1 files changed, 1 insertions, 1 deletions
diff --git a/shared.c b/shared.c
index c7cd8a5..f20fb5c 100644
--- a/shared.c
+++ b/shared.c

@@ -360,7 +360,7 @@ void cgit_diff_tree(const unsigned char *old_sha1,
        opt.format_callback_data = fn;
        diff_setup_done(&opt);
-        if (old_sha1)
+        if (old_sha1 && !is_null_sha1(old_sha1))
                ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
        else
                ret = diff_root_tree_sha1(new_sha1, "", &opt);

diff --git a/shared.c b/shared.c index c7cd8a5..f20fb5c 100644 --- a/shared.c +++ b/shared.c
@@ -360,7 +360,7 @@ void cgit_diff_tree(const unsigned char *old_sha1,
360	opt.format_callback_data = fn;	360	opt.format_callback_data = fn;
361	diff_setup_done(&opt);	361	diff_setup_done(&opt);
362		362
363	if (old_sha1)	363	if (old_sha1 && !is_null_sha1(old_sha1))
364	ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);	364	ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
365	else	365	else
366	ret = diff_root_tree_sha1(new_sha1, "", &opt);	366	ret = diff_root_tree_sha1(new_sha1, "", &opt);