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diff: remove parseopts member from struct diff_options

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repo_diff_setup() builds the struct option array with git diff's command
line options and stores a pointer to it in the parseopts member of
struct diff_options.  The array is freed by diff_setup_done(), but not
by release_revisions().  Thus calling only repo_diff_setup() and
release_revisions() leaks that array.

We could free it in release_revisions() as well to plug that leak, but
there is a better way: Only build it when needed.  Absorb
prep_parse_options() into the last place that uses the parseopts member
of struct diff_options, add_diff_parseopts(), and get rid of said
member.

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 2022-12-01 23:53:17 +01:00 committed by Junio C Hamano
parent 6c6048fa7f
commit 189e97bc4b
2 changed files with 1 additions and 15 deletions
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15
diff.c
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@ -4593,8 +4593,6 @@ static void run_checkdiff(struct diff_filepair *p, struct diff_options *o)
builtin_checkdiff(name, other, attr_path, p->one, p->two, o);
}
static void prep_parse_options(struct diff_options *options);
void repo_diff_setup(struct repository *r, struct diff_options *options)
{
memcpy(options, &default_diff_options, sizeof(*options));
@ -4640,8 +4638,6 @@ void repo_diff_setup(struct repository *r, struct diff_options *options)
options->color_moved = diff_color_moved_default;
options->color_moved_ws_handling = diff_color_moved_ws_default;
prep_parse_options(options);
}
static const char diff_status_letters[] = {
@ -4799,8 +4795,6 @@ void diff_setup_done(struct diff_options *options)
options->filter = ~filter_bit[DIFF_STATUS_FILTER_AON];
options->filter &= ~options->filter_not;
}
FREE_AND_NULL(options->parseopts);
}
int parse_long_opt(const char *opt, const char **argv,
@ -5399,11 +5393,6 @@ static int diff_opt_rotate_to(const struct option *opt, const char *arg, int uns
struct option *add_diff_options(const struct option *opts,
struct diff_options *options)
{
return parse_options_concat(opts, options->parseopts);
}
static void prep_parse_options(struct diff_options *options)
{
struct option parseopts[] = {
OPT_GROUP(N_("Diff output format options")),
@ -5673,8 +5662,7 @@ static void prep_parse_options(struct diff_options *options)
OPT_END()
};
ALLOC_ARRAY(options->parseopts, ARRAY_SIZE(parseopts));
memcpy(options->parseopts, parseopts, sizeof(parseopts));
return parse_options_concat(opts, parseopts);
}
int diff_opt_parse(struct diff_options *options,
@ -6497,7 +6485,6 @@ void diff_free(struct diff_options *options)
diff_free_file(options);
diff_free_ignore_regex(options);
clear_pathspec(&options->pathspec);
FREE_AND_NULL(options->parseopts);
}
void diff_flush(struct diff_options *options)

1
diff.h
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@ -394,7 +394,6 @@ struct diff_options {
unsigned color_moved_ws_handling;
struct repository *repo;
struct option *parseopts;
struct strmap *additional_path_headers;
int no_free;