Crash when formatting: [UnterminatedString] String starting with ' must end with '.

[hermantai]

I followed the flutter web startup guide, then got a crash when using webdev:

flutter_web/examples/hello_world$ flutter pub upgrade
$ flutter pub global activate webdev
$ webdev serve --auto restart
Crash when formatting: [UnterminatedString] String starting with ' must end with '.
RangeError (index): Invalid value: Not in range 0..267128, inclusive: 271102
#0 _StringBase.[] (dart:core-patch/string_patch.dart:246:55)
#1 Source.getTextLine (package:kernel/ast.dart:6227:42)
#2 getSourceLine (package:front_end/src/fasta/messages.dart:27:9)
#3 format (package:front_end/src/fasta/command_line_reporting.dart:83:27)
#4 ProcessedOptions.format (package:front_end/src/base/processed_options.dart:205:9)
#5 ProcessedOptions.report (package:front_end/src/base/processed_options.dart:226:29)
#6 CompilerContext.report (package:front_end/src/fasta/compiler_context.dart:68:13)
#7 Loader.addMessage (package:front_end/src/fasta/loader.dart:279:20)
#8 Loader.addProblem (package:front_end/src/fasta/loader.dart:230:12)
#9 LibraryBuilder.addProblem (package:front_end/src/fasta/builder/library_builder.dart:110:19)
#10 KernelLibraryBuilder.addProblem (package:front_end/src/fasta/kernel/kernel_library_builder.dart:256:47)
#11 SourceLoader.tokenize (package:front_end/src/fasta/source/source_loader.dart:230:17)

#12 SourceLoader.buildOutline (package:front_end/src/fasta/source/source_loader.dart:267:26)

#13 Loader.buildOutlines (package:front_end/src/fasta/loader.dart:198:13)

#14 KernelTarget.buildOutlines. (package:front_end/src/fasta/kernel/kernel_target.dart:248:20)

#15 withCrashReporting (package:front_end/src/fasta/crash.dart:122:24)

#16 KernelTarget.buildOutlines (package:front_end/src/fasta/kernel/kernel_target.dart:246:12)

#17 generateKernelInternal. (package:front_end/src/kernel_generator_impl.dart:110:28)

#18 withCrashReporting (package:front_end/src/fasta/crash.dart:122:24)

#19 generateKernelInternal (package:front_end/src/kernel_generator_impl.dart:58:10)

#20 generateKernel. (package:front_end/src/kernel_generator_impl.dart:41:18)

#21 CompilerContext.runWithOptions. (package:front_end/src/fasta/compiler_context.dart:134:20)

#22 CompilerContext.runInContext.. (package:front_end/src/fasta/compiler_context.dart:122:46)
#23 new Future.sync (dart:async/future.dart:224:31)
#24 CompilerContext.runInContext. (package:front_end/src/fasta/compiler_context.dart:122:19)
#25 _rootRun (dart:async/zone.dart:1124:13)
#26 _CustomZone.run (dart:async/zone.dart:1021:19)
#27 _runZoned (dart:async/zone.dart:1516:10)
#28 runZoned (dart:async/zone.dart:1463:12)
#29 CompilerContext.runInContext (package:front_end/src/fasta/compiler_context.dart:121:12)
#30 CompilerContext.runWithOptions (package:front_end/src/fasta/compiler_context.dart:132:10)
#31 generateKernel (package:front_end/src/kernel_generator_impl.dart:40:32)

#32 kernelForComponent (package:front_end/src/api_prototype/kernel_generator.dart:83:17)

#33 SingleShotCompilerWrapper.compileInternal (file:///b/s/w/ir/cache/builder/sdk/pkg/vm/bin/kernel_service.dart:278:11)

#34 Compiler.compile. (file:///b/s/w/ir/cache/builder/sdk/pkg/vm/bin/kernel_service.dart:145:31)

#35 new Future. (dart:async/future.dart:176:37)
#36 _rootRun (dart:async/zone.dart:1120:38)
#37 _CustomZone.run (dart:async/zone.dart:1021:19)
#38 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#39 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:963:23)
#40 _rootRun (dart:async/zone.dart:1124:13)
#41 _CustomZone.run (dart:async/zone.dart:1021:19)
#42 _CustomZone.bindCallback. (dart:async/zone.dart:947:23)
#43 Timer._createTimer. (dart:async-patch/timer_patch.dart:21:15)
#44 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:382:19)
#45 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:416:5)
#46 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)

Crash when compiling file:///Users/htaihm/.pub-cache/global_packages/webdev/bin/webdev.dart.snapshot,
at character offset 268909:
RangeError (index): Invalid value: Not in range 0..267128, inclusive: 271102
#0 _StringBase.[] (dart:core-patch/string_patch.dart:246:55)
#1 Source.getTextLine (package:kernel/ast.dart:6227:42)
#2 getSourceLine (package:front_end/src/fasta/messages.dart:27:9)
#3 format (package:front_end/src/fasta/command_line_reporting.dart:83:27)
#4 ProcessedOptions.format (package:front_end/src/base/processed_options.dart:205:9)
#5 ProcessedOptions.report (package:front_end/src/base/processed_options.dart:226:29)
#6 CompilerContext.report (package:front_end/src/fasta/compiler_context.dart:68:13)
#7 Loader.addMessage (package:front_end/src/fasta/loader.dart:279:20)
#8 Loader.addProblem (package:front_end/src/fasta/loader.dart:230:12)
#9 LibraryBuilder.addProblem (package:front_end/src/fasta/builder/library_builder.dart:110:19)
#10 KernelLibraryBuilder.addProblem (package:front_end/src/fasta/kernel/kernel_library_builder.dart:256:47)
#11 SourceLoader.tokenize (package:front_end/src/fasta/source/source_loader.dart:230:17)

#12 SourceLoader.buildOutline (package:front_end/src/fasta/source/source_loader.dart:267:26)

#13 Loader.buildOutlines (package:front_end/src/fasta/loader.dart:198:13)

#14 KernelTarget.buildOutlines. (package:front_end/src/fasta/kernel/kernel_target.dart:248:20)

#15 withCrashReporting (package:front_end/src/fasta/crash.dart:122:24)

#16 KernelTarget.buildOutlines (package:front_end/src/fasta/kernel/kernel_target.dart:246:12)

#17 generateKernelInternal. (package:front_end/src/kernel_generator_impl.dart:110:28)

#18 withCrashReporting (package:front_end/src/fasta/crash.dart:122:24)

#19 generateKernelInternal (package:front_end/src/kernel_generator_impl.dart:58:10)

#20 generateKernel. (package:front_end/src/kernel_generator_impl.dart:41:18)

#21 CompilerContext.runWithOptions. (package:front_end/src/fasta/compiler_context.dart:134:20)

#22 CompilerContext.runInContext.. (package:front_end/src/fasta/compiler_context.dart:122:46)
#23 new Future.sync (dart:async/future.dart:224:31)
#24 CompilerContext.runInContext. (package:front_end/src/fasta/compiler_context.dart:122:19)
#25 _rootRun (dart:async/zone.dart:1124:13)
#26 _CustomZone.run (dart:async/zone.dart:1021:19)
#27 _runZoned (dart:async/zone.dart:1516:10)
#28 runZoned (dart:async/zone.dart:1463:12)
#29 CompilerContext.runInContext (package:front_end/src/fasta/compiler_context.dart:121:12)
#30 CompilerContext.runWithOptions (package:front_end/src/fasta/compiler_context.dart:132:10)
#31 generateKernel (package:front_end/src/kernel_generator_impl.dart:40:32)

#32 kernelForComponent (package:front_end/src/api_prototype/kernel_generator.dart:83:17)

#33 SingleShotCompilerWrapper.compileInternal (file:///b/s/w/ir/cache/builder/sdk/pkg/vm/bin/kernel_service.dart:278:11)

#34 Compiler.compile. (file:///b/s/w/ir/cache/builder/sdk/pkg/vm/bin/kernel_service.dart:145:31)

#35 new Future. (dart:async/future.dart:176:37)
#36 _rootRun (dart:async/zone.dart:1120:38)
#37 _CustomZone.run (dart:async/zone.dart:1021:19)
#38 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#39 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:963:23)
#40 _rootRun (dart:async/zone.dart:1124:13)
#41 _CustomZone.run (dart:async/zone.dart:1021:19)
#42 _CustomZone.bindCallback. (dart:async/zone.dart:947:23)
#43 Timer._createTimer. (dart:async-patch/timer_patch.dart:21:15)
#44 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:382:19)
#45 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:416:5)
#46 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)

#0 format (package:front_end/src/fasta/command_line_reporting.dart:126:5)
#1 ProcessedOptions.format (package:front_end/src/base/processed_options.dart:205:9)
#2 ProcessedOptions.report (package:front_end/src/base/processed_options.dart:226:29)
#3 CompilerContext.report (package:front_end/src/fasta/compiler_context.dart:68:13)
#4 Loader.addMessage (package:front_end/src/fasta/loader.dart:279:20)
#5 Loader.addProblem (package:front_end/src/fasta/loader.dart:230:12)
#6 LibraryBuilder.addProblem (package:front_end/src/fasta/builder/library_builder.dart:110:19)
#7 KernelLibraryBuilder.addProblem (package:front_end/src/fasta/kernel/kernel_library_builder.dart:256:47)
#8 SourceLoader.tokenize (package:front_end/src/fasta/source/source_loader.dart:230:17)

#9 SourceLoader.buildOutline (package:front_end/src/fasta/source/source_loader.dart:267:26)

#10 Loader.buildOutlines (package:front_end/src/fasta/loader.dart:198:13)

#11 KernelTarget.buildOutlines. (package:front_end/src/fasta/kernel/kernel_target.dart:248:20)

#12 withCrashReporting (package:front_end/src/fasta/crash.dart:122:24)

#13 KernelTarget.buildOutlines (package:front_end/src/fasta/kernel/kernel_target.dart:246:12)

#14 generateKernelInternal. (package:front_end/src/kernel_generator_impl.dart:110:28)

#15 withCrashReporting (package:front_end/src/fasta/crash.dart:122:24)

#16 generateKernelInternal (package:front_end/src/kernel_generator_impl.dart:58:10)

#17 generateKernel. (package:front_end/src/kernel_generator_impl.dart:41:18)

#18 CompilerContext.runWithOptions. (package:front_end/src/fasta/compiler_context.dart:134:20)

#19 CompilerContext.runInContext.. (package:front_end/src/fasta/compiler_context.dart:122:46)
#20 new Future.sync (dart:async/future.dart:224:31)
#21 CompilerContext.runInContext. (package:front_end/src/fasta/compiler_context.dart:122:19)
#22 _rootRun (dart:async/zone.dart:1124:13)
#23 _CustomZone.run (dart:async/zone.dart:1021:19)
#24 _runZoned (dart:async/zone.dart:1516:10)
#25 runZoned (dart:async/zone.dart:1463:12)
#26 CompilerContext.runInContext (package:front_end/src/fasta/compiler_context.dart:121:12)
#27 CompilerContext.runWithOptions (package:front_end/src/fasta/compiler_context.dart:132:10)
#28 generateKernel (package:front_end/src/kernel_generator_impl.dart:40:32)

#29 kernelForComponent (package:front_end/src/api_prototype/kernel_generator.dart:83:17)

#30 SingleShotCompilerWrapper.compileInternal (file:///b/s/w/ir/cache/builder/sdk/pkg/vm/bin/kernel_service.dart:278:11)

#31 Compiler.compile. (file:///b/s/w/ir/cache/builder/sdk/pkg/vm/bin/kernel_service.dart:145:31)

#32 new Future. (dart:async/future.dart:176:37)
#33 _rootRun (dart:async/zone.dart:1120:38)
#34 _CustomZone.run (dart:async/zone.dart:1021:19)
#35 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#36 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:963:23)
#37 _rootRun (dart:async/zone.dart:1124:13)
#38 _CustomZone.run (dart:async/zone.dart:1021:19)
#39 _CustomZone.bindCallback. (dart:async/zone.dart:947:23)
#40 Timer._createTimer. (dart:async-patch/timer_patch.dart:21:15)
#41 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:382:19)
#42 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:416:5)
#43 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)

$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, v1.7.8+hotfix.3, on Mac OS X 10.14.5 18F132, locale en-US)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✗] Xcode - develop for iOS and macOS
✗ Xcode installation is incomplete; a full installation is necessary for iOS development.
Download at: https://developer.apple.com/xcode/download/
Or install Xcode via the App Store.
Once installed, run:
sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
✗ CocoaPods not installed.
CocoaPods is used to retrieve the iOS and macOS platform side's plugin code that responds to your plugin usage on the Dart side.
Without CocoaPods, plugins will not work on iOS or macOS.
For more info, see https://flutter.dev/platform-plugins
To install:
brew install cocoapods
pod setup
[✗] iOS tools - develop for iOS devices
✗ libimobiledevice and ideviceinstaller are not installed. To install with Brew, run:
brew update
brew install --HEAD usbmuxd
brew link usbmuxd
brew install --HEAD libimobiledevice
brew install ideviceinstaller
✗ ios-deploy not installed. To install:
brew install ios-deploy
[✓] Android Studio (version 3.4)
[✓] IntelliJ IDEA Community Edition (version 2019.1.3)
[✓] Connected device (1 available)

! Doctor found issues in 2 categories.

$ dart --version
Dart VM version: 2.5.0-dev.1.0 (Tue Jul 9 15:27:01 2019 +0200) on "macos_x64"

This happens on macOS Mojave: 10.14.5

[grouma]

Sorry for the delayed reply here. This should no longer be an issue. I am unable to reproduce this with webdev version 2.5.0.