Fix crash while inferencing instance field type.

pkg/analyzer/test/src/summary/linker_test.dart

 // Copyright (c) 2016, 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:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/link.dart';
 import 'package:test/test.dart';
@@ skipping 333 matching lines @@
     addBundle('/a.ds', bundle);
     createLinker('''
 import 'a.dart';
 var y = C.x;
 ''');
     LibraryElementForLink library = linker.getLibrary(linkerInputs.testDartUri);
     expect(_getVariable(library.getContainedName('y')).inferredType.toString(),
         '(D) → E');
   }
 
+  void test_inferredType_instanceField_conditional_genericFunctions() {
+    createLinker('''
+class C {
+  final f = true ? <T>(T t) => 0 : <T>(T t) => 1;
+}
+''');
+    LibraryElementForLink library = linker.getLibrary(linkerInputs.testDartUri);
+    library.libraryCycleForLink.ensureLinked();
+    ClassElementForLink_Class cls = library.getContainedName('C');
+    expect(cls.fields, hasLength(1));
+    var field = cls.fields[0];
+    expect(field.type.toString(), '(<bottom>) → dynamic');
+  }
+
   void test_inferredType_instanceField_dynamic() {
     createLinker('''
 var x;
 class C {
   var f = x; // Inferred type: dynamic
 }
 ''');
     LibraryElementForLink library = linker.getLibrary(linkerInputs.testDartUri);
     library.libraryCycleForLink.ensureLinked();
     ClassElementForLink_Class cls = library.getContainedName('C');
@@ skipping 587 matching lines @@
    */
   EntityRef _lookupInferredType(LinkedUnit unit, int slot) {
     for (EntityRef ref in unit.types) {
       if (ref.slot == slot) {
         return ref;
       }
     }
     return null;
   }
 }