg/policy.cc
+++ b/apt-pkg/policy.cc
@@ -166,11 +166,15 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const &Pk
tracks the default when the default is taken away, and a permanent
pin that stays at that setting.
*/
+ bool PrefSeen = false;
for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
{
/* Lets see if this version is the installed version */
bool instVer = (Pkg.CurrentVer() == Ver);
+ if (Pref == Ver)
+ PrefSeen = true;
+
for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; ++VF)
{
/* If this is the status file, and the current version is not the
@@ -187,26 +191,33 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const &Pk
{
Pref = Ver;
Max = Prio;
+ PrefSeen = true;
}
if (Prio > MaxAlt)
{
PrefAlt = Ver;
MaxAlt = Prio;
- }
- }
-
+ }
+ }
+
if (instVer == true && Max < 1000)
{
+ /* Not having seen the Pref yet means we have a specific pin below 1000
+ on a version below the current installed one, so ignore the specific pin
+ as this would be a downgrade otherwise */
+ if (PrefSeen == false || Pref.end() == true)
+ {
+ Pref = Ver;
+ PrefSeen = true;
+ }
/* Elevate our current selection (or the status file itself)
to the Pseudo-status priority. */
- if (Pref.end() == true)
- Pref = Ver;
Max = 1000;
-
+
// Fast path optimize.
if (StatusOverride == false)
break;
- }
+ }
}
// If we do not find our candidate, use the one with the highest pin.
// This means that if there is a version available with pin > 0; there