Example issue
hello, I tried your example but I have this error message :
compiler message: Unhandled exception:
Crash when compiling file:///C:/Users/utilisateur/Desktop/maptestflutter_app/lib/main.dart,
at character offset 1823:
lib/main.dart: Internal problem: Unhandled this in defaultTreeNode.
#0 internalProblem (package:front_end/src/fasta/problems.dart:30)
#1 unhandled (package:front_end/src/fasta/problems.dart:43)
#2 ConstnessEvaluator.defaultTreeNode (package:front_end/src/fasta/kernel/constness_evaluator.dart:112)
#3 TreeVisitor.defaultExpression (package:kernel/visitor.dart:140)
#4 TreeVisitor.visitThisExpression (package:kernel/visitor.dart:171)
#5 ThisExpression.accept (package:kernel/ast.dart:3341)
#6 ConstnessEvaluator.visitPropertyGet (package:front_end/src/fasta/kernel/constness_evaluator.dart:287)
#7 PropertyGet.accept (package:kernel/ast.dart:2242)
#8 ConstnessEvaluator.visitConstructorInvocation (package:front_end/src/fasta/kernel/constness_evaluator.dart:175)
#9 ConstructorInvocation.accept (package:kernel/ast.dart:2983)
#10 ConstnessEvaluator.evaluate (package:front_end/src/fasta/kernel/constness_evaluator.dart:99)
#11 evaluateConstness (package:front_end/src/fasta/kernel/constness_evaluator.dart:466)
#12 BodyBuilder.inferConstness (package:front_end/src/fasta/kernel/body_builder.dart:710)
#13 BodyBuilder.finishFunction (package:front_end/src/fasta/kernel/body_builder.dart:697)
#14 DietListener.listenerFinishFunction (package:front_end/src/fasta/source/diet_listener.dart:684)
#15 DietListener.parseFunctionBody (package:front_end/src/fasta/source/diet_listener.dart:718)
#16 DietListener.buildFunctionBody (package:front_end/src/fasta/source/diet_listener.dart:565)
#17 DietListener.endMethod (package:front_end/src/fasta/source/diet_listener.dart:530)
#18 Parser.parseMethod (package:front_end/src/fasta/parser/parser.dart:3796)
#19 Parser.parseClassMemberImpl (package:front_end/src/fasta/parser/parser.dart:3670)
#20 Parser.parseClassBody (package:front_end/src/fasta/parser/parser.dart:3467)
#21 Parser.parseClass (package:front_end/src/fasta/parser/parser.dart:1699)
#22 Parser.parseClassOrNamedMixinApplication (package:front_end/src/fasta/parser/parser.dart:1659)
#23 Parser.parseTopLevelKeywordDeclaration (package:front_end/src/fasta/parser/parser.dart:535)
#24 Parser.parseTopLevelDeclarationImpl (package:front_end/src/fasta/parser/parser.dart:451)
#25 Parser.parseUnit (package:front_end/src/fasta/parser/parser.dart:335)
#26 SourceLoader.buildBody (package:front_end/src/fasta/source/source_loader.dart:198)
#0 internalProblem (package:front_end/src/fasta/problems.dart:30)
#1 unhandled (package:front_end/src/fasta/problems.dart:43)
#2 ConstnessEvaluator.defaultTreeNode (package:front_end/src/fasta/kernel/constness_evaluator.dart:112)
#3 TreeVisitor.defaultExpression (package:kernel/visitor.dart:140)
#4 TreeVisitor.visitThisExpression (package:kernel/visitor.dart:171)
#5 ThisExpression.accept (package:kernel/ast.dart:3341)
#6 ConstnessEvaluator.visitPropertyGet (package:front_end/src/fasta/kernel/constness_evaluator.dart:287)
#7 PropertyGet.accept (package:kernel/ast.dart:2242)
#8 ConstnessEvaluator.visitConstructorInvocation (package:front_end/src/fasta/kernel/constness_evaluator.dart:175)
#9 ConstructorInvocation.accept (package:kernel/ast.dart:2983)
#10 ConstnessEvaluator.evaluate (package:front_end/src/fasta/kernel/constness_evaluator.dart:99)
#11 evaluateConstness (package:front_end/src/fasta/kernel/constness_evaluator.dart:466)
#12 BodyBuilder.inferConstness (package:front_end/src/fasta/kernel/body_builder.dart:710)
#13 BodyBuilder.finishFunction (package:front_end/src/fasta/kernel/body_builder.dart:697)
#14 DietListener.listenerFinishFunction (package:front_end/src/fasta/source/diet_listener.dart:684)
#15 DietListener.parseFunctionBody (package:front_end/src/fasta/source/diet_listener.dart:718)
#16 DietListener.buildFunctionBody (package:front_end/src/fasta/source/diet_listener.dart:565)
#17 DietListener.endMethod (package:front_end/src/fasta/source/diet_listener.dart:530)
#18 Parser.parseMethod (package:front_end/src/fasta/parser/parser.dart:3796)
#19 Parser.parseClassMemberImpl (package:front_end/src/fasta/parser/parser.dart:3670)
#20 Parser.parseClassBody (package:front_end/src/fasta/parser/parser.dart:3467)
#21 Parser.parseClass (package:front_end/src/fasta/parser/parser.dart:1699)
#22 Parser.parseClassOrNamedMixinApplication (package:front_end/src/fasta/parser/parser.dart:1659)
#23 Parser.parseTopLevelKeywordDeclaration (package:front_end/src/fasta/parser/parser.dart:535)
#24 Parser.parseTopLevelDeclarationImpl (package:front_end/src/fasta/parser/parser.dart:451)
#25 Parser.parseUnit (package:front_end/src/fasta/parser/parser.dart:335)
#26 SourceLoader.buildBody (package:front_end/src/fasta/source/source_loader.dart:198)
Compiler terminated unexpectedly on C:\Users\utilisateur\Desktop\maptestflutter_app\lib\main.dart
FAILURE: Build failed with an exception.
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Where: Script 'C:\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 441
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What went wrong: Execution failed for task ':app:flutterDependenciesDebug'.
Process 'command 'C:\flutter\bin\flutter.bat'' finished with non-zero exit value 1
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Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
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Get more help at https://help.gradle.org
BUILD FAILED in 6s Finished with error: Gradle build failed: 1
I don't understand what is the problem.
Did you understand the issue yet, i am having the same problem
I/flutter (16341): Failed