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CarouselView throws AssertionError when parent size is 0 #160679

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#167271
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CarouselView throws AssertionError when parent size is 0#160679
#167271
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bleroux
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P2Important issues not at the top of the work listc: crashStack traces logged to the consolef: material designflutter/packages/flutter/material repository.found in release: 3.27Found to occur in 3.27found in release: 3.28Found to occur in 3.28frameworkflutter/packages/flutter repository. See also f: labels.has reproducible stepsThe issue has been confirmed reproducible and is ready to work onr: fixedIssue is closed as already fixed in a newer versionteam-designOwned by Design Languages teamtriaged-designTriaged by Design Languages team
@LukasMirbt

Description

@LukasMirbt
LukasMirbt
opened on Dec 20, 2024

Steps to reproduce

  1. Run the code sample
  2. Note that there is an error in the console

Expected results

CarouselView should not throw when parent size is 0.

Actual results

CarouselView throws an AssertionError when parent size is 0.

The documentation for the itemExtent property mentions that the item extent should not exceed the available space that the carousel view occupies to ensure at least one item is fully visible. However, the same error is thrown when both the SizedBox and itemExtent is set to 0. I would also argue that the widget should gracefully handle having 0 size since this can happen indirectly through the parent widget size.

Additionally, an UnsupportedError (Unsupported operation: Infinity or NaN toInt) is thrown when the SizedBox size is set to 100 and itemExtent is set to 0.

Code sample

Code sample 
import 'package:flutter/material.dart';

void main() {
  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: SizedBox(
          width: 0,
          child: CarouselView(
            itemExtent: 100,
            children: [
              Container(
                color: Colors.red,
                width: 100,
                height: 100,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

Logs

Logs 
Launching lib/main.dart on iPhone 15 Pro in debug mode...
Xcode build done.                                           14.2s
Connecting to VM Service at ws://127.0.0.1:64008/DOq4En-aJYE=/ws
Connected to the VM Service.

════════ Exception caught by rendering library ═════════════════════════════════
The following assertion was thrown during performLayout():
'package:flutter/src/rendering/viewport.dart': Failed assertion: line 1515 pos 12: 'correctedOffset.isFinite': is not true.

Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
  https://github.com/flutter/flutter/issues/new?template=2_bug.yml

The relevant error-causing widget was:
    CarouselView CarouselView

When the exception was thrown, this was the stack:
#2      RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1515:12)
#3      RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1467:20)
#4      RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#5      RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#6      RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#7      RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#8      RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#9      RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#10     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#11     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#12     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#13     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#14     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#15     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#16     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#17     _RenderLayoutBuilder.performLayout (package:flutter/src/widgets/layout_builder.dart:393:14)
#18     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#19     RenderConstrainedBox.performLayout (package:flutter/src/rendering/proxy_box.dart:293:14)
#20     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#21     MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:180:12)
#22     _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:1118:7)
#23     MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:249:7)
#24     RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:419:14)
#25     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#26     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#27     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#28     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#29     _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1483:11)
#30     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#31     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#32     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#33     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#34     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#35     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#36     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#37     ChildLayoutHelper.layoutChild (package:flutter/src/rendering/layout_helper.dart:62:11)
#38     RenderStack._computeSize (package:flutter/src/rendering/stack.dart:646:43)
#39     RenderStack.performLayout (package:flutter/src/rendering/stack.dart:673:12)
#40     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#41     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#42     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#43     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#44     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#45     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#46     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#47     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#48     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#49     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#50     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#51     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#52     RenderOffstage.performLayout (package:flutter/src/rendering/proxy_box.dart:3750:13)
#53     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#54     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#55     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#56     _RenderTheaterMixin.layoutChild (package:flutter/src/widgets/overlay.dart:1076:13)
#57     _RenderTheater.performLayout (package:flutter/src/widgets/overlay.dart:1422:9)
#58     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#59     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#60     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#61     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#62     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#63     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#64     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#65     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#66     RenderCustomPaint.performLayout (package:flutter/src/rendering/custom_paint.dart:574:11)
#67     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#68     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#69     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#70     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#71     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#72     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#73     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#74     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#75     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#76     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#77     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#78     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#79     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#80     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:115:18)
#81     RenderObject.layout (package:flutter/src/rendering/object.dart:2715:7)
#82     RenderView.performLayout (package:flutter/src/rendering/view.dart:294:12)
#83     RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:2548:7)
#84     PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:1112:18)
#85     PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:1125:15)
#86     RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:617:23)
#87     WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:1231:13)
#88     RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:483:5)
#89     SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1442:15)
#90     SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1355:9)
#91     SchedulerBinding.scheduleWarmUpFrame.<anonymous closure> (package:flutter/src/scheduler/binding.dart:1064:9)
#92     PlatformDispatcher.scheduleWarmUpFrame.<anonymous closure> (dart:ui/platform_dispatcher.dart:873:16)
#96     _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:194:12)
(elided 5 frames from class _AssertionError, class _Timer, and dart:async-patch)

The following RenderObject was being processed when the exception was fired: RenderViewport#74279 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
    needs compositing
    parentData: <none> (can use size)
    constraints: BoxConstraints(w=0.0, 0.0<=h<=852.0)
    size: Size(0.0, 852.0)
    axisDirection: right
    crossAxisDirection: down
    offset: _CarouselPosition#7e9dc(offset: NaN, range: null..null, viewport: 0.0, ScrollableState, BouncingScrollPhysics -> RangeMaintainingScrollPhysics -> BouncingScrollPhysics -> RangeMaintainingScrollPhysics, IdleScrollActivity#a8b19, ScrollDirection.idle)
    anchor: 0.0
    center child: _RenderSliverFixedExtentCarousel#5c1a8 NEEDS-LAYOUT NEEDS-PAINT
        parentData: paintOffset=Offset(0.0, 0.0)
        constraints: MISSING
        geometry: null
        no children current live
RenderObject: RenderViewport#74279 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
    needs compositing
    parentData: <none> (can use size)
    constraints: BoxConstraints(w=0.0, 0.0<=h<=852.0)
    size: Size(0.0, 852.0)
    axisDirection: right
    crossAxisDirection: down
    offset: _CarouselPosition#7e9dc(offset: NaN, range: null..null, viewport: 0.0, ScrollableState, BouncingScrollPhysics -> RangeMaintainingScrollPhysics -> BouncingScrollPhysics -> RangeMaintainingScrollPhysics, IdleScrollActivity#a8b19, ScrollDirection.idle)
    anchor: 0.0
    center child: _RenderSliverFixedExtentCarousel#5c1a8 NEEDS-LAYOUT NEEDS-PAINT
        parentData: paintOffset=Offset(0.0, 0.0)
        constraints: MISSING
        geometry: null
        no children current live

Flutter Doctor output

Doctor output 
[✓] Flutter (Channel main, 3.28.0-2.0.pre.38555, on macOS 14.4.1 23E224 darwin-arm64, locale en-SE)
    • Flutter version 3.28.0-2.0.pre.38555 on channel main
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 181f4244b4 (3 hours ago), 2024-12-20 18:46:55 +0100
    • Engine revision 181f4244b4
    • Dart version 3.7.0 (build 3.7.0-266.0.dev)
    • DevTools version 2.41.0

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Labels

P2Important issues not at the top of the work listc: crashStack traces logged to the consolef: material designflutter/packages/flutter/material repository.found in release: 3.27Found to occur in 3.27found in release: 3.28Found to occur in 3.28frameworkflutter/packages/flutter repository. See also f: labels.has reproducible stepsThe issue has been confirmed reproducible and is ready to work onr: fixedIssue is closed as already fixed in a newer versionteam-designOwned by Design Languages teamtriaged-designTriaged by Design Languages team

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