Reset serialized expression to empty on StateError.

pkg/analyzer/lib/src/summary/link.dart

Index: pkg/analyzer/lib/src/summary/link.dart
diff --git a/pkg/analyzer/lib/src/summary/link.dart b/pkg/analyzer/lib/src/summary/link.dart
index 0587df1322e7bb2621550c509412fd6c96ea3054..87bbebc6cea1a915e530ca96cb0514b4929a0bdc 100644
--- a/pkg/analyzer/lib/src/summary/link.dart
+++ b/pkg/analyzer/lib/src/summary/link.dart
@@ -1980,6 +1980,10 @@ class ExprTypeComputer {
       // 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) {