Issue mcp-graveyard/UXP%1725 - Fix logic in PerformPromiseAllSettled.

This function essentially appears to work as written, there was an issue with it returning false too early in some situations that prevented it from working properly.

1 files changed, 31 insertions, 28 deletions

diff --git a/js/src/builtin/Promise.cpp b/js/src/builtin/Promise.cpp
index 8ead6d9e7..faba01095 100644
--- a/js/src/builtin/Promise.cpp
+++ b/js/src/builtin/Promise.cpp
@@ -1963,40 +1963,43 @@ PerformPromiseAllSettled(JSContext *cx, JS::ForOfIterator& iterator, HandleObjec
 
         RootedValue nextPromise(cx);
         RootedValue staticResolve(cx);
-        if (!GetProperty(cx, CVal, cx->names().resolve, &staticResolve))
-            return false;
-        RootedValue staticReject(cx);
-        if (!GetProperty(cx, CVal, cx->names().reject, &staticReject))
+	RootedValue staticReject(cx);
+
+	// Because Promise.allSettled can continue whether the promise is fulfilled or rejected, we 
+	// should only return false if neither condition is true.
+
+        if (!GetProperty(cx, CVal, cx->names().resolve, &staticResolve) && 
+	    !GetProperty(cx, CVal, cx->names().reject, &staticReject))
             return false;
 
         FixedInvokeArgs<1> resolveArgs(cx);
         resolveArgs[0].set(nextValue);
-        if (!Call(cx, staticResolve, CVal, resolveArgs, &nextPromise))
-            return false;
         FixedInvokeArgs<1> rejectArgs(cx);
         rejectArgs[0].set(nextValue);
-        if (!Call(cx, staticReject, CVal, rejectArgs, &nextPromise))
-            return false;
-
-        RootedFunction resolveFunc(cx, NewNativeFunction(cx, PromiseAllSettledResolveElementFunction,
-                                                         1, nullptr,
-                                                         gc::AllocKind::FUNCTION_EXTENDED,
-                                                         GenericObject));
-        if (!resolveFunc)
-            return false;
-        RootedFunction rejectFunc(cx, NewNativeFunction(cx, PromiseAllSettledRejectElementFunction,
-                                                        1, nullptr,
-                                                        gc::AllocKind::FUNCTION_EXTENDED,
-                                                        GenericObject));
-        if (!rejectFunc)
-            return false;
-
-        resolveFunc->setExtendedSlot(PromiseAllResolveElementFunctionSlot_Data, dataHolderVal);
-        resolveFunc->setExtendedSlot(PromiseAllResolveElementFunctionSlot_ElementIndex,
-                                     Int32Value(index));
-        rejectFunc->setExtendedSlot(PromiseAllResolveElementFunctionSlot_Data, dataHolderVal);
-        rejectFunc->setExtendedSlot(PromiseAllResolveElementFunctionSlot_ElementIndex,
-                                    Int32Value(index));
+        if (!Call(cx, staticResolve, CVal, resolveArgs, &nextPromise) && 
+	    !Call(cx, staticReject, CVal, rejectArgs, &nextPromise))
+            return false;
+
+		
+	RootedFunction resolveFunc(cx, NewNativeFunction(cx, PromiseAllSettledResolveElementFunction,
+			           1, nullptr,
+			           gc::AllocKind::FUNCTION_EXTENDED,
+			           GenericObject));
+		
+	RootedFunction rejectFunc(cx, NewNativeFunction(cx, PromiseAllSettledRejectElementFunction,
+				  1, nullptr,
+				  gc::AllocKind::FUNCTION_EXTENDED,
+				  GenericObject));
+	if (!resolveFunc && !rejectFunc) {
+	     return false;
+	}
+		
+	resolveFunc->setExtendedSlot(PromiseAllResolveElementFunctionSlot_Data, dataHolderVal);
+	resolveFunc->setExtendedSlot(PromiseAllResolveElementFunctionSlot_ElementIndex,
+				Int32Value(index));
+	rejectFunc->setExtendedSlot(PromiseAllResolveElementFunctionSlot_Data, dataHolderVal);
+	rejectFunc->setExtendedSlot(PromiseAllResolveElementFunctionSlot_ElementIndex,
+				Int32Value(index));
 
         dataHolder->increaseRemainingCount();