read-tree A B C: do not create a bogus index and do not segfault

diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh
index 983a39398f17dc2b261771e780e8c010f038a12a..645583f9d729cb04ea7bd9638b0c49c48128822e 100755 (executable)
--- a/t/t5300-pack-object.sh
+++ b/t/t5300-pack-object.sh
@@ -266,7 +266,7 @@ test_expect_success \
 
 test_expect_success \
     'make sure index-pack detects the SHA1 collision' \
-    '! git-index-pack -o bad.idx test-3.pack'
+    'test_must_fail git-index-pack -o bad.idx test-3.pack'
 
 test_expect_success \
     'honor pack.packSizeLimit' \