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list-objects-filter: remove OPT_PARSE_LIST_OBJECTS_FILTER_INIT()

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OPT_PARSE_LIST_OBJECTS_FILTER_INIT() with a non-NULL second argument
passes a function pointer via an object pointer, which is undefined.  It
may work fine on platforms that implement C99 extension J.5.7 (Function
pointer casts).  Remove the unused macro and avoid the dependency on
that extension.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2022-11-29 13:26:44 +01:00 committed by Junio C Hamano
parent 0d5448a554
commit d4f7036887
2 changed files with 2 additions and 20 deletions
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4
list-objects-filter-options.c
View File

@ -290,10 +290,6 @@ int opt_parse_list_objects_filter(const struct option *opt,
const char *arg, int unset)
{
struct list_objects_filter_options *filter_options = opt->value;
opt_lof_init init = (opt_lof_init)opt->defval;
if (init)
filter_options = init(opt->value);
if (unset || !arg)
list_objects_filter_set_no_filter(filter_options);

18
list-objects-filter-options.h
View File

@ -111,27 +111,13 @@ void parse_list_objects_filter(
* The opt->value to opt_parse_list_objects_filter() is either a
* "struct list_objects_filter_option *" when using
* OPT_PARSE_LIST_OBJECTS_FILTER().
*
* Or, if using no "struct option" field is used by the callback,
* except the "defval" which is expected to be an "opt_lof_init"
* function, which is called with the "opt->value" and must return a
* pointer to the ""struct list_objects_filter_option *" to be used.
*
* The OPT_PARSE_LIST_OBJECTS_FILTER_INIT() can be used e.g. the
* "struct list_objects_filter_option" is embedded in a "struct
* rev_info", which the "defval" could be tasked with lazily
* initializing. See cmd_pack_objects() for an example.
*/
int opt_parse_list_objects_filter(const struct option *opt,
const char *arg, int unset);
typedef struct list_objects_filter_options *(*opt_lof_init)(void *);
#define OPT_PARSE_LIST_OBJECTS_FILTER_INIT(fo, init) \
{ OPTION_CALLBACK, 0, "filter", (fo), N_("args"), \
N_("object filtering"), 0, opt_parse_list_objects_filter, \
(intptr_t)(init) }
#define OPT_PARSE_LIST_OBJECTS_FILTER(fo) \
OPT_PARSE_LIST_OBJECTS_FILTER_INIT((fo), NULL)
OPT_CALLBACK(0, "filter", (fo), N_("args"), \
N_("object filtering"), opt_parse_list_objects_filter)
/*
* Translates abbreviated numbers in the filter's filter_spec into their