[Minor] Adjust hashes

config.h.in

@@ -323,8 +323,12 @@ typedef off_t goffset;
 # define RSPAMD_ALIGNED(x) __declspec(align(x))
 #elif defined(__GNUC__)
 # define RSPAMD_ALIGNED(x) __attribute__((aligned(x)))
+#ifndef __clang__
 # define RSPAMD_OPTIMIZE(x) __attribute__((__optimize__ (x)))
 #else
+# define RSPAMD_OPTIMIZE(x)
+#endif
+#else
 # define RSPAMD_ALIGNED(x)
 # define RSPAMD_OPTIMIZE(x)
 #endif

src/libutil/shingles.c

@@ -109,7 +109,7 @@ rspamd_shingles_generate (GArray *input,
 			ht = RSPAMD_CRYPTOBOX_MUMHASH;
 			break;
 		default:
-			ht = RSPAMD_CRYPTOBOX_HASHFAST;
+			ht = RSPAMD_CRYPTOBOX_HASHFAST_INDEPENDENT;
 			break;
 		}
 
@@ -133,7 +133,7 @@ rspamd_shingles_generate (GArray *input,
 									*(guint64 *)keys[j]);
 					val = 0;
 					for (k = 0; k < SHINGLES_WINDOW; k ++) {
-						val ^= res[j * SHINGLES_WINDOW + k] >> (8 * k);
+						val ^= res[j * SHINGLES_WINDOW + k] >> (8 * (SHINGLES_WINDOW - k - 1));
 					}
 
 					g_assert (hlen > beg);