check_packed_git_idx(): check integrity of the idx file itself.

Although pack-check.c had routine to verify the checksum for the
pack index file itself, the core did not check it before using
it.

This is stolen from the patch to tighten packname requirements.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh
index 5b50536b54..7dfb1ab77b 100755
--- a/t/t5300-pack-object.sh
+++ b/t/t5300-pack-object.sh
@@ -163,6 +163,13 @@ test_expect_success \
      else :;
      fi &&
 
+     cp test-1-${packname_1}.pack test-3.pack &&
+     dd if=/dev/zero of=test-3.idx count=1 bs=1 conv=notrunc seek=1200 &&
+     if git-verify-pack test-3.pack
+     then false
+     else :;
+     fi &&
+
      :'
 
 test_expect_success \