dart2js crash on missing function in list literal of function literals

[whesse]

This crash occurred in dart2js from release x64 linux build of SDK from commit 9b586a3

When compiling the file reduced_test.dart containing only the text

final foo = [ () => const [], () => bar() ];

with the command

out/ReleaseX64/dart-sdk/bin/dart2js --sound-null-safety --out=out.js reduced_test.dart

I get a compiler crash. The crash also occurs without the --sound-null-safety flag, and also if the expression
is put within main() { }.

The entire crash message is

/src/dart/sdk$ out/ReleaseX64/dart-sdk/bin/dart2js reduced_test.dart 
reduced_test.dart:1:37:
Error: Method not found: 'bar'.
final foo = [ () => const [], () => bar() ];
                                    ^^^
reduced_test.dart:
Internal Error: The compiler crashed when compiling this element.

The compiler is broken.

When compiling the above element, the compiler crashed. It is not
possible to tell if this is caused by a problem in your program or
not. Regardless, the compiler should not crash.

The Dart team would greatly appreciate if you would take a moment to
report this problem at http://dartbug.com/new.

Please include the following information:

* the name and version of your operating system,

* the Dart SDK build number (2.14.0-edge.9b586a3da6329669bf27abc05e3000cc53e87abd), and

* the entire message you see here (including the full stack trace
  below as well as the source location above).

The compiler crashed: Crash when compiling null,
at character offset null:
type 'InvalidType' is not a subtype of type 'InterfaceType' in type cast
#0      StandardBounds.getNullabilityAwareStandardUpperBoundInternal (package:kernel/src/standard_bounds.dart:821:13)
#1      TypeSchemaStandardBounds.getNullabilityAwareStandardUpperBoundInternal (package:front_end/src/fasta/type_inference/standard_bounds.dart:57:18)
#2      StandardBounds._getNullabilityAwareStandardUpperBound (package:kernel/src/standard_bounds.dart:626:12)
#3      StandardBounds._getNullabilityAwareFunctionStandardUpperBound (package:kernel/src/standard_bounds.dart:1198:27)
#4      StandardBounds.getNullabilityAwareStandardUpperBoundInternal (package:kernel/src/standard_bounds.dart:743:16)
#5      TypeSchemaStandardBounds.getNullabilityAwareStandardUpperBoundInternal (package:front_end/src/fasta/type_inference/standard_bounds.dart:57:18)
#6      StandardBounds._getNullabilityAwareStandardUpperBound (package:kernel/src/standard_bounds.dart:626:12)
#7      StandardBounds.getStandardUpperBound (package:kernel/src/standard_bounds.dart:614:14)
#8      TypeSchemaEnvironment.addLowerBound (package:front_end/src/fasta/type_inference/type_schema_environment.dart:114:9)
#9      TypeSchemaConstraintGatherer.addLowerBound (package:front_end/src/fasta/type_inference/type_constraint_gatherer.dart:1055:17)
#10     TypeConstraintGatherer.computeConstraints (package:front_end/src/fasta/type_inference/type_constraint_gatherer.dart:70:9)
#11     TypeSchemaEnvironment.inferGenericFunctionOrType (package:front_end/src/fasta/type_inference/type_schema_environment.dart:288:39)
#12     InferenceVisitor.visitListLiteral (package:front_end/src/fasta/kernel/inference_visitor.dart:2001:38)
#13     ListLiteral.accept1 (package:kernel/ast.dart:7578:9)
#14     TypeInferrerImpl._inferExpression (package:front_end/src/fasta/type_inference/type_inferrer.dart:1964:27)
#15     TypeInferrerImpl.inferExpression (package:front_end/src/fasta/type_inference/type_inferrer.dart:1998:40)
#16     _ImplicitFieldTypeRoot.computeType (package:front_end/src/fasta/kernel/implicit_field_type.dart:154:55)
#17     SourceFieldBuilder.inferType (package:front_end/src/fasta/builder/field_builder.dart:476:47)
#18     SourceLoader.performTopLevelInference (package:front_end/src/fasta/source/source_loader.dart:1274:35)
#19     KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:335:14)
<asynchronous suspension>
#20     withCrashReporting (package:front_end/src/fasta/crash.dart:121:12)
<asynchronous suspension>
#21     generateKernelInternal.<anonymous closure> (package:front_end/src/kernel_generator_impl.dart:101:10)
<asynchronous suspension>
#22     withCrashReporting (package:front_end/src/fasta/crash.dart:121:12)
<asynchronous suspension>
#23     compile.<anonymous closure> (package:front_end/src/api_unstable/dart2js.dart:201:37)
<asynchronous suspension>
#24     compile (package:front_end/src/api_unstable/dart2js.dart:199:36)
<asynchronous suspension>
#25     KernelLoaderTask.load.<anonymous closure> (package:compiler/src/kernel/loader.dart:179:21)
<asynchronous suspension>
#26     Compiler.runInternal (package:compiler/src/compiler.dart:282:29)
<asynchronous suspension>

[sigmundch]

FYI @stefantsov @johnniwinther, seems like a bug in the CFE's type inference.