+mkWeakForeignEnvzh_fast
+{
+ /* R1 = key
+ R2 = value
+ R3 = finalizer
+ R4 = pointer
+ R5 = has environment (0 or 1)
+ R6 = environment
+ */
+ W_ w, payload_words, words, p;
+
+ W_ key, val, fptr, ptr, flag, eptr;
+
+ key = R1;
+ val = R2;
+ fptr = R3;
+ ptr = R4;
+ flag = R5;
+ eptr = R6;
+
+ ALLOC_PRIM( SIZEOF_StgWeak, R1_PTR & R2_PTR & R3_PTR, mkWeakForeignEnvzh_fast );
+
+ w = Hp - SIZEOF_StgWeak + WDS(1);
+ SET_HDR(w, stg_WEAK_info, W_[CCCS]);
+
+ payload_words = 4;
+ words = BYTES_TO_WDS(SIZEOF_StgArrWords) + payload_words;
+ ("ptr" p) = foreign "C" allocateLocal(MyCapability() "ptr", words) [];
+
+ TICK_ALLOC_PRIM(SIZEOF_StgArrWords,WDS(payload_words),0);
+ SET_HDR(p, stg_ARR_WORDS_info, W_[CCCS]);
+
+ StgArrWords_words(p) = payload_words;
+ StgArrWords_payload(p,0) = fptr;
+ StgArrWords_payload(p,1) = ptr;
+ StgArrWords_payload(p,2) = eptr;
+ StgArrWords_payload(p,3) = flag;
+
+ // We don't care about the value here.
+ // Should StgWeak_value(w) be stg_NO_FINALIZER_closure or something else?
+
+ StgWeak_key(w) = key;
+ StgWeak_value(w) = val;
+ StgWeak_finalizer(w) = stg_NO_FINALIZER_closure;
+ StgWeak_cfinalizer(w) = p;
+
+ StgWeak_link(w) = W_[weak_ptr_list];
+ W_[weak_ptr_list] = w;
+
+ IF_DEBUG(weak, foreign "C" debugBelch(stg_weak_msg,w) []);
+
+ RET_P(w);
+}