list-objects.c: don't add an unparsed NULL as a pending tree

diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh
index 33cde705953acc9a30d8535da77fe0f90e2b3118..c616deb0d0315acc41da93a81145494bc9f455c1 100755 (executable)
--- a/t/t7004-tag.sh
+++ b/t/t7004-tag.sh
@@ -1090,4 +1090,15 @@ test_expect_success 'filename for the message is relative to cwd' '
        git cat-file tag tag-from-subdir-2 | grep "in sub directory"
 '
 
+# mixing modes and options:
+
+test_expect_success 'mixing incompatibles modes and options is forbidden' '
+       test_must_fail git tag -a
+       test_must_fail git tag -l -v
+       test_must_fail git tag -n 100
+       test_must_fail git tag -l -m msg
+       test_must_fail git tag -l -F some file
+       test_must_fail git tag -v -s
+'
+
 test_done