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7e4a2a8)
Johannes found that the test has 1/256 chance of falsely
producing an uncorrupted idx file, causing the check to detect
corruption fail. Now we have 1/2^160 chance of false failure
;-).
Signed-off-by: Junio C Hamano <junkio@cox.net>
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
if git-verify-pack test-3.idx
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
if git-verify-pack test-3.idx
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
if git-verify-pack test-3.idx
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
if git-verify-pack test-3.idx
+ : TYPE/SIZE byte of the first packed object data &&
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
if git-verify-pack test-3.idx
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
if git-verify-pack test-3.idx
+ : sum of the index file itself &&
+ l=`wc -c <test-3.idx` &&
+ l=`expr "$l" - 20` &&
cp test-1-${packname_1}.pack test-3.pack &&
cp test-1-${packname_1}.pack test-3.pack &&
- dd if=/dev/zero of=test-3.idx count=1 bs=1 conv=notrunc seek=1200 &&
+ dd if=/dev/zero of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
if git-verify-pack test-3.pack
then false
else :;
if git-verify-pack test-3.pack
then false
else :;