From: Jörg Sommer <joerg.som...@navimatix.de> The back pointer of the next list element was not updated. This lead to SEGV under some circumstances.
Signed-off-by: Jörg Sommer <joerg.som...@navimatix.de> --- ptest_list.c | 5 +++- tests/ptest_list.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 68 insertions(+), 1 deletion(-) diff --git a/ptest_list.c b/ptest_list.c index 917ef4f..c221ebf 100644 --- a/ptest_list.c +++ b/ptest_list.c @@ -206,7 +206,10 @@ ptest_list_remove(struct ptest_list *head, char *ptest, int free) q = p->prev; r = p->next; - q->next = r; + if (q != NULL) + q->next = r; + if (r != NULL) + r->prev = q; if (free) { ptest_list_free(p); diff --git a/tests/ptest_list.c b/tests/ptest_list.c index 081f027..c3aa107 100644 --- a/tests/ptest_list.c +++ b/tests/ptest_list.c @@ -145,6 +145,67 @@ START_TEST(test_remove) } END_TEST +START_TEST(test_remove_first) +{ + struct ptest_list *head = ptest_list_alloc(); + struct ptest_list *p; + + ptest_list_add(head, strdup("a"), NULL); + ptest_list_add(head, strdup("b"), NULL); + ptest_list_add(head, strdup("c"), NULL); + + p = ptest_list_remove(head, "a", 0); + ck_assert_ptr_nonnull(p); + ck_assert_str_eq(p->ptest, "a"); + ptest_list_free(p); + + ck_assert_ptr_null(ptest_list_search(head, "a")); + ck_assert_ptr_nonnull(ptest_list_search(head, "b")); + ck_assert_ptr_nonnull(ptest_list_search(head, "c")); + ck_assert_int_eq(ptest_list_length(head), 2); + + ptest_list_free_all(head); +} +END_TEST + +START_TEST(test_remove_last) +{ + struct ptest_list *head = ptest_list_alloc(); + struct ptest_list *p; + + ptest_list_add(head, strdup("a"), NULL); + ptest_list_add(head, strdup("b"), NULL); + ptest_list_add(head, strdup("c"), NULL); + + p = ptest_list_remove(head, "c", 0); + ck_assert_ptr_nonnull(p); + ck_assert_str_eq(p->ptest, "c"); + ptest_list_free(p); + + ck_assert_ptr_nonnull(ptest_list_search(head, "a")); + ck_assert_ptr_nonnull(ptest_list_search(head, "b")); + ck_assert_ptr_null(ptest_list_search(head, "c")); + ck_assert_int_eq(ptest_list_length(head), 2); + + ptest_list_free_all(head); +} +END_TEST + +START_TEST(test_remove_all) +{ + struct ptest_list *head = ptest_list_alloc(); + + ptest_list_add(head, strdup("a"), NULL); + ptest_list_add(head, strdup("b"), NULL); + + ck_assert_ptr_null(ptest_list_remove(head, "a", 1)); + ck_assert_ptr_null(ptest_list_remove(head, "b", 1)); + ck_assert_int_eq(ptest_list_length(head), 0); + + ptest_list_free_all(head); +} +END_TEST + Suite * ptest_list_suite() { @@ -160,6 +221,9 @@ ptest_list_suite() tcase_add_test(tc_core, test_length); tcase_add_test(tc_core, test_search); tcase_add_test(tc_core, test_remove); + tcase_add_test(tc_core, test_remove_first); + tcase_add_test(tc_core, test_remove_last); + tcase_add_test(tc_core, test_remove_all); suite_add_tcase(s, tc_core); -- 2.34.1
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