1 files changed, 3 insertions, 0 deletions
diff --git a/include/git2/odb_backend.h b/include/git2/odb_backend.h
index af1e3e5b9..d004238a4 100644
--- a/include/git2/odb_backend.h
+++ b/include/git2/odb_backend.h
@@ -65,10 +65,13 @@ typedef enum {
 	GIT_STREAM_RW = (GIT_STREAM_RDONLY | GIT_STREAM_WRONLY),
 } git_odb_stream_t;
 
+typedef struct git_hash_ctx git_hash_ctx;
+
 /** A stream to read/write from a backend */
 struct git_odb_stream {
 	git_odb_backend *backend;
 	unsigned int mode;
+	git_hash_ctx *hash_ctx;
 
 	int (*read)(git_odb_stream *stream, char *buffer, size_t len);
 	int (*write)(git_odb_stream *stream, const char *buffer, size_t len);