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Add tests for g_aligned_alloc()

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We want to test the API contract, by checking the return value for
zero-sized allocations, invalid alignments, and overflows.
This commit is contained in:
Emmanuele Bassi 2022-01-07 17:24:03 +00:00 committed by Philip Withnall
parent 475d574440
commit b37c99c44e
2 changed files with 119 additions and 2 deletions
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21
glib/tests/mem-overflow.c
View File

@ -34,13 +34,14 @@ static gsize a = G_MAXSIZE / 10 + 10;
static gsize b = 10;
typedef char X[10];
#define MEM_OVERFLOW_TEST(name, code) \
#define MEM_OVERFLOW_TEST(name, code) MEM_OVERFLOW_TEST_FULL(name, code, g_free)
#define MEM_OVERFLOW_TEST_FULL(name, code, free_func) \
static void \
mem_overflow_ ## name (void) \
{ \
gpointer p; \
code; \
g_free (p); \
free_func (p); \
exit (0); \
}
@ -68,6 +69,12 @@ MEM_OVERFLOW_TEST (new0_b, p = g_new0 (X, b))
MEM_OVERFLOW_TEST (renew_a, p = g_malloc (1); p = g_renew (X, p, a))
MEM_OVERFLOW_TEST (renew_b, p = g_malloc (1); p = g_renew (X, p, b))
MEM_OVERFLOW_TEST_FULL (aligned_alloc_a, p = g_aligned_alloc (sizeof(X), a, 16), g_aligned_free)
MEM_OVERFLOW_TEST_FULL (aligned_alloc_b, p = g_aligned_alloc (sizeof(X), b, 16), g_aligned_free)
MEM_OVERFLOW_TEST_FULL (aligned_alloc0_a, p = g_aligned_alloc0 (sizeof(X), a, 16), g_aligned_free)
MEM_OVERFLOW_TEST_FULL (aligned_alloc0_b, p = g_aligned_alloc0 (sizeof(X), b, 16), g_aligned_free)
static void
mem_overflow_malloc_0 (void)
{
@ -171,6 +178,12 @@ mem_overflow (void)
CHECK_SUBPROCESS_PASS (malloc_0);
CHECK_SUBPROCESS_PASS (realloc_0);
CHECK_SUBPROCESS_FAIL (aligned_alloc_a);
CHECK_SUBPROCESS_PASS (aligned_alloc_b);
CHECK_SUBPROCESS_FAIL (aligned_alloc0_a);
CHECK_SUBPROCESS_PASS (aligned_alloc0_b);
}
#ifdef __GNUC__
@ -231,6 +244,10 @@ main (int argc,
g_test_add_func ("/mem/overflow/subprocess/renew_b", mem_overflow_renew_b);
g_test_add_func ("/mem/overflow/subprocess/malloc_0", mem_overflow_malloc_0);
g_test_add_func ("/mem/overflow/subprocess/realloc_0", mem_overflow_realloc_0);
g_test_add_func ("/mem/overflow/subprocess/aligned_alloc_a", mem_overflow_aligned_alloc_a);
g_test_add_func ("/mem/overflow/subprocess/aligned_alloc_b", mem_overflow_aligned_alloc_b);
g_test_add_func ("/mem/overflow/subprocess/aligned_alloc0_a", mem_overflow_aligned_alloc0_a);
g_test_add_func ("/mem/overflow/subprocess/aligned_alloc0_b", mem_overflow_aligned_alloc0_b);
#ifdef __GNUC__
g_test_add_func ("/mem/empty-alloc", empty_alloc);

100
glib/tests/utils.c
View File

@ -915,6 +915,100 @@ test_misc_mem (void)
g_assert (a == NULL);
}
static void
aligned_alloc_nz (void)
{
gpointer a;
/* Test an alignment that’s zero */
a = g_aligned_alloc (16, sizeof(char), 0);
g_assert_null (a);
exit (0);
}
static void
aligned_alloc_npot (void)
{
gpointer a;
/* Test an alignment that’s not a power of two */
a = g_aligned_alloc (16, sizeof(char), 15);
g_assert_null (a);
exit (0);
}
static void
aligned_alloc_nmov (void)
{
gpointer a;
/* Test an alignment that’s not a multiple of sizeof(void*) */
a = g_aligned_alloc (16, sizeof(char), 4);
g_assert_null (a);
exit (0);
}
static void
test_aligned_mem (void)
{
gpointer a;
g_test_summary ("Aligned memory allocator");
a = g_aligned_alloc (0, sizeof(int), 8);
g_assert_null (a);
a = g_aligned_alloc0 (0, sizeof(int), 8);
g_assert_null (a);
a = g_aligned_alloc (16, 0, 8);
g_assert_null (a);
#define CHECK_SUBPROCESS_FAIL(name,msg) do { \
{ \
g_test_message (msg); \
g_test_trap_subprocess ("/utils/aligned-mem/subprocess/" #name, 0, 0); \
g_test_trap_assert_failed (); \
} \
} while (0)
CHECK_SUBPROCESS_FAIL (aligned_alloc_nz, "Alignment must not be zero");
CHECK_SUBPROCESS_FAIL (aligned_alloc_npot, "Alignment must be a power of two");
CHECK_SUBPROCESS_FAIL (aligned_alloc_nmov, "Alignment must be a multiple of sizeof(void*)");
}
static void
test_aligned_mem_alignment (void)
{
gchar *p;
g_test_summary ("Check that g_aligned_alloc() returns a correctly aligned pointer");
p = g_aligned_alloc (5, sizeof (*p), 256);
g_assert_nonnull (p);
g_assert_cmpuint (((guintptr) p) % 256, ==, 0);
g_aligned_free (p);
}
static void
test_aligned_mem_zeroed (void)
{
gsize n_blocks = 10;
guint *p;
gsize i;
g_test_summary ("Check that g_aligned_alloc0() zeroes out its allocation");
p = g_aligned_alloc0 (n_blocks, sizeof (*p), 16);
g_assert_nonnull (p);
for (i = 0; i < n_blocks; i++)
g_assert_cmpuint (p[i], ==, 0);
g_aligned_free (p);
}
static void
test_nullify (void)
{
@ -1084,6 +1178,12 @@ main (int argc,
g_test_add_func ("/utils/take-pointer", test_take_pointer);
g_test_add_func ("/utils/clear-source", test_clear_source);
g_test_add_func ("/utils/misc-mem", test_misc_mem);
g_test_add_func ("/utils/aligned-mem", test_aligned_mem);
g_test_add_func ("/utils/aligned-mem/subprocess/aligned_alloc_nz", aligned_alloc_nz);
g_test_add_func ("/utils/aligned-mem/subprocess/aligned_alloc_npot", aligned_alloc_npot);
g_test_add_func ("/utils/aligned-mem/subprocess/aligned_alloc_nmov", aligned_alloc_nmov);
g_test_add_func ("/utils/aligned-mem/alignment", test_aligned_mem_alignment);
g_test_add_func ("/utils/aligned-mem/zeroed", test_aligned_mem_zeroed);
g_test_add_func ("/utils/nullify", test_nullify);
g_test_add_func ("/utils/atexit", test_atexit);
g_test_add_func ("/utils/check-setuid", test_check_setuid);