do not segfault if make_cache_entry failed

diff --git a/t/t5000-tar-tree.sh b/t/t5000-tar-tree.sh
index 87902f81ef5455290d8a5ff5cf91d39f5004b11b..e395ff4e341bacea21cc5cd909304b7bb4fcb044 100755 (executable)
--- a/t/t5000-tar-tree.sh
+++ b/t/t5000-tar-tree.sh
@@ -43,6 +43,11 @@ test_expect_success \
       echo text >file_with_long_path) &&
      (cd a && find .) | sort >a.lst'
 
+test_expect_success \
+    'add ignored file' \
+    'echo ignore me >a/ignored &&
+     echo ignored export-ignore >.gitattributes'
+
 test_expect_success \
     'add files to repository' \
     'find a -type f | xargs git update-index --add &&
@@ -52,6 +57,10 @@ test_expect_success \
      git update-ref HEAD $(TZ=GMT GIT_COMMITTER_DATE="2005-05-27 22:00:00" \
      git commit-tree $treeid </dev/null)'
 
+test_expect_success \
+    'remove ignored file' \
+    'rm a/ignored'
+
 test_expect_success \
     'git archive' \
     'git archive HEAD >b.tar'