Reset serialized expression to empty on StateError.

pkg/analyzer/lib/src/summary/link.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.
 
 /**
  * This library is capable of producing linked summaries from unlinked
  * ones (or prelinked ones).  It functions by building a miniature
  * element model to represent the contents of the summaries, and then
  * scanning the element model to gather linked information and adding
  * it to the summary data structures.
@@ skipping 1962 matching lines @@
 
   ExprTypeComputer._(this.function, this.unit, this.library, this.linker,
       this.typeProvider, this.unlinkedConst);
 
   DartType compute() {
     if (unlinkedConst == null) {
       // No function body was stored for this function, so we can't infer its
       // return type.  Assume `dynamic`.
       return DynamicTypeImpl.instance;
     }
+    // If no operations, we cannot compute the type.  Assume `dynamic`.
+    if (unlinkedConst.operations.isEmpty) {
+      return DynamicTypeImpl.instance;
+    }
     // Perform RPN evaluation of the constant, using a stack of inferred types.
     for (UnlinkedExprOperation operation in unlinkedConst.operations) {
       switch (operation) {
         case UnlinkedExprOperation.pushInt:
           intPtr++;
           stack.add(typeProvider.intType);
           break;
         case UnlinkedExprOperation.pushLongInt:
           int numInts = _getNextInt();
           intPtr += numInts;
@@ skipping 3005 matching lines @@
    * there are no type parameters in scope.
    */
   TypeParameterizedElementMixin get _typeParameterContext;
 
   @override
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 
   @override
   String toString() => '$enclosingElement.$name';
 }