kmcgui...@twopensource.com writes:
> From: Keith McGuigan <kmcgui...@twopensource.com>
>
> The string_list gets populated with the names from the remotes[] array,
> which are not dup'd and the list does not own.
>
> Signed-of-by: Keith McGuigan <kmcgui...@twopensource.com>
> ---
For names that come from remote_get()->name, e.g.
static int get_one_remote_for_fetch(struct remote *remote, void *priv)
{
struct string_list *list = priv;
if (!remote->skip_default_update)
string_list_append(list, remote->name);
return 0;
}
you are correct that this is borrowed memory we are not allowed to
free. But is borrowing from remote->name the only way this list is
populated? For example, what happens in add_remote_or_group(),
which does this?
struct remote_group_data {
const char *name;
struct string_list *list;
};
static int get_remote_group(const char *key, const char *value, void *priv)
{
struct remote_group_data *g = priv;
if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
/* split list by white space */
while (*value) {
size_t wordlen = strcspn(value, " \t\n");
if (wordlen >= 1)
string_list_append(g->list,
xstrndup(value,
wordlen));
This newly allocated piece of memory is held by g->list, which was...
value += wordlen + (value[wordlen] != '\0');
}
}
return 0;
}
static int add_remote_or_group(const char *name, struct string_list *list)
{
int prev_nr = list->nr;
struct remote_group_data g;
g.name = name; g.list = list;
... passed as a callback parameter from here.
git_config(get_remote_group, &g);
if (list->nr == prev_nr) {
struct remote *remote = remote_get(name);
if (!remote_is_configured(remote))
return 0;
string_list_append(list, remote->name);
This makes remote->name borrowed, which we cannot free() as you
point out.
}
return 1;
}
So, while I agree that many should not be freed, this change makes
the code leak some at the same time.
> builtin/fetch.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/builtin/fetch.c b/builtin/fetch.c
> index 630ae6a1bb78..181da5a2e7a3 100644
> --- a/builtin/fetch.c
> +++ b/builtin/fetch.c
> @@ -1347,8 +1347,6 @@ int cmd_fetch(int argc, const char **argv, const char
> *prefix)
> argv_array_clear(&options);
> }
>
> - /* All names were strdup()ed or strndup()ed */
> - list.strdup_strings = 1;
> string_list_clear(&list, 0);
>
> close_all_packs();
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