[v5,02/16] ref-filter.h: provide `REF_FILTER_INIT`

Commit Message

Taylor Blau July 10, 2023, 9:12 p.m. UTC

From: Jeff King <[e-mail]>

Provide a sane initialization value for `struct ref_filter`, which in a
subsequent patch will be used to initialize a new field.

In the meantime, ensure that the `ref_filter` struct used in the
test-helper's `cmd__reach()` is zero-initialized. The lack of
initialization is OK, since `commit_contains()` only looks at the single
`with_commit_tag_algo` field that *is* initialized directly above.

So this does not fix a bug, but rather prevents one from biting us in
the future.

Signed-off-by: Jeff King <[e-mail]>
Signed-off-by: Taylor Blau <[e-mail]>
---
 builtin/branch.c       | 3 +--
 builtin/for-each-ref.c | 3 +--
 builtin/tag.c          | 3 +--
 ref-filter.h           | 3 +++
 t/helper/test-reach.c  | 2 +-
 5 files changed, 7 insertions(+), 7 deletions(-)

Patch

diff --git a/builtin/branch.c b/builtin/branch.c
index e8ff3ecc072..322646f38f5 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -702,7 +702,7 @@  int cmd_branch(int argc, const char **argv, const char *prefix)
 	int reflog = 0, quiet = 0, icase = 0, force = 0,
 	    recurse_submodules_explicit = 0;
 	enum branch_track track;
-	struct ref_filter filter;
+	struct ref_filter filter = REF_FILTER_INIT;
 	static struct ref_sorting *sorting;
 	struct string_list sorting_options = STRING_LIST_INIT_DUP;
 	struct ref_format format = REF_FORMAT_INIT;
@@ -760,7 +760,6 @@  int cmd_branch(int argc, const char **argv, const char *prefix)
 
 	setup_ref_filter_porcelain_msg();
 
-	memset(&filter, 0, sizeof(filter));
 	filter.kind = FILTER_REFS_BRANCHES;
 	filter.abbrev = -1;
 
diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 15409337f83..6b5e313123f 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -24,7 +24,7 @@  int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 	struct string_list sorting_options = STRING_LIST_INIT_DUP;
 	int maxcount = 0, icase = 0, omit_empty = 0;
 	struct ref_array array;
-	struct ref_filter filter;
+	struct ref_filter filter = REF_FILTER_INIT;
 	struct ref_format format = REF_FORMAT_INIT;
 	struct strbuf output = STRBUF_INIT;
 	struct strbuf err = STRBUF_INIT;
@@ -61,7 +61,6 @@  int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 	};
 
 	memset(&array, 0, sizeof(array));
-	memset(&filter, 0, sizeof(filter));
 
 	format.format = "%(objectname) %(objecttype)\t%(refname)";
 
diff --git a/builtin/tag.c b/builtin/tag.c
index 7d34af416c7..a624185d105 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -445,7 +445,7 @@  int cmd_tag(int argc, const char **argv, const char *prefix)
 	struct msg_arg msg = { .buf = STRBUF_INIT };
 	struct ref_transaction *transaction;
 	struct strbuf err = STRBUF_INIT;
-	struct ref_filter filter;
+	struct ref_filter filter = REF_FILTER_INIT;
 	struct ref_sorting *sorting;
 	struct string_list sorting_options = STRING_LIST_INIT_DUP;
 	struct ref_format format = REF_FORMAT_INIT;
@@ -504,7 +504,6 @@  int cmd_tag(int argc, const char **argv, const char *prefix)
 	git_config(git_tag_config, &sorting_options);
 
 	memset(&opt, 0, sizeof(opt));
-	memset(&filter, 0, sizeof(filter));
 	filter.lines = -1;
 	opt.sign = -1;
 
diff --git a/ref-filter.h b/ref-filter.h
index 430701cfb76..a920f73b297 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -92,6 +92,9 @@  struct ref_format {
 	struct string_list bases;
 };
 
+#define REF_FILTER_INIT { \
+	.points_at = OID_ARRAY_INIT, \
+}
 #define REF_FORMAT_INIT {             \
 	.use_color = -1,              \
 	.bases = STRING_LIST_INIT_DUP, \
diff --git a/t/helper/test-reach.c b/t/helper/test-reach.c
index 5b6f2174418..ef58f10c2d6 100644
--- a/t/helper/test-reach.c
+++ b/t/helper/test-reach.c
@@ -139,7 +139,7 @@  int cmd__reach(int ac, const char **av)
 
 		printf("%s(X,_,_,0,0):%d\n", av[1], can_all_from_reach_with_flag(&X_obj, 2, 4, 0, 0));
 	} else if (!strcmp(av[1], "commit_contains")) {
-		struct ref_filter filter;
+		struct ref_filter filter = REF_FILTER_INIT;
 		struct contains_cache cache;
 		init_contains_cache(&cache);