1 files changed, 13 insertions, 0 deletions
diff --git a/src/btreeInt.h b/src/btreeInt.h
index 92a4d4469..1ccdb0839 100644
--- a/src/btreeInt.h
+++ b/src/btreeInt.h
@@ -691,3 +691,16 @@ struct IntegrityCk {
 #define put2byte(p,v) ((p)[0] = (u8)((v)>>8), (p)[1] = (u8)(v))
 #define get4byte sqlite3Get4byte
 #define put4byte sqlite3Put4byte
+
+/*
+** get2byteAligned(), unlike get2byte(), requires that its argument point to a
+** two-byte aligned address.  get2bytea() is only used for accessing the
+** cell addresses in a btree header.
+*/
+#if SQLITE_BYTEORDER==4321
+# define get2byteAligned(x)  (*(u16*)(x))
+#elif SQLITE_BYTEORDER==1234 && defined(__GNUC__)
+# define get2byteAligned(x)  __builtin_bswap16(*(u16*)(x))
+#else
+# define get2byteAligned(x)  ((x)[0]<<8 | (x)[1])
+#endif