unpack-trees.c: look ahead in the index

diff --git a/t/t5701-clone-local.sh b/t/t5701-clone-local.sh
index fe0fda282ca4f085f506c743848966fa6bb93591..19b5c0d552fa8b4665b5e396833264e258365b28 100755 (executable)
--- a/t/t5701-clone-local.sh
+++ b/t/t5701-clone-local.sh
@@ -116,4 +116,30 @@ test_expect_success 'bundle clone with nonexistent HEAD' '
        test ! -e .git/refs/heads/master
 '
 
+test_expect_success 'clone empty repository' '
+       cd "$D" &&
+       mkdir empty &&
+       (cd empty && git init) &&
+       git clone empty empty-clone &&
+       test_tick &&
+       (cd empty-clone
+        echo "content" >> foo &&
+        git add foo &&
+        git commit -m "Initial commit" &&
+        git push origin master &&
+        expected=$(git rev-parse master) &&
+        actual=$(git --git-dir=../empty/.git rev-parse master) &&
+        test $actual = $expected)
+'
+
+test_expect_success 'clone empty repository, and then push should not segfault.' '
+       cd "$D" &&
+       rm -fr empty/ empty-clone/ &&
+       mkdir empty &&
+       (cd empty && git init) &&
+       git clone empty empty-clone &&
+       (cd empty-clone &&
+       test_must_fail git push)
+'
+
 test_done