Fix crash in inference

pkg/compiler/lib/src/inferrer/inferrer_engine.dart

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:kernel/ast.dart' as ir;
 
 import '../common.dart';
 import '../common/names.dart';
 import '../compiler.dart';
 import '../constants/expressions.dart';
@@ skipping 373 matching lines @@
       } else if (info is CallSiteTypeInformation) {
         if (info is StaticCallSiteTypeInformation &&
             info.selector != null &&
             info.selector.isCall) {
           // This is a constructor call to a class with a call method. So we
           // need to trace the call method here.
           MethodElement calledElement = info.calledElement;
           assert(calledElement.isGenerativeConstructor);
           ClassElement cls = calledElement.enclosingClass;
           MethodElement callMethod = cls.lookupMember(Identifiers.call);
+          if (callMethod == null) {
+            callMethod = cls.lookupMember(Identifiers.noSuchMethod_);

[Siggi Cherem (dart-lang), 2017/07/11 16:53:39]

I don't recall this changing in your CLs last week... did we drop this recently
or was the bug for an issue that was failing long ago as well?

[Johnni Winther, 2017/07/12 08:13:07]

Ancient bug!

+          }
           assert(callMethod != null, failedAt(cls));
           Iterable<FunctionEntity> elements = [callMethod];
           trace(elements, new ClosureTracerVisitor(elements, info, this));
         } else {
           // We only are interested in functions here, as other targets
           // of this closure call are not a root to trace but an intermediate
           // for some other function.
           Iterable<FunctionEntity> elements = new List<FunctionEntity>.from(
               info.callees.where((e) => e.isFunction));
           trace(elements, new ClosureTracerVisitor(elements, info, this));
@@ skipping 700 matching lines @@
   /**
    * Records that the captured variable [local] is read.
    */
   void recordCapturedLocalRead(Local local) {}
 
   /**
    * Records that the variable [local] is being updated.
    */
   void recordLocalUpdate(Local local, TypeInformation type) {}
 }