Internal Error: The compiler crashed when compiling this element.

[afpatmin]

Operating system: Ubuntu 20.04.2 LTS
Dart SDK: 2.13.0
Source location: org-dartlang-app:///packages/swedskin/presentation/fullpage/fullpage.dart@2295+1:
Stack trace:
The compiler crashed: Unsupported operation: Unhandled node InvalidExpression(<invalid:Invocation of ParallaxOptions>) (InvalidExpression)
#0 ScopeModelBuilder.defaultNode (package:compiler/src/ir/scope_visitor.dart:123:7)
#1 Visitor.defaultTreeNode (package:kernel/visitor.dart:774:39)
#2 TreeVisitor.defaultExpression (package:kernel/visitor.dart:189:43)
#3 TreeVisitor.visitInvalidExpression (package:kernel/visitor.dart:191:55)
#4 InvalidExpression.accept (package:kernel/ast.dart:3615:44)
#5 ScopeModelBuilder.visitNode (package:compiler/src/ir/scope_visitor.dart:126:18)
#6 ScopeModelBuilder._handleExpression (package:compiler/src/ir/scope_visitor.dart:173:33)
#7 ScopeModelBuilder._handleVariableDeclaration (package:compiler/src/ir/scope_visitor.dart:338:26)
#8 ScopeModelBuilder.visitFunctionNode (package:compiler/src/ir/scope_visitor.dart:827:7)
#9 FunctionNode.accept (package:kernel/ast.dart:3392:38)
#10 ScopeModelBuilder.visitNode (package:compiler/src/ir/scope_visitor.dart:126:18)
#11 ScopeModelBuilder.visitProcedure. (package:compiler/src/ir/scope_visitor.dart:665:7)
#12 ScopeModelBuilder.enterNewScope (package:compiler/src/ir/scope_visitor.dart:277:18)
#13 ScopeModelBuilder.visitInvokable (package:compiler/src/ir/scope_visitor.dart:592:5)
#14 ScopeModelBuilder.visitProcedure (package:compiler/src/ir/scope_visitor.dart:664:5)
#15 Procedure.accept (package:kernel/ast.dart:2741:40)
#16 ScopeModelBuilder.computeModel (package:compiler/src/ir/scope_visitor.dart:113:12)
#17 new ScopeModel.from (package:compiler/src/ir/scope.dart:26:20)
#18 KernelModularStrategy.getModularMemberData. (package:compiler/src/kernel/kernel_strategy.dart:435:38)
#19 CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#20 KernelModularStrategy.getModularMemberData (package:compiler/src/kernel/kernel_strategy.dart:434:43)
#21 KernelWorkItem.run. (package:compiler/src/kernel/kernel_strategy.dart:384:28)
#22 CompilerTask.measure (package:compiler/src/common/tasks.dart:66:51)
#23 KernelWorkItem.run (package:compiler/src/kernel/kernel_strategy.dart:369:26)
#24 Compiler.emptyQueue..... (package:compiler/src/compiler.dart:530:70)
#25 CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#26 Compiler.emptyQueue.... (package:compiler/src/compiler.dart:530:32)
#27 CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#28 Compiler.emptyQueue... (package:compiler/src/compiler.dart:528:28)
#29 CompilerDiagnosticReporter.withCurrentElement (package:compiler/src/compiler.dart:819:15)
#30 Compiler.emptyQueue.. (package:compiler/src/compiler.dart:526:18)
#31 ResolutionEnqueuer._forEach (package:compiler/src/enqueue.dart:450:12)
#32 ResolutionEnqueuer.forEach (package:compiler/src/enqueue.dart:466:5)
#33 Compiler.emptyQueue. (package:compiler/src/compiler.dart:522:16)
#34 CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#35 Compiler.emptyQueue (package:compiler/src/compiler.dart:521:14)
#36 Compiler.processQueue. (package:compiler/src/compiler.dart:547:7)
#37 CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#38 Compiler.processQueue (package:compiler/src/compiler.dart:540:14)
#39 Compiler.computeClosedWorld (package:compiler/src/compiler.dart:386:5)
#40 Compiler.compileFromKernel.. (package:compiler/src/compiler.dart:471:17)
#41 CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#42 Compiler.compileFromKernel. (package:compiler/src/compiler.dart:470:44)
#43 CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#44 Compiler.compileFromKernel (package:compiler/src/compiler.dart:469:14)
#45 Compiler.runInternal (package:compiler/src/compiler.dart:304:13)

[a-siva]

@afpatmin do you have more specific instructions on how this crash can be reproduced?

[johnniwinther]

The crash is in dart2js upon seen an InvalidExpression. These should only be created when a compile-time error has been emitted, which in turn should prevent dart2js from trying to analyze the code.

Somehow the CFE seem to have emitted an InvalidExpression without the compile-time error. I'll try to see if I can reproduce the crash.

[afpatmin]

I'm not sure if it's of any help but ParallaxOptions is an interop js object (ie annotated with @JS and @anonymous)

[johnniwinther]

@afpatmin Thanks, it might be of importance.

[johnniwinther]

I have a repro. The problem is trying to mark the external factory constructor of an anonymous js-interop class as const:

@JS()
@anonymous
class ParallaxOptions {
  external const factory ParallaxOptions();
}

The constant evaluator fails to report this as a compile-time error - we cannot evaluate an external constructor at compile-time.