@@ -1100,7 +1100,6 @@ static const char *find_author_by_nickname(const char *name)
struct rev_info revs;
struct commit *commit;
struct strbuf buf = STRBUF_INIT;
- struct string_list mailmap = STRING_LIST_INIT_NODUP;
const char *av[20];
int ac = 0;
@@ -1111,7 +1110,8 @@ static const char *find_author_by_nickname(const char *name)
av[++ac] = buf.buf;
av[++ac] = NULL;
setup_revisions(ac, av, &revs, NULL);
- revs.mailmap = &mailmap;
+ revs.mailmap = xmalloc(sizeof(struct string_list));
+ string_list_init_nodup(revs.mailmap);
read_mailmap(revs.mailmap);
if (prepare_revision_walk(&revs))
@@ -1122,7 +1122,6 @@ static const char *find_author_by_nickname(const char *name)
ctx.date_mode.type = DATE_NORMAL;
strbuf_release(&buf);
format_commit_message(commit, "%aN <%aE>", &buf, &ctx);
- clear_mailmap(&mailmap);
release_revisions(&revs);
return strbuf_detach(&buf, NULL);
}
@@ -2931,10 +2931,19 @@ static void release_revisions_commit_list(struct rev_info *revs)
}
}
+static void release_revisions_mailmap(struct string_list *mailmap)
+{
+ if (!mailmap)
+ return;
+ clear_mailmap(mailmap);
+ free(mailmap);
+}
+
void release_revisions(struct rev_info *revs)
{
release_revisions_commit_list(revs);
object_array_clear(&revs->pending);
+ release_revisions_mailmap(revs->mailmap);
}
static void add_child(struct rev_info *revs, struct commit *parent, struct commit *child)
@@ -2,6 +2,7 @@
test_description='"-C <path>" option and its effects on other path-related options'
+TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success '"git -C <path>" runs git from the directory <path>' '
@@ -8,6 +8,7 @@ test_description='Test commit notes index (expensive!)'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
create_repo () {
@@ -5,6 +5,7 @@
test_description='diff.context configuration'
+TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'setup' '
@@ -4,6 +4,7 @@ test_description='test combined/stat/moved interaction'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
# This test covers a weird 3-way interaction between "--cc -p", which will run
@@ -1,6 +1,7 @@
#!/bin/sh
test_description='filter-branch removal of trees with null sha1'
+
. ./test-lib.sh
test_expect_success 'setup: base commits' '
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 in ea57bc0d41b (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 in ea16794e430 (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> --- builtin/commit.c | 5 ++--- revision.c | 9 +++++++++ t/t0056-git-C.sh | 1 + t/t3302-notes-index-expensive.sh | 1 + t/t4055-diff-context.sh | 1 + t/t4066-diff-emit-delay.sh | 1 + t/t7008-filter-branch-null-sha1.sh | 1 + 7 files changed, 16 insertions(+), 3 deletions(-)