GRUB-core-libgcrypt-fix-signed-vs-unsigned-comparison.patch

From 3a7d8309d1dcbfa71ef00687e4b10b10754487ea Mon Sep 17 00:00:00 2001
From: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Date: Sun, 20 Nov 2016 17:47:18 -0800
Subject: [PATCH] core: libgcrypt: fix signed vs unsigned comparison

With Wsign-compare enabled, gcc will complain that i is compared
against unsigned variables:

|[...]/build/grub/grub-core/lib/libgcrypt-grub/cipher/rijndael.c:
| In function 'do_setkey':
|[...]/build/grub/grub-core/lib/libgcrypt-grub/cipher/rijndael.c:173:21:
| warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
|        for (i = 0; i < keylen; i++)
|                      ^

Since i is only a loop index that takes only positive values, we can
safely make it unsigned.

Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
---
 grub-core/lib/libgcrypt/cipher/rijndael.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/deps/grub/grub-core/lib/libgcrypt/cipher/rijndael.c b/deps/grub/grub-core/lib/libgcrypt/cipher/rijndael.c
index d43b349..207813f 100644
--- a/deps/grub/grub-core/lib/libgcrypt/cipher/rijndael.c
+++ b/deps/grub/grub-core/lib/libgcrypt/cipher/rijndael.c
@@ -97,7 +97,8 @@ do_setkey (RIJNDAEL_context *ctx, const byte *key, const unsigned keylen)
   static int initialized = 0;
   static const char *selftest_failed=0;
   int ROUNDS;
-  int i,j, r, t, rconpointer = 0;
+  int j, r, t, rconpointer = 0;
+  unsigned int i;
   int KC;
   union
   {
-- 
2.9.3