diff -up qtwebkit-2.2.2-source/Source/JavaScriptCore/wtf/OSAllocatorPosix.cpp.me qtwebkit-2.2.2-source/Source/JavaScriptCore/wtf/OSAllocatorPosix.cpp
diff -up qtwebkit-2.2.2-source/Source/JavaScriptCore/wtf/PageAllocationAligned.cpp.me qtwebkit-2.2.2-source/Source/JavaScriptCore/wtf/PageAllocationAligned.cpp
--- qtwebkit-2.2.2-source/Source/JavaScriptCore/wtf/PageAllocationAligned.cpp.me	2013-01-11 22:33:35.233535266 +0100
+++ qtwebkit-2.2.2-source/Source/JavaScriptCore/wtf/PageAllocationAligned.cpp	2013-01-11 22:53:23.706822547 +0100
@@ -50,7 +50,9 @@ PageAllocationAligned PageAllocationAlig
     vm_map(current_task(), &address, size, alignmentMask, flags, MEMORY_OBJECT_NULL, 0, FALSE, protection, PROT_READ | PROT_WRITE | PROT_EXEC, VM_INHERIT_DEFAULT);
     return PageAllocationAligned(reinterpret_cast<void*>(address), size);
 #else
-    size_t alignmentDelta = alignment - pageSize();
+    size_t pagesize =  pageSize();
+    if (alignment < pagesize) alignment = pagesize;
+    size_t alignmentDelta = alignment - pagesize;
 
     // Resererve with suffcient additional VM to correctly align.
     size_t reservationSize = size + alignmentDelta;