git/t/t5574-fetch-output.sh
Patrick Steinhardt c92abe71df builtin/fetch: fix leaking transaction with --atomic
With the `--atomic` flag, we use a single ref transaction to commit all
ref updates in git-fetch(1). The lifetime of transactions is somewhat
weird: while `ref_transaction_abort()` will free the transaction, a call
to `ref_transaction_commit()` won't. We thus have to manually free the
transaction in the successful case.

Adapt the code to free the transaction in the exit path to plug the
resulting memory leak. As `ref_transaction_abort()` already freed the
transaction for us, we have to unset the transaction when we hit that
code path to not cause a double free.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-08-22 09:18:06 -07:00

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#!/bin/sh
test_description='git fetch output format'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'fetch with invalid output format configuration' '
test_when_finished "rm -rf clone" &&
git clone . clone &&
test_must_fail git -C clone -c fetch.output fetch origin 2>actual.err &&
cat >expect <<-EOF &&
error: missing value for ${SQ}fetch.output${SQ}
fatal: unable to parse ${SQ}fetch.output${SQ} from command-line config
EOF
test_cmp expect actual.err &&
test_must_fail git -C clone -c fetch.output= fetch origin 2>actual.err &&
cat >expect <<-EOF &&
fatal: invalid value for ${SQ}fetch.output${SQ}: ${SQ}${SQ}
EOF
test_cmp expect actual.err &&
test_must_fail git -C clone -c fetch.output=garbage fetch origin 2>actual.err &&
cat >expect <<-EOF &&
fatal: invalid value for ${SQ}fetch.output${SQ}: ${SQ}garbage${SQ}
EOF
test_cmp expect actual.err
'
test_expect_success 'fetch aligned output' '
git clone . full-output &&
test_commit looooooooooooong-tag &&
(
cd full-output &&
git -c fetch.output=full fetch origin >actual 2>&1 &&
grep -e "->" actual | cut -c 22- >../actual
) &&
cat >expect <<-\EOF &&
main -> origin/main
looooooooooooong-tag -> looooooooooooong-tag
EOF
test_cmp expect actual
'
test_expect_success 'fetch compact output' '
git clone . compact &&
test_commit extraaa &&
(
cd compact &&
git -c fetch.output=compact fetch origin >actual 2>&1 &&
grep -e "->" actual | cut -c 22- >../actual
) &&
cat >expect <<-\EOF &&
main -> origin/*
extraaa -> *
EOF
test_cmp expect actual
'
test_expect_success 'setup for fetch porcelain output' '
# Set up a bunch of references that we can use to demonstrate different
# kinds of flag symbols in the output format.
test_commit commit-for-porcelain-output &&
MAIN_OLD=$(git rev-parse HEAD) &&
git branch "fast-forward" &&
git branch "deleted-branch" &&
git checkout -b force-updated &&
test_commit --no-tag force-update-old &&
FORCE_UPDATED_OLD=$(git rev-parse HEAD) &&
git checkout main &&
# Backup to preseed.git
git clone --mirror . preseed.git &&
# Continue changing our local references.
git branch new-branch &&
git branch -d deleted-branch &&
git checkout fast-forward &&
test_commit --no-tag fast-forward-new &&
FAST_FORWARD_NEW=$(git rev-parse HEAD) &&
git checkout force-updated &&
git reset --hard HEAD~ &&
test_commit --no-tag force-update-new &&
FORCE_UPDATED_NEW=$(git rev-parse HEAD)
'
for opt in "" "--atomic"
do
test_expect_success "fetch porcelain output ${opt:+(atomic)}" '
test_when_finished "rm -rf porcelain" &&
# Clone and pre-seed the repositories. We fetch references into two
# namespaces so that we can test that rejected and force-updated
# references are reported properly.
refspecs="refs/heads/*:refs/unforced/* +refs/heads/*:refs/forced/*" &&
git clone preseed.git porcelain &&
git -C porcelain fetch origin $opt $refspecs &&
cat >expect <<-EOF &&
- $MAIN_OLD $ZERO_OID refs/forced/deleted-branch
- $MAIN_OLD $ZERO_OID refs/unforced/deleted-branch
$MAIN_OLD $FAST_FORWARD_NEW refs/unforced/fast-forward
! $FORCE_UPDATED_OLD $FORCE_UPDATED_NEW refs/unforced/force-updated
* $ZERO_OID $MAIN_OLD refs/unforced/new-branch
$MAIN_OLD $FAST_FORWARD_NEW refs/forced/fast-forward
+ $FORCE_UPDATED_OLD $FORCE_UPDATED_NEW refs/forced/force-updated
* $ZERO_OID $MAIN_OLD refs/forced/new-branch
$MAIN_OLD $FAST_FORWARD_NEW refs/remotes/origin/fast-forward
+ $FORCE_UPDATED_OLD $FORCE_UPDATED_NEW refs/remotes/origin/force-updated
* $ZERO_OID $MAIN_OLD refs/remotes/origin/new-branch
EOF
# Change the URL of the repository to fetch different references.
git -C porcelain remote set-url origin .. &&
# Execute a dry-run fetch first. We do this to assert that the dry-run
# and non-dry-run fetches produces the same output. Execution of the
# fetch is expected to fail as we have a rejected reference update.
test_must_fail git -C porcelain fetch $opt \
--porcelain --dry-run --prune origin $refspecs >actual &&
test_cmp expect actual &&
# And now we perform a non-dry-run fetch.
test_must_fail git -C porcelain fetch $opt \
--porcelain --prune origin $refspecs >actual 2>stderr &&
test_cmp expect actual &&
test_must_be_empty stderr
'
done
test_expect_success 'fetch porcelain with multiple remotes' '
test_when_finished "rm -rf porcelain" &&
git switch --create multiple-remotes &&
git clone . porcelain &&
git -C porcelain remote add second-remote "$PWD" &&
git -C porcelain fetch second-remote &&
test_commit --no-tag multi-commit &&
old_commit=$(git rev-parse HEAD~) &&
new_commit=$(git rev-parse HEAD) &&
cat >expect <<-EOF &&
$old_commit $new_commit refs/remotes/origin/multiple-remotes
$old_commit $new_commit refs/remotes/second-remote/multiple-remotes
EOF
git -C porcelain fetch --porcelain --all >actual 2>stderr &&
test_cmp expect actual &&
test_must_be_empty stderr
'
test_expect_success 'fetch porcelain refuses to work with submodules' '
test_when_finished "rm -rf porcelain" &&
cat >expect <<-EOF &&
fatal: options ${SQ}--porcelain${SQ} and ${SQ}--recurse-submodules${SQ} cannot be used together
EOF
git init porcelain &&
test_must_fail git -C porcelain fetch --porcelain --recurse-submodules=yes 2>stderr &&
test_cmp expect stderr &&
test_must_fail git -C porcelain fetch --porcelain --recurse-submodules=on-demand 2>stderr &&
test_cmp expect stderr
'
test_expect_success 'fetch porcelain overrides fetch.output config' '
test_when_finished "rm -rf porcelain" &&
git switch --create config-override &&
git clone . porcelain &&
test_commit new-commit &&
old_commit=$(git rev-parse HEAD~) &&
new_commit=$(git rev-parse HEAD) &&
cat >expect <<-EOF &&
$old_commit $new_commit refs/remotes/origin/config-override
* $ZERO_OID $new_commit refs/tags/new-commit
EOF
git -C porcelain -c fetch.output=compact fetch --porcelain >stdout 2>stderr &&
test_must_be_empty stderr &&
test_cmp expect stdout
'
test_expect_success 'fetch --no-porcelain overrides previous --porcelain' '
test_when_finished "rm -rf no-porcelain" &&
git switch --create no-porcelain &&
git clone . no-porcelain &&
test_commit --no-tag no-porcelain &&
old_commit=$(git rev-parse --short HEAD~) &&
new_commit=$(git rev-parse --short HEAD) &&
cat >expect <<-EOF &&
From $(test-tool path-utils real_path .)/.
$old_commit..$new_commit no-porcelain -> origin/no-porcelain
EOF
git -C no-porcelain fetch --porcelain --no-porcelain >stdout 2>stderr &&
test_cmp expect stderr &&
test_must_be_empty stdout
'
test_expect_success 'fetch output with HEAD' '
test_when_finished "rm -rf head" &&
git clone . head &&
git -C head fetch --dry-run origin HEAD >actual.out 2>actual.err &&
cat >expect <<-EOF &&
From $(test-tool path-utils real_path .)/.
* branch HEAD -> FETCH_HEAD
EOF
test_must_be_empty actual.out &&
test_cmp expect actual.err &&
git -C head fetch origin HEAD >actual.out 2>actual.err &&
test_must_be_empty actual.out &&
test_cmp expect actual.err &&
git -C head fetch --dry-run origin HEAD:foo >actual.out 2>actual.err &&
cat >expect <<-EOF &&
From $(test-tool path-utils real_path .)/.
* [new ref] HEAD -> foo
EOF
test_must_be_empty actual.out &&
test_cmp expect actual.err &&
git -C head fetch origin HEAD:foo >actual.out 2>actual.err &&
test_must_be_empty actual.out &&
test_cmp expect actual.err
'
test_expect_success 'fetch porcelain output with HEAD' '
test_when_finished "rm -rf head" &&
git clone . head &&
COMMIT_ID=$(git rev-parse HEAD) &&
git -C head fetch --porcelain --dry-run origin HEAD >actual &&
cat >expect <<-EOF &&
* $ZERO_OID $COMMIT_ID FETCH_HEAD
EOF
test_cmp expect actual &&
git -C head fetch --porcelain origin HEAD >actual &&
test_cmp expect actual &&
git -C head fetch --porcelain --dry-run origin HEAD:foo >actual &&
cat >expect <<-EOF &&
* $ZERO_OID $COMMIT_ID refs/heads/foo
EOF
test_cmp expect actual &&
git -C head fetch --porcelain origin HEAD:foo >actual &&
test_cmp expect actual
'
test_expect_success 'fetch output with object ID' '
test_when_finished "rm -rf object-id" &&
git clone . object-id &&
commit=$(git rev-parse HEAD) &&
git -C object-id fetch --dry-run origin $commit:object-id >actual.out 2>actual.err &&
cat >expect <<-EOF &&
From $(test-tool path-utils real_path .)/.
* [new ref] $commit -> object-id
EOF
test_must_be_empty actual.out &&
test_cmp expect actual.err &&
git -C object-id fetch origin $commit:object-id >actual.out 2>actual.err &&
test_must_be_empty actual.out &&
test_cmp expect actual.err
'
test_expect_success '--no-show-forced-updates' '
mkdir forced-updates &&
(
cd forced-updates &&
git init &&
test_commit 1 &&
test_commit 2
) &&
git clone forced-updates forced-update-clone &&
git clone forced-updates no-forced-update-clone &&
git -C forced-updates reset --hard HEAD~1 &&
(
cd forced-update-clone &&
git fetch --show-forced-updates origin 2>output &&
test_grep "(forced update)" output
) &&
(
cd no-forced-update-clone &&
git fetch --no-show-forced-updates origin 2>output &&
test_grep ! "(forced update)" output
)
'
test_done