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a52f07afcb
Extend the the release_revisions() function so that it frees the "mailmap" in the "struct rev_info". The log family of functions now calls the clear_mailmap() function added in fa8afd18e5a (revisions API: provide and use a release_revisions(), 2021-09-19), allowing us to whitelist some tests with "TEST_PASSES_SANITIZE_LEAK=true". Unfortunately having a pointer to a mailmap in "struct rev_info" instead of an embedded member that we "own" get a bit messy, as can be seen in the change to builtin/commit.c. When we free() this data we won't be able to tell apart a pointer to a "mailmap" on the heap from one on the stack. As seen inea57bc0d41(log: add --use-mailmap option, 2013-01-05) the "log" family allocates it on the heap, but in the find_author_by_nickname() code added inea16794e43(commit: search author pattern against mailmap, 2013-08-23) we allocated it on the stack instead. Ideally we'd simply change that member to a "struct string_list mailmap" and never free() the "mailmap" itself, but that would be a much larger change to the revisions API. We have code that needs to hand an existing "mailmap" to a "struct rev_info", while we could change all of that, let's not go there now. The complexity isn't in the ownership of the "mailmap" per-se, but that various things assume a "rev_info.mailmap == NULL" means "doesn't want mailmap", if we changed that to an init'd "struct string_list we'd need to carefully refactor things to change those assumptions. Let's instead always free() it, and simply declare that if you add such a "mailmap" it must be allocated on the heap. Any modern libc will correctly panic if we free() a stack variable, so this should be safe going forward. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
83 lines
1.7 KiB
Bash
Executable file
83 lines
1.7 KiB
Bash
Executable file
#!/bin/sh
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test_description='test combined/stat/moved interaction'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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TEST_PASSES_SANITIZE_LEAK=true
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. ./test-lib.sh
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# This test covers a weird 3-way interaction between "--cc -p", which will run
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# the combined diff code, along with "--stat", which will be computed as a
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# first-parent stat during the combined diff, and "--color-moved", which
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# enables the emitted_symbols list to store the diff in memory.
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test_expect_success 'set up history with a merge' '
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test_commit A &&
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test_commit B &&
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git checkout -b side HEAD^ &&
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test_commit C &&
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git merge -m M main &&
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test_commit D
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'
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test_expect_success 'log --cc -p --stat --color-moved' '
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cat >expect <<-EOF &&
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commit D
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---
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D.t | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/D.t b/D.t
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new file mode 100644
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index 0000000..$(git rev-parse --short D:D.t)
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--- /dev/null
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+++ b/D.t
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@@ -0,0 +1 @@
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+D
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commit M
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B.t | 1 +
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1 file changed, 1 insertion(+)
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commit C
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---
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C.t | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/C.t b/C.t
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new file mode 100644
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index 0000000..$(git rev-parse --short C:C.t)
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--- /dev/null
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+++ b/C.t
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@@ -0,0 +1 @@
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+C
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commit B
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---
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B.t | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/B.t b/B.t
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new file mode 100644
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index 0000000..$(git rev-parse --short B:B.t)
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--- /dev/null
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+++ b/B.t
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@@ -0,0 +1 @@
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+B
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commit A
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---
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A.t | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/A.t b/A.t
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new file mode 100644
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index 0000000..$(git rev-parse --short A:A.t)
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--- /dev/null
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+++ b/A.t
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@@ -0,0 +1 @@
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+A
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EOF
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git log --format="commit %s" --cc -p --stat --color-moved >actual &&
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test_cmp expect actual
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'
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test_done
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