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kernel/CFE crash: RangeError in Class.superclassConstraints #46161

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jensjoha opened this issue May 27, 2021 · 0 comments
Open

kernel/CFE crash: RangeError in Class.superclassConstraints #46161

jensjoha opened this issue May 27, 2021 · 0 comments
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area-front-end Use area-front-end for front end / CFE / kernel format related issues.

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@jensjoha
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Crash when compiling null,
at character offset null:
RangeError (index): Invalid value: Valid value range is empty: 1
#0      List.[] (dart:core-patch/growable_array.dart:254:60)
#1      Class.superclassConstraints (package:kernel/ast.dart:1090:73)
#2      ClassBuilderImpl.checkMixinApplication (package:front_end/src/fasta/builder/class_builder.dart:801:51)
#3      SourceLoader.checkMixins (package:front_end/src/fasta/source/source_loader.dart:1165:19)
#4      KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:339:14)
<asynchronous suspension>
#5      withCrashReporting (package:front_end/src/fasta/crash.dart:121:12)
<asynchronous suspension>
#6      Outline.run.<anonymous closure> (file:///usr/local/google/home/jensj/code/dart-sdk/sdk/pkg/front_end/test/fasta/testing/suite.dart:1850:21)
<asynchronous suspension>
#7      Outline.run (file:///usr/local/google/home/jensj/code/dart-sdk/sdk/pkg/front_end/test/fasta/testing/suite.dart:1837:12)
<asynchronous suspension>
#8      ChainContext.run.doStep.<anonymous closure> (package:testing/src/chain.dart:188:22)
<asynchronous suspension>

or with assertions enabled:

'package:kernel/ast.dart': Failed assertion: line 1087 pos 14: 'currentClass.implementedTypes.length == 2': is not true.
#0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:46:39)
#1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5)
#2      Class.superclassConstraints (package:kernel/ast.dart:1087:14)
#3      ClassBuilderImpl.checkMixinApplication (package:front_end/src/fasta/builder/class_builder.dart:801:51)
#4      SourceLoader.checkMixins (package:front_end/src/fasta/source/source_loader.dart:1165:19)
#5      KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:339:14)
<asynchronous suspension>
#6      withCrashReporting (package:front_end/src/fasta/crash.dart:121:12)
<asynchronous suspension>
#7      Outline.run.<anonymous closure> (file:///usr/local/google/home/jensj/code/dart-sdk/sdk/pkg/front_end/test/fasta/testing/suite.dart:1850:21)
<asynchronous suspension>
#8      Outline.run (file:///usr/local/google/home/jensj/code/dart-sdk/sdk/pkg/front_end/test/fasta/testing/suite.dart:1837:12)
<asynchronous suspension>
#9      ChainContext.run.doStep.<anonymous closure> (package:testing/src/chain.dart:188:22)
<asynchronous suspension>

Reproduction at https://dart-review.googlesource.com/c/sdk/+/201562

/cc @johnniwinther
@jensjoha jensjoha added the area-front-end Use area-front-end for front end / CFE / kernel format related issues. label May 27, 2021
dart-bot pushed a commit that referenced this issue May 27, 2021
@jensjoha
[CFE] Reproduce crash Class.superclassConstraints RangeError
33aac34 
```
Crash when compiling null,
at character offset null:
RangeError (index): Invalid value: Valid value range is empty: 1
#0      List.[] (dart:core-patch/growable_array.dart:254:60)
#1      Class.superclassConstraints (package:kernel/ast.dart:1090:73)
#2      ClassBuilderImpl.checkMixinApplication (package:front_end/src/fasta/builder/class_builder.dart:801:51)
#3      SourceLoader.checkMixins (package:front_end/src/fasta/source/source_loader.dart:1165:19)
#4      KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:339:14)
<asynchronous suspension>
#5      withCrashReporting (package:front_end/src/fasta/crash.dart:121:12)
<asynchronous suspension>
#6      Outline.run.<anonymous closure> (file:///usr/local/google/home/jensj/code/dart-sdk/sdk/pkg/front_end/test/fasta/testing/suite.dart:1850:21)
<asynchronous suspension>
#7      Outline.run (file:///usr/local/google/home/jensj/code/dart-sdk/sdk/pkg/front_end/test/fasta/testing/suite.dart:1837:12)
<asynchronous suspension>
#8      ChainContext.run.doStep.<anonymous closure> (package:testing/src/chain.dart:188:22)
<asynchronous suspension>
```

or with assertions enabled:

```
'package:kernel/ast.dart': Failed assertion: line 1087 pos 14: 'currentClass.implementedTypes.length == 2': is not true.
#0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:46:39)
#1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5)
#2      Class.superclassConstraints (package:kernel/ast.dart:1087:14)
#3      ClassBuilderImpl.checkMixinApplication (package:front_end/src/fasta/builder/class_builder.dart:801:51)
#4      SourceLoader.checkMixins (package:front_end/src/fasta/source/source_loader.dart:1165:19)
#5      KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:339:14)
<asynchronous suspension>
#6      withCrashReporting (package:front_end/src/fasta/crash.dart:121:12)
<asynchronous suspension>
#7      Outline.run.<anonymous closure> (file:///usr/local/google/home/jensj/code/dart-sdk/sdk/pkg/front_end/test/fasta/testing/suite.dart:1850:21)
<asynchronous suspension>
#8      Outline.run (file:///usr/local/google/home/jensj/code/dart-sdk/sdk/pkg/front_end/test/fasta/testing/suite.dart:1837:12)
<asynchronous suspension>
#9      ChainContext.run.doStep.<anonymous closure> (package:testing/src/chain.dart:188:22)
<asynchronous suspension>
```

Bug: #46161

Change-Id: I452729ae4b3d0a14528ea2dda51de14185bb965b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/201562
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
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