File xen.c6ad5a701b9a6df443a6c98d9e7201c958bbcafc.patch of Package xen
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 */
