$OpenBSD: patch-source_layout_LESwaps_h,v 1.1 2009/01/27 22:11:15 landry Exp $

Suggested by jasper. workaround for broken font tables.

--- source/layout/LESwaps.h.orig	Mon Sep 22 21:04:12 2008
+++ source/layout/LESwaps.h	Sun Nov 16 15:12:06 2008
@@ -2,6 +2,7 @@
 /*
  *
  * (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved
+ * with additions by Sun Microsystems 2002-2006
  *
  */
 
@@ -17,12 +18,21 @@
 
 U_NAMESPACE_BEGIN
 
+// There exist popular font file which contain unaligned tables
+// (e.g. "Watanabe Gothic"'s "mort" table)
+// On some platforms unaligned memory accesses cause a crash.
+// The ALLOW_UNALIGNED hack prevents these crashes by assuming that
+// every use of the SWAPx macros in ICU's layout engine is intended
+// for loading a big endian value and replaces them appropriately.
+#define ALLOW_UNALIGNED_HACK
+
 /**
  * A convenience macro which invokes the swapWord member function
  * from a concise call.
  *
  * @stable ICU 2.8
  */
+#ifndef ALLOW_UNALIGNED_HACK
 #define SWAPW(value) LESwaps::swapWord((const le_uint16 &) (value))
 
 /**
@@ -32,6 +42,25 @@ U_NAMESPACE_BEGIN
  * @stable ICU 2.8
  */
 #define SWAPL(value) LESwaps::swapLong((const le_uint32 &) (value))
+
+#else // ALLOW_UNALIGNED_HACK
+
+#define SWAPW(rValue) loadBigEndianWord(reinterpret_cast<const le_uint16&>(rValue))
+#define SWAPL(rValue) loadBigEndianLong(reinterpret_cast<const le_uint32&>(rValue))
+
+inline le_uint16 loadBigEndianWord( const le_uint16& rValue )
+{
+    const le_uint8* p = reinterpret_cast<const le_uint8*>(&rValue);
+    return ((p[0] << 8) + p[1]);
+}
+
+inline le_uint32 loadBigEndianLong( const le_uint32& rValue )
+{
+    const le_uint8* p = reinterpret_cast<const le_uint8*>(&rValue);
+    return ((p[0]<<24) + (p[1]<<16) + (p[2]<<8) +p[3]);
+}
+
+#endif // ALLOW_UNALIGNED_HACK
 
 /**
  * This class is used to access data which stored in big endian order