[tor-commits] [tor/master] Fix an alignment issue in our extensions to ed25519_donna

[nickm@xxxxxxxxxxxxxx]

commit 81e3deeb54d2f3d022655c6a51f966ef44bf6fb3
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Fri Sep 4 09:30:59 2015 -0400

    Fix an alignment issue in our extensions to ed25519_donna
    
    Apparently this only happens with clang (or with some particular
    clang versions), and only on i386.
    
    Fixes 16970; bug not in any released Tor.
    
    Found by Teor; fix from Yawning.
---
 src/ext/ed25519/donna/ed25519_tor.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ext/ed25519/donna/ed25519_tor.c b/src/ext/ed25519/donna/ed25519_tor.c
index 7f5894d..12493f7 100644
--- a/src/ext/ed25519/donna/ed25519_tor.c
+++ b/src/ext/ed25519/donna/ed25519_tor.c
@@ -323,7 +323,7 @@ int
 ed25519_donna_pubkey_from_curve25519_pubkey(unsigned char *out,
   const unsigned char *inp, int signbit)
 {
-  static const bignum25519 one = { 1 };
+  static const bignum25519 ALIGN(16) one = { 1 };
   bignum25519 ALIGN(16) u, uminus1, uplus1, inv_uplus1, y;
 
   /* Prop228: y = (u-1)/(u+1) */

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