diff -up qt-everywhere-opensource-src-4.6.2/src/3rdparty/webkit/JavaScriptCore/wtf/Platform.h.sparc qt-everywhere-opensource-src-4.6.2/src/3rdparty/webkit/JavaScriptCore/wtf/Platform.h
--- qt-everywhere-opensource-src-4.6.2/src/3rdparty/webkit/JavaScriptCore/wtf/Platform.h.sparc	2010-03-23 10:39:06.138490870 -0400
+++ qt-everywhere-opensource-src-4.6.2/src/3rdparty/webkit/JavaScriptCore/wtf/Platform.h	2010-03-23 10:42:09.660492875 -0400
@@ -729,7 +729,10 @@
 #endif
 
 #if !defined(WTF_USE_JSVALUE64) && !defined(WTF_USE_JSVALUE32) && !defined(WTF_USE_JSVALUE32_64)
-#if (PLATFORM(X86_64) && (PLATFORM(UNIX) || PLATFORM(WIN_OS))) || PLATFORM(IA64) || PLATFORM(ALPHA)
+#if (PLATFORM(X86_64) && (PLATFORM(UNIX) || PLATFORM(WIN_OS))) \
+    || PLATFORM(IA64)  \
+    || PLATFORM(ALPHA) \
+    || PLATFORM(SPARC64)
 #define WTF_USE_JSVALUE64 1
 #elif PLATFORM(ARM) || PLATFORM(PPC64)
 #define WTF_USE_JSVALUE32 1