Merge branch 'svn-cache' of git://bogomips.org/git-svn

* 'svn-cache' of git://bogomips.org/git-svn:
  git-svn: do not reuse caches memoized for a different architecture

Author: gitster

perl/Git/SVN.pm

@@ -1663,7 +1663,17 @@ sub tie_for_persistent_memoization {
 	if ($memo_backend > 0) {
 		tie %$hash => 'Git::SVN::Memoize::YAML', "$path.yaml";
 	} else {
-		tie %$hash => 'Memoize::Storable', "$path.db", 'nstore';
+		# first verify that any existing file can actually be loaded
+		# (it may have been saved by an incompatible version)
+		my $db = "$path.db";
+		if (-e $db) {
+			use Storable qw(retrieve);
+
+			if (!eval { retrieve($db); 1 }) {
+				unlink $db or die "unlink $db failed: $!";
+			}
+		}
+		tie %$hash => 'Memoize::Storable', $db, 'nstore';
 	}
 }