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kunit/overflow: Add tests for STACK_FLEX_ARRAY_SIZE() helper

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Add a couple of tests for new STACK_FLEX_ARRAY_SIZE() helper.

Signed-off-by: Gustavo A. R. Silva <[email protected]>
Link: https://lore.kernel.org/r/c127631a03cdd7f59bfa091b9666a93bf69d0322.1745355442.git.gustavoars@kernel.org
Signed-off-by: Kees Cook <[email protected]>
This commit is contained in:
Gustavo A. R. Silva authored and Kees Cook committed 2025-05-08 09:42:05 -07:00
1 parent 190faecf64
commit 6e6500e4e4
1 file changed
+4
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lib/tests/overflow_kunit.c
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@@ -1210,6 +1210,10 @@ static void DEFINE_FLEX_test(struct kunit *test)
KUNIT_EXPECT_EQ(test, __struct_size(empty->array), 0);
KUNIT_EXPECT_EQ(test, __member_size(empty->array), 0);
KUNIT_EXPECT_EQ(test, STACK_FLEX_ARRAY_SIZE(two, array), 2);
KUNIT_EXPECT_EQ(test, STACK_FLEX_ARRAY_SIZE(eight, array), 8);
KUNIT_EXPECT_EQ(test, STACK_FLEX_ARRAY_SIZE(empty, array), 0);
/* If __counted_by is not being used, array size will have the on-stack size. */
if (!IS_ENABLED(CONFIG_CC_HAS_COUNTED_BY))
array_size_override = 2 * sizeof(s16);