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list, slist: Add g_clear_{s,}list()

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Although not quite as often-occurring, this should help with constructs
like this:

  if (list)
    {
      g_list_free_full (list, foo);
      list = NULL;
    }

Closes https://gitlab.gnome.org/GNOME/glib/issues/1943
This commit is contained in:
Ernestas Kulik
2019-11-23 17:41:54 +01:00
parent 8555aeec8d
commit 58ba7d78fb
6 changed files with 152 additions and 0 deletions
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50
glib/tests/utils.c
View File

@@ -760,6 +760,54 @@ test_int_limits (void)
g_free (str);
}
static void
test_clear_list (void)
{
GList *list = NULL;
g_clear_list (&list, NULL);
g_assert_null (list);
list = g_list_prepend (list, "test");
g_assert_nonnull (list);
g_clear_list (&list, NULL);
g_assert_null (list);
g_clear_list (&list, g_free);
g_assert_null (list);
list = g_list_prepend (list, g_malloc (16));
g_assert_nonnull (list);
g_clear_list (&list, g_free);
g_assert_null (list);
}
static void
test_clear_slist (void)
{
GSList *slist = NULL;
g_clear_slist (&slist, NULL);
g_assert_null (slist);
slist = g_slist_prepend (slist, "test");
g_assert_nonnull (slist);
g_clear_slist (&slist, NULL);
g_assert_null (slist);
g_clear_slist (&slist, g_free);
g_assert_null (slist);
slist = g_slist_prepend (slist, g_malloc (16));
g_assert_nonnull (slist);
g_clear_slist (&slist, g_free);
g_assert_null (slist);
}
int
main (int argc,
char *argv[])
@@ -814,6 +862,8 @@ main (int argc,
g_test_add_func ("/utils/atexit", test_atexit);
g_test_add_func ("/utils/check-setuid", test_check_setuid);
g_test_add_func ("/utils/int-limits", test_int_limits);
g_test_add_func ("/utils/clear-list", test_clear_list);
g_test_add_func ("/utils/clear-slist", test_clear_slist);
return g_test_run ();
}