[PATCH v2 4/6] cocci: add "string_list" rule to swap "DUP" <-> "NODUP"
- From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
- Date
- Jul 21, 2022, 12:00 UTC
- Message-ID
- <patch-v2-4.6-2d858c49243-20220721T111808Z-avarab@gmail.com>
- In-Reply-To
- <cover-v2-0.6-00000000000-20220721T111808Z-avarab@gmail.com>
Add a coccinelle rule to swap "NODUP" and "DUP" initialization in cases such as [1], which as this change shows produces an identical change.
We happened to have only one change in-tree that matched this criteria, but now we're more certain of that, and will convert these sorts of cases in the future.
1. https://lore.kernel.org/git/xmqq7d471dns.fsf@gitster.g/
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> --- builtin/remote.c | 3 +-- contrib/coccinelle/string-list.cocci | 18 ++++++++++++++++++ contrib/coccinelle/tests/string-list.c | 13 +++++++++++++ contrib/coccinelle/tests/string-list.res | 11 +++++++++++ 4 files changed, 43 insertions(+), 2 deletions(-)
diff --git a/builtin/remote.c b/builtin/remote.c index d9b8746cb3c..c713463d89d 100644 --- a/builtin/remote.c +++ b/builtin/remote.c @@ -1229,10 +1229,9 @@ static int get_one_entry(struct remote *remote, void *priv) static int show_all(void) { - struct string_list list = STRING_LIST_INIT_NODUP; + struct string_list list = STRING_LIST_INIT_DUP; int result; - list.strdup_strings = 1; result = for_each_remote(get_one_entry, &list); if (!result) { diff --git a/contrib/coccinelle/string-list.cocci b/contrib/coccinelle/string-list.cocci index 5d285d5732c..63bb2abc93a 100644 --- a/contrib/coccinelle/string-list.cocci +++ b/contrib/coccinelle/string-list.cocci @@ -6,3 +6,21 @@ struct string_list *P; ... when != P - (P)->strdup_strings = 1; + string_list_init_dup(P); + +@@ +type T; +identifier I; +constant INIT_NODUP =~ "^STRING_LIST_INIT_NODUP$"; +constant INIT_DUP =~ "^STRING_LIST_INIT_DUP$"; +@@ +( +- T I = INIT_NODUP; ++ T I = STRING_LIST_INIT_DUP; +... when != &I +- I.strdup_strings = 1; +| +- T I = INIT_DUP; ++ T I = STRING_LIST_INIT_NODUP; +... when != &I +- I.strdup_strings = 0; +) diff --git a/contrib/coccinelle/tests/string-list.c b/contrib/coccinelle/tests/string-list.c index e77822b7682..1821ed4ebb4 100644 --- a/contrib/coccinelle/tests/string-list.c +++ b/contrib/coccinelle/tests/string-list.c @@ -1,7 +1,20 @@ int init(void) { struct string_list *list; + struct string_list list2 = STRING_LIST_INIT_NODUP; + struct string_list list3 = STRING_LIST_INIT_DUP; + struct string_list list4 = STRING_LIST_INIT_NODUP; + struct string_list list5 = STRING_LIST_INIT_DUP; CALLOC_ARRAY(list, 1); + + /* Exclude these */ + string_list_append(&list4, "str"); + string_list_append_nodup(&list5, xstrdup("str")); + list->strdup_strings = 1; + list2.strdup_strings = 1; + list3.strdup_strings = 0; + list4.strdup_strings = 1; + list5.strdup_strings = 0; } diff --git a/contrib/coccinelle/tests/string-list.res b/contrib/coccinelle/tests/string-list.res index 7e666f5bf48..58b3733dec2 100644 --- a/contrib/coccinelle/tests/string-list.res +++ b/contrib/coccinelle/tests/string-list.res @@ -1,7 +1,18 @@ int init(void) { struct string_list *list; + struct string_list list2 = STRING_LIST_INIT_DUP; + struct string_list list3 = STRING_LIST_INIT_NODUP; + struct string_list list4 = STRING_LIST_INIT_NODUP; + struct string_list list5 = STRING_LIST_INIT_DUP; ALLOC_ARRAY(list, 1); + + /* Exclude these */ + string_list_append(&list4, "str"); + string_list_append_nodup(&list5, xstrdup("str")); + string_list_init_dup(list); + list4.strdup_strings = 1; + list5.strdup_strings = 0; }
-- 2.37.1.1095.g64a1e8362fd