File xen.c6ad5a701b9a6df443a6c98d9e7201c958bbcafc.patch of Package xen

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File xen.c6ad5a701b9a6df443a6c98d9e7201c958bbcafc.patch of Package xen (Revision 3b077056294bcb49994ea3227248b4ad)

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From: Jan Beulich <jbeulich@suse.com>
Date: Thu, 4 Mar 2021 16:47:51 +0100
Subject: c6ad5a701b9a6df443a6c98d9e7201c958bbcafc

crypto: adjust rijndaelEncrypt() prototype for gcc11

The upcoming release complains, not entirely unreasonably:

In file included from rijndael.c:33:
.../xen/include/crypto/rijndael.h:55:53: note: previously declared as 'const unsigned char[]'
   55 | void    rijndaelEncrypt(const unsigned int [], int, const unsigned char [],
      |                                                     ^~~~~~~~~~~~~~~~~~~~~~
rijndael.c:865:8: error: argument 4 of type 'u8[16]' {aka 'unsigned char[16]'} with mismatched bound [-Werror=array-parameter=]
  865 |     u8 ct[16])
      |     ~~~^~~~~~
In file included from rijndael.c:33:
.../xen/include/crypto/rijndael.h:56:13: note: previously declared as 'unsigned char[]'
   56 |             unsigned char []);
      |             ^~~~~~~~~~~~~~~~

Simply declare the correct array dimensions right away. This then allows
compilers to apply checking at call sites, which seems desirable anyway.

For the moment I'm leaving untouched the disagreement between u8/u32
used in the function definition and unsigned {char,int} used in the
declaration, as making this consistent would call for touching further
functions.

Reported-by: Charles Arnold <carnold@suse.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Release-Acked-by: Ian Jackson <iwj@xenproject.org>
---
 xen/include/crypto/rijndael.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/xen/include/crypto/rijndael.h
+++ b/xen/include/crypto/rijndael.h
@@ -43,16 +43,16 @@ typedef struct {
 	int	Nr;			/* key-length-dependent number of rounds */
 	u32	ek[4*(AES_MAXROUNDS + 1)];	/* encrypt key schedule */
 	u32	dk[4*(AES_MAXROUNDS + 1)];	/* decrypt key schedule */
 } rijndael_ctx;
 
 int	 rijndael_set_key(rijndael_ctx *, const u_char *, int);
 int	 rijndael_set_key_enc_only(rijndael_ctx *, const u_char *, int);
 void	 rijndael_decrypt(rijndael_ctx *, const u_char *, u_char *);
 void	 rijndael_encrypt(rijndael_ctx *, const u_char *, u_char *);
 
 int	rijndaelKeySetupEnc(unsigned int [], const unsigned char [], int);
 int	rijndaelKeySetupDec(unsigned int [], const unsigned char [], int);
-void	rijndaelEncrypt(const unsigned int [], int, const unsigned char [],
-	    unsigned char []);
+void	rijndaelEncrypt(const unsigned int [], int, const unsigned char [16],
+	    unsigned char [16]);
 
 #endif /* __RIJNDAEL_H */

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File xen.c6ad5a701b9a6df443a6c98d9e7201c958bbcafc.patch of Package xen (Revision 3b077056294bcb49994ea3227248b4ad)

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