Make all non-user-creatable structures non-comparable (#802)

This change makes all non-user-creatable structures non-comparable. This
makes it easier to add changes later that don't introduce breaking
changes from the go compatibility guarantees perspective.

This, of course, implies that this change _is_ a breaking change, but since
these structures are not intended to be created by users (or de-referenced),
it should be okay.

1 files changed, 2 insertions, 0 deletions

diff --git a/tree.go b/tree.go
index 38c5bdc..14fe7e4 100644
--- a/tree.go
+++ b/tree.go
@@ -24,6 +24,7 @@ const (
 )
 
 type Tree struct {
+	doNotCompare
 	Object
 	cast_ptr *C.git_tree
 }
@@ -167,6 +168,7 @@ func (t *Tree) Walk(callback TreeWalkCallback) error {
 }
 
 type TreeBuilder struct {
+	doNotCompare
 	ptr  *C.git_treebuilder
 	repo *Repository
 }