Backout 61d052e202c8 (bug 647367) due to Windows bustage.

js/src/jsatom.cpp

@@ -15,6 +15,7 @@
 
 #include "jstypes.h"
 #include "jsutil.h"
+#include "jshash.h"
 #include "jsprf.h"
 #include "jsapi.h"
 #include "jsatom.h"
@@ -42,6 +43,12 @@ using namespace js::gc;
 
 const size_t JSAtomState::commonAtomsOffset = offsetof(JSAtomState, emptyAtom);
 
+/*
+ * ATOM_HASH assumes that JSHashNumber is 32-bit even on 64-bit systems.
+ */
+JS_STATIC_ASSERT(sizeof(JSHashNumber) == 4);
+JS_STATIC_ASSERT(sizeof(JSAtom *) == JS_BYTES_PER_WORD);
+
 const char *
 js_AtomToPrintableString(JSContext *cx, JSAtom *atom, JSAutoByteString *bytes)
 {