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Date:      Thu, 26 May 2016 22:35:34 -0400
From:      Allan Jude <allanjude@freebsd.org>
To:        "Conrad E. Meyer" <cem@FreeBSD.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Cc:        "gjb >> Glen Barber" <gjb@FreeBSD.org>
Subject:   Re: svn commit: r300773 - in head/sys: crypto crypto/aesni crypto/sha2 crypto/siphash kern sys
Message-ID:  <0f2c3d10-d2dd-3f76-982f-91fbeeb5f3db@freebsd.org>
In-Reply-To: <201605261929.u4QJTTV5085421@repo.freebsd.org>
References:  <201605261929.u4QJTTV5085421@repo.freebsd.org>

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On 2016-05-26 15:29, Conrad E. Meyer wrote:
> Author: cem
> Date: Thu May 26 19:29:29 2016
> New Revision: 300773
> URL: https://svnweb.freebsd.org/changeset/base/300773
> 
> Log:
>   crypto routines: Hint minimum buffer sizes to the compiler
>   
>   Use the C99 'static' keyword to hint to the compiler IVs and output digest
>   sizes.  The keyword informs the compiler of the minimum valid size for a given
>   array.  Obviously not every pointer can be validated (i.e., the compiler can
>   produce false negative but not false positive reports).
>   
>   No functional change.  No ABI change.
>   
>   Sponsored by:	EMC / Isilon Storage Division
> 
> Modified:
>   head/sys/crypto/aesni/aesni.h
>   head/sys/crypto/aesni/aesni_wrap.c
>   head/sys/crypto/sha1.c
>   head/sys/crypto/sha1.h
>   head/sys/crypto/sha2/sha256.h
>   head/sys/crypto/sha2/sha256c.c
>   head/sys/crypto/sha2/sha384.h
>   head/sys/crypto/sha2/sha512.h
>   head/sys/crypto/sha2/sha512c.c
>   head/sys/crypto/siphash/siphash.c
>   head/sys/crypto/siphash/siphash.h
>   head/sys/kern/md4c.c
>   head/sys/kern/md5c.c
>   head/sys/sys/md4.h
>   head/sys/sys/md5.h
> 
> Modified: head/sys/sys/md5.h
> ==============================================================================
> --- head/sys/sys/md5.h	Thu May 26 19:17:51 2016	(r300772)
> +++ head/sys/sys/md5.h	Thu May 26 19:29:29 2016	(r300773)
> @@ -44,10 +44,6 @@ typedef struct MD5Context {
>  __BEGIN_DECLS
>  void   MD5Init (MD5_CTX *);
>  void   MD5Update (MD5_CTX *, const void *, unsigned int);
> -void   MD5Final (unsigned char [16], MD5_CTX *);
> -char * MD5End(MD5_CTX *, char *);
> -char * MD5File(const char *, char *);
> -char * MD5FileChunk(const char *, char *, off_t, off_t);
> -char * MD5Data(const void *, unsigned int, char *);
> +void   MD5Final (unsigned char[static MD5_DIGEST_LENGTH], MD5_CTX *);
>  __END_DECLS
>  #endif /* _SYS_MD5_H_ */
> 

This seems to have broken on sparc64, and other gcc based arches:

===> lib/libc (obj,all,install)
In file included from /usr/src/lib/libc/../libmd/md5.h:40,
                 from /usr/src/lib/libc/../libmd/md5c.c:42:
/usr/obj/sparc64.sparc64/usr/src/tmp/usr/include/sys/md5.h:47:
error: static or type qualifiers in abstract declarator
--- md5c.o ---
*** [md5c.o] Error code 1



-- 
Allan Jude



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