[gnutls-devel] GnuTLS | crypto-selftests: mark CFB8 block sizes tests optional (!1743)

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Daiki Ueno commented on a discussion on lib/crypto-selftests.c: https://gitlab.com/gnutls/gnutls/-/merge_requests/1743#note_1400914600

> -		if (!(flags & GNUTLS_SELF_TEST_FLAG_ALL) || ret < 0) \
> -		return ret
> +#define CASE(x, func, vectors)			\
> +	case x:					\
> +		CHECK(x, func, vectors)
>  
> -#define NON_FIPS_CASE(x, func, vectors)                                      \
> -	case x:                                                              \
> -		if (_gnutls_fips_mode_enabled() == 0) {                      \
> -			ret = func(x, V(vectors), flags);                    \
> -			if (!(flags & GNUTLS_SELF_TEST_FLAG_ALL) || ret < 0) \
> -				return ret;                                  \
> -		}
> +#define NON_FIPS_CASE(x, func, vectors)			\
> +	case x:						\
> +		if (_gnutls_fips_mode_enabled() == 0)	\

It's actually deliberate because otherwise a stray ";" will be inserted when writing `NON_FIPS_CASE(...);`, though the original code has this issue as well. Perhaps we could use the `do { ... } while (0)` idiom though it might be too much here.

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