kunit/overflow: Adjust for __counted_by with DEFINE_RAW_FLEX()

When a flexible array structure has a __counted_by annotation, its use
with DEFINE_RAW_FLEX() will result in the count being zero-initialized.
This is expected since one doesn't want to use RAW with a counted_by
struct. Adjust the tests to check for the condition and for compiler
support.

Reported-by: Christian Schrefl <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]/
Suggested-by: Nathan Chancellor <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Christian Schrefl <[email protected]>
Reviewed-by: Christian Schrefl <[email protected]>
Signed-off-by: Kees Cook <[email protected]>

0 files changed, 0 insertions, 0 deletions