mirror of
https://github.com/git/git
synced 2024-11-05 04:53:18 +00:00
4d7f95ed1f
The add_pattern() function takes a pattern string, but neither makes a copy of it nor takes ownership of the memory. So it is the caller's responsibility to make sure the string hangs around as long as the pattern_list which references it. There are a few cases in sparse-checkout where we use string literal patterns by stuffing them into a strbuf, detaching the buffer, and then passing the result into add_pattern(). This creates a leak when the pattern_list is eventually cleared, since we don't retain a copy of the detached buffer to free. But we can observe that the whole strbuf dance is unnecessary. The point was presumably[1] to satisfy the lifetime requirement of the string. But string literals have static duration; we can count on them lasting for the whole program. So we can fix the leak by just passing them directly. And as a bonus, that simplifies the code. The leaks can be seen in t7002, which drops from 25 leaks to 22 with this patch. It also makes t3602 and t1090 leak-free. In the long run, we will also want to clean up this (undocumented!) memory lifetime requirement of add_pattern(). But that can come in a later patch; passing the string literals directly will be the right thing either way. [1] The code in question comes from416adc8711(sparse-checkout: update working directory in-process for 'init', 2019-11-21) and99dfa6f970(sparse-checkout: use in-process update for disable subcommand, 2019-11-21), but I didn't see anything in their commit messages or on the list explaining the strbufs. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
110 lines
2.8 KiB
Bash
Executable file
110 lines
2.8 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
test_description='sparse checkout scope tests'
|
|
|
|
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
|
|
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
|
|
|
|
TEST_CREATE_REPO_NO_TEMPLATE=1
|
|
TEST_PASSES_SANITIZE_LEAK=true
|
|
. ./test-lib.sh
|
|
|
|
test_expect_success 'setup' '
|
|
echo "initial" >a &&
|
|
echo "initial" >b &&
|
|
echo "initial" >c &&
|
|
git add a b c &&
|
|
git commit -m "initial commit"
|
|
'
|
|
|
|
test_expect_success 'create feature branch' '
|
|
git checkout -b feature &&
|
|
echo "modified" >b &&
|
|
echo "modified" >c &&
|
|
git add b c &&
|
|
git commit -m "modification"
|
|
'
|
|
|
|
test_expect_success 'perform sparse checkout of main' '
|
|
git config --local --bool core.sparsecheckout true &&
|
|
mkdir .git/info &&
|
|
echo "!/*" >.git/info/sparse-checkout &&
|
|
echo "/a" >>.git/info/sparse-checkout &&
|
|
echo "/c" >>.git/info/sparse-checkout &&
|
|
git checkout main &&
|
|
test_path_is_file a &&
|
|
test_path_is_missing b &&
|
|
test_path_is_file c
|
|
'
|
|
|
|
test_expect_success 'merge feature branch into sparse checkout of main' '
|
|
git merge feature &&
|
|
test_path_is_file a &&
|
|
test_path_is_missing b &&
|
|
test_path_is_file c &&
|
|
test "$(cat c)" = "modified"
|
|
'
|
|
|
|
test_expect_success 'return to full checkout of main' '
|
|
git checkout feature &&
|
|
echo "/*" >.git/info/sparse-checkout &&
|
|
git checkout main &&
|
|
test_path_is_file a &&
|
|
test_path_is_file b &&
|
|
test_path_is_file c &&
|
|
test "$(cat b)" = "modified"
|
|
'
|
|
|
|
test_expect_success 'skip-worktree on files outside sparse patterns' '
|
|
git sparse-checkout disable &&
|
|
git sparse-checkout set --no-cone "a*" &&
|
|
git checkout-index --all --ignore-skip-worktree-bits &&
|
|
|
|
git ls-files -t >output &&
|
|
! grep ^S output >actual &&
|
|
test_must_be_empty actual &&
|
|
|
|
test_config sparse.expectFilesOutsideOfPatterns true &&
|
|
cat <<-\EOF >expect &&
|
|
S b
|
|
S c
|
|
EOF
|
|
git ls-files -t >output &&
|
|
grep ^S output >actual &&
|
|
test_cmp expect actual
|
|
'
|
|
|
|
test_expect_success 'in partial clone, sparse checkout only fetches needed blobs' '
|
|
test_create_repo server &&
|
|
git clone --template= "file://$(pwd)/server" client &&
|
|
|
|
test_config -C server uploadpack.allowfilter 1 &&
|
|
test_config -C server uploadpack.allowanysha1inwant 1 &&
|
|
echo a >server/a &&
|
|
echo bb >server/b &&
|
|
mkdir server/c &&
|
|
echo ccc >server/c/c &&
|
|
git -C server add a b c/c &&
|
|
git -C server commit -m message &&
|
|
|
|
test_config -C client core.sparsecheckout 1 &&
|
|
mkdir client/.git/info &&
|
|
echo "!/*" >client/.git/info/sparse-checkout &&
|
|
echo "/a" >>client/.git/info/sparse-checkout &&
|
|
git -C client fetch --filter=blob:none origin &&
|
|
git -C client checkout FETCH_HEAD &&
|
|
|
|
git -C client rev-list HEAD \
|
|
--quiet --objects --missing=print >unsorted_actual &&
|
|
(
|
|
printf "?" &&
|
|
git hash-object server/b &&
|
|
printf "?" &&
|
|
git hash-object server/c/c
|
|
) >unsorted_expect &&
|
|
sort unsorted_actual >actual &&
|
|
sort unsorted_expect >expect &&
|
|
test_cmp expect actual
|
|
'
|
|
|
|
test_done
|