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Re: [Qemu-devel] [PATCH v3 1/3] crypto: fix build with nettle >= 3.0.0


From: Daniel P. Berrange
Subject: Re: [Qemu-devel] [PATCH v3 1/3] crypto: fix build with nettle >= 3.0.0
Date: Fri, 17 Jul 2015 11:54:37 +0100
User-agent: Mutt/1.5.23 (2014-03-12)

On Thu, Jul 16, 2015 at 06:03:59PM +0200, Radim Krčmář wrote:
> In nettle 3, cbc_encrypt() accepts 'nettle_cipher_func' instead of
> 'nettle_crypt_func' and these two differ in 'const' qualifier of the
> first argument.  The build fails with:
> 
>   In file included from crypto/cipher.c:71:0:
>   ./crypto/cipher-nettle.c: In function ‘qcrypto_cipher_encrypt’:
>   ./crypto/cipher-nettle.c:154:38: error: passing argument 2 of
>   ‘nettle_cbc_encrypt’ from incompatible pointer type
>            cbc_encrypt(ctx->ctx_encrypt, ctx->alg_encrypt,
>                                                ^
>   In file included from ./crypto/cipher-nettle.c:24:0,
>                    from crypto/cipher.c:71:
>   /usr/include/nettle/cbc.h:48:1: note: expected
>   ‘void (*)(const void *, size_t, uint8_t *, const uint8_t *)
>   but argument is of type
>   ‘void (*)(      void *, size_t, uint8_t *, const uint8_t *)
> 
> To allow both versions, we switch to the new definition and #if typedef
> it for old versions.
> 
> Signed-off-by: Radim Krčmář <address@hidden>
> ---
>  v3: no change
>  v2: fix typo in crypto
> 
>  configure              |  4 +++-
>  crypto/cipher-nettle.c | 16 ++++++++++------
>  2 files changed, 13 insertions(+), 7 deletions(-)

Reviewed-by: Daniel P. Berrange <address@hidden>

Regards,
Daniel
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