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NPE in StaticTypeAnalyze when for-in is unresolved #33370

scheglov opened this Issue Jun 6, 2018 · 1 comment


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commented Jun 6, 2018

I was typing something like, an maybe _addedRoots was incomplete and unresolved.

    for (var previousRoot in _addedRoots)

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Version information

  • 2.0.0-edge.9672d69a0691ef66a4b554537e26c8c0f95fcbe6
  • IC-182.SNAPSHOT, JRE 1.8.0_112-b16x64 Oracle Corporation, OS Mac OS X(x86_64) v10.13.4 unknown, screens 1680x1050 Retina


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Dart analysis server, SDK version 2.0.0-edge.9672d69a0691ef66a4b554537e26c8c0f95fcbe6, server version 1.20.3, error: Analysis failed: /Users/scheglov/dart/pub/lib/src/dart.dart context: exception_20180606_115820_116
NoSuchMethodError: The method 'resolveToBound' was called on null.
Receiver: null
Tried calling: resolveToBound(Instance of 'InterfaceTypeImpl')
#0      Object.noSuchMethod (dart:core-patch/dart:core/object_patch.dart:46)
#1      StaticTypeAnalyzer._findIteratedType (package:analyzer/src/generated/static_type_analyzer.dart:1668:17)
#2      StaticTypeAnalyzer._inferForEachLoopVariableType (package:analyzer/src/generated/static_type_analyzer.dart:1924:33)
#3      StaticTypeAnalyzer.visitDeclaredIdentifier (package:analyzer/src/generated/static_type_analyzer.dart:496:7)
#4      DeclaredIdentifierImpl.accept (package:analyzer/src/dart/ast/ast.dart:3385:49)
#5      ResolverVisitor.visitNode (package:analyzer/src/generated/resolver.dart:6341:10)
#6      UnifyingAstVisitor.visitDeclaredIdentifier (package:analyzer/dart/ast/visitor.dart:2971:57)
#7      ScopedVisitor.visitDeclaredIdentifier (package:analyzer/src/generated/resolver.dart:7527:34)
#8      DeclaredIdentifierImpl.accept (package:analyzer/src/dart/ast/ast.dart:3385:49)
#9      ResolverVisitor.visitForEachStatementInScope (package:analyzer/src/generated/resolver.dart:5996:19)
#10     ScopedVisitor.visitForEachStatement (package:analyzer/src/generated/resolver.dart:7584:7)

@bwilkerson bwilkerson added the type-bug label Aug 29, 2018

@bwilkerson bwilkerson added this to the Dart2.1 milestone Aug 29, 2018

@scheglov scheglov self-assigned this Sep 4, 2018


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commented Sep 4, 2018

dart-bot pushed a commit that referenced this issue Sep 4, 2018

Fix for for-in when iterable does not have a type.

Bug: #33370
Change-Id: I22ee3c5861ecaa3e6b2bc0f00e7f04191bcd7e78
Reviewed-by: Brian Wilkerson <>
Commit-Queue: Konstantin Shcheglov <>

@scheglov scheglov closed this Sep 4, 2018

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