X-Git-Url: https://git.cryptolib.org/?p=avr-crypto-lib.git;a=blobdiff_plain;f=mugi%2Fmugi.c;fp=mugi%2Fmugi.c;h=c90b1a1ea11ed4f522b2d50e3a8c02a47c73cdbb;hp=0be9f9af57ab5a0d63cc645c8615041cf2fe3456;hb=701cee0d98aab48dd3192c8cc7c77eb42581bc56;hpb=21bfb1fb168b3114f675f34e257b6acc557b2de8

diff --git a/mugi/mugi.c b/mugi/mugi.c
index 0be9f9a..c90b1a1 100644
--- a/mugi/mugi.c
+++ b/mugi/mugi.c
@@ -65,16 +65,19 @@ void dump_mugi_ctx(mugi_ctx_t* ctx){
 #define GF256MUL_2(a) (gf256mul(2, (a), 0x1b))
 
 uint64_t changeendian64(uint64_t a){
-	uint8_t r[8];
-	r[0] = ((uint8_t*)&a)[7];
-	r[1] = ((uint8_t*)&a)[6];
-	r[2] = ((uint8_t*)&a)[5];
-	r[3] = ((uint8_t*)&a)[4];
-	r[4] = ((uint8_t*)&a)[3];
-	r[5] = ((uint8_t*)&a)[2];
-	r[6] = ((uint8_t*)&a)[1];
-	r[7] = ((uint8_t*)&a)[0];
-	return *((uint64_t*)r);
+	union {
+		uint8_t v8[8];
+		uint64_t v64;
+	} r;
+	r.v8[0] = ((uint8_t*)&a)[7];
+	r.v8[1] = ((uint8_t*)&a)[6];
+	r.v8[2] = ((uint8_t*)&a)[5];
+	r.v8[3] = ((uint8_t*)&a)[4];
+	r.v8[4] = ((uint8_t*)&a)[3];
+	r.v8[5] = ((uint8_t*)&a)[2];
+	r.v8[6] = ((uint8_t*)&a)[1];
+	r.v8[7] = ((uint8_t*)&a)[0];
+	return r.v64;
 }
 
 static