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list: add debug sanity checks 

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/19377)
This commit is contained in:
Pauli 2022-10-19 16:00:52 +11:00
parent b6f1b059ee
commit 3077341126
2 changed files with 34 additions and 2 deletions
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28
include/internal/list.h
View File

@ -12,6 +12,13 @@
# pragma once
# include <string.h>
# include <assert.h>
# ifdef NDEBUG
# define OSSL_LIST_DBG(x)
# else
# define OSSL_LIST_DBG(x) x;
# endif
/* Define a list structure */
# define OSSL_LIST(name) OSSL_LIST_ ## name
@ -20,6 +27,7 @@
# define OSSL_LIST_MEMBER(name, type) \
struct { \
type *next, *prev; \
OSSL_LIST_DBG(struct ossl_list_st_ ## name *list) \
} ossl_list_ ## name
# define DEFINE_LIST_OF(name, type) \
@ -52,26 +60,38 @@
static ossl_unused ossl_inline type * \
ossl_list_##name##_head(const OSSL_LIST(name) *list) \
{ \
assert(list->alpha == NULL \
|| list->alpha->ossl_list_ ## name.list == list); \
return list->alpha; \
} \
static ossl_unused ossl_inline type * \
ossl_list_##name##_tail(const OSSL_LIST(name) *list) \
{ \
assert(list->omega == NULL \
|| list->omega->ossl_list_ ## name.list == list); \
return list->omega; \
} \
static ossl_unused ossl_inline type * \
ossl_list_##name##_next(const type *elem) \
{ \
assert(elem->ossl_list_ ## name.next == NULL \
|| elem->ossl_list_ ## name.next \
->ossl_list_ ## name.prev == elem); \
return elem->ossl_list_ ## name.next; \
} \
static ossl_unused ossl_inline type * \
ossl_list_##name##_prev(const type *elem) \
{ \
assert(elem->ossl_list_ ## name.prev == NULL \
|| elem->ossl_list_ ## name.prev \
->ossl_list_ ## name.next == elem); \
return elem->ossl_list_ ## name.prev; \
} \
static ossl_unused ossl_inline void \
ossl_list_##name##_remove(OSSL_LIST(name) *list, type *elem) \
{ \
assert(elem->ossl_list_ ## name.list == list); \
OSSL_LIST_DBG(elem->ossl_list_ ## name.list = NULL) \
if (list->alpha == elem) \
list->alpha = elem->ossl_list_ ## name.next; \
if (list->omega == elem) \
@ -89,6 +109,8 @@
static ossl_unused ossl_inline void \
ossl_list_##name##_insert_head(OSSL_LIST(name) *list, type *elem) \
{ \
assert(elem->ossl_list_ ## name.list == NULL); \
OSSL_LIST_DBG(elem->ossl_list_ ## name.list = list) \
if (list->alpha != NULL) \
list->alpha->ossl_list_ ## name.prev = elem; \
elem->ossl_list_ ## name.next = list->alpha; \
@ -101,6 +123,8 @@
static ossl_unused ossl_inline void \
ossl_list_##name##_insert_tail(OSSL_LIST(name) *list, type *elem) \
{ \
assert(elem->ossl_list_ ## name.list == NULL); \
OSSL_LIST_DBG(elem->ossl_list_ ## name.list = list) \
if (list->omega != NULL) \
list->omega->ossl_list_ ## name.next = elem; \
elem->ossl_list_ ## name.prev = list->omega; \
@ -114,6 +138,8 @@
ossl_list_##name##_insert_before(OSSL_LIST(name) *list, type *e, \
type *elem) \
{ \
assert(elem->ossl_list_ ## name.list == NULL); \
OSSL_LIST_DBG(elem->ossl_list_ ## name.list = list) \
elem->ossl_list_ ## name.next = e; \
elem->ossl_list_ ## name.prev = e->ossl_list_ ## name.prev; \
if (e->ossl_list_ ## name.prev != NULL) \
@ -127,6 +153,8 @@
ossl_list_##name##_insert_after(OSSL_LIST(name) *list, type *e, \
type *elem) \
{ \
assert(elem->ossl_list_ ## name.list == NULL); \
OSSL_LIST_DBG(elem->ossl_list_ ## name.list = list) \
elem->ossl_list_ ## name.prev = e; \
elem->ossl_list_ ## name.next = e->ossl_list_ ## name.next; \
if (e->ossl_list_ ## name.next != NULL) \

8
test/list_test.c
View File

@ -43,6 +43,8 @@ static int test_fizzbuzz(void)
return 0;
for (i = 1; i < nelem; i++) {
ossl_list_fizz_init_elem(elem + i);
ossl_list_buzz_init_elem(elem + i);
elem[i].n = i;
if (i % 3 == 0) {
ossl_list_fizz_insert_tail(&a, elem + i);
@ -99,8 +101,10 @@ static int test_insert(void)
int n = 1;
ossl_list_int_init(&l);
for (i = 0; i < OSSL_NELEM(elem); i++)
elem[i].n = i;
for (i = 0; i < OSSL_NELEM(elem); i++) {
ossl_list_int_init_elem(elem + i);
elem[i].n = i;
}
/* Check various insert options - head, tail, middle */
ossl_list_int_insert_head(&l, elem + 3); /* 3 */