untracked-cache: be defensive about missing NULs in index

diff --git a/t/t5573-pull-verify-signatures.sh b/t/t5573-pull-verify-signatures.sh
index 747775c147612f3b09a599661fe3dc7d3b1d34bd..3e9876e1971348daad7fd87f8aa107ea5fd6aaff 100755 (executable)
--- a/t/t5573-pull-verify-signatures.sh
+++ b/t/t5573-pull-verify-signatures.sh
@@ -78,4 +78,11 @@ test_expect_success GPG 'pull commit with bad signature with --no-verify-signatu
        git pull --ff-only --no-verify-signatures bad 2>pullerror
 '
 
+test_expect_success GPG 'pull unsigned commit into unborn branch' '
+       git init empty-repo &&
+       test_must_fail \
+               git -C empty-repo pull --verify-signatures ..  2>pullerror &&
+       test_i18ngrep "does not have a GPG signature" pullerror
+'
+
 test_done