Re: [PATCH] sha1dc: update from upstream

["Michael Felt (aixtools)" <aixtools@felt.demon.nl>]

Sent from my iPhone

> On 2 Aug 2018, at 22:50, Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote:
> 
> Update sha1dc from the latest version by the upstream
> maintainer[1]. See 2db87328ef ("Merge branch 'ab/sha1dc'", 2017-07-10)
> for the last update.
> 
> This fixes an issue where AIX was wrongly detected as a Little-endian
> instead of a Big-endian system. See [2][3][4].
> 
> 1. https://github.com/cr-marcstevens/sha1collisiondetection/commit/232357eb2ea0397388254a4b188333a227bf5b10
> 2. https://github.com/cr-marcstevens/sha1collisiondetection/pull/45
> 3. https://github.com/cr-marcstevens/sha1collisiondetection/pull/42
> 4. https://public-inbox.org/git/20180729200623.GF945730@genre.crustytoothpaste.net/
> 
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
> 
>> On Wed, Aug 01 2018, Ævar Arnfjörð Bjarmason wrote:
>> https://github.com/cr-marcstevens/sha1collisiondetection/pull/45
>> [...]
>> It should work, but as noted in the MR please test it so we can make
>> sure, and then (if you have a GitHub account) comment on the MR saying
>> it works for you.
> 
> This got merged upstream, and as noted in that upstream PR I've
> personally tested this on AIX under both GCC and IBM's xlc on the GCC
> compile farm, it works.
> 
Thanks. I already have git 2.18 in use with the manual patch. 
> sha1collisiondetection |  2 +-
> sha1dc/sha1.c          | 12 +++++++++++-
> 2 files changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/sha1collisiondetection b/sha1collisiondetection
> index 19d97bf5af..232357eb2e 160000
> --- a/sha1collisiondetection
> +++ b/sha1collisiondetection
> @@ -1 +1 @@
> -Subproject commit 19d97bf5af05312267c2e874ee6bcf584d9e9681
> +Subproject commit 232357eb2ea0397388254a4b188333a227bf5b10
> diff --git a/sha1dc/sha1.c b/sha1dc/sha1.c
> index 25eded1399..df0630bc6d 100644
> --- a/sha1dc/sha1.c
> +++ b/sha1dc/sha1.c
> @@ -93,13 +93,23 @@
> #define SHA1DC_BIGENDIAN
> 
> /* Not under GCC-alike or glibc or *BSD or newlib or <processor whitelist> */
> +#elif (defined(_AIX))
> +
> +/*
> + * Defines Big Endian on a whitelist of OSs that are known to be Big
> + * Endian-only. See
> + * https://public-inbox.org/git/93056823-2740-d072-1ebd-46b440b33d7e@felt.demon.nl/
> + */
> +#define SHA1DC_BIGENDIAN
> +
> +/* Not under GCC-alike or glibc or *BSD or newlib or <processor whitelist> or <os whitelist> */
> #elif defined(SHA1DC_ON_INTEL_LIKE_PROCESSOR)
> /*
>  * As a last resort before we do anything else we're not 100% sure
>  * about below, we blacklist specific processors here. We could add
>  * more, see e.g. https://wiki.debian.org/ArchitectureSpecificsMemo
>  */
> -#else /* Not under GCC-alike or glibc or *BSD or newlib or <processor whitelist>  or <processor blacklist> */
> +#else /* Not under GCC-alike or glibc or *BSD or newlib or <processor whitelist> or <os whitelist> or <processor blacklist> */
> 
> /* We do nothing more here for now */
> /*#error "Uncomment this to see if you fall through all the detection"*/
> -- 
> 2.18.0.345.g5c9ce644c3
>