dart-lang
diff --git a/‎pkg/analyzer/lib/src/dart/resolver/method_invocation_resolver.dart‎
Lines changed: 2 additions & 0 deletions b/‎pkg/analyzer/lib/src/dart/resolver/method_invocation_resolver.dart‎
Lines changed: 2 additions & 0 deletions
diff --git a/‎pkg/analyzer/lib/src/dart/resolver/resolution_result.dart‎
Lines changed: 3 additions & 1 deletion b/‎pkg/analyzer/lib/src/dart/resolver/resolution_result.dart‎
Lines changed: 3 additions & 1 deletion
@@ -746,6 +746,8 @@ class MethodInvocationResolver {
             type, _nameCall.name, node.methodName, ElementKind.METHOD);
         if (result.isSingle) {
           call = result.element;
+        } else if (result.isAmbiguous) {
+          return;
         }
       }
       if (call != null && call.kind == ElementKind.METHOD) {
 
@@ -23,7 +23,9 @@ class ResolutionResult {
 
   /// Initialize a newly created result to represent resolving to a single
   /// [element].
-  const ResolutionResult(this.element) : state = _ResolutionResultState.single;
+  ResolutionResult(this.element)
+      : assert(element != null),
+        state = _ResolutionResultState.single;
 
   /// Initialize a newly created result with no element and the given [state].
   const ResolutionResult._(this.state) : element = null;
Original file line number	Diff line number	Diff line change
`@@ -746,6 +746,8 @@ class MethodInvocationResolver {`
`746`	`746`	`type, _nameCall.name, node.methodName, ElementKind.METHOD);`
`747`	`747`	`if (result.isSingle) {`
`748`	`748`	`call = result.element;`
	`749`	`+ } else if (result.isAmbiguous) {`
	`750`	`+ return;`
`749`	`751`	`}`
`750`	`752`	`}`
`751`	`753`	`if (call != null && call.kind == ElementKind.METHOD) {`