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Uint8List reports type exception while using + operator in null safety mode #45140

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ctrysbita opened this issue Feb 27, 2021 · 0 comments
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Uint8List reports type exception while using + operator in null safety mode #45140

ctrysbita opened this issue Feb 27, 2021 · 0 comments
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@lrhn
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area-core-library SDK core library issues (core, async, ...); use area-vm or area-web for platform specific libraries. area-vm Use area-vm for VM related issues, including code coverage, and the AOT and JIT backends. library-typed-data type-bug Incorrect behavior (everything from a crash to more subtle misbehavior)

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@ctrysbita
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ctrysbita commented Feb 27, 2021 •
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Dart code:

print(Uint8List.fromList([1]) + Uint8List.fromList([2]));

Reports exception:

Unhandled exception:
type 'Null' is not a subtype of type 'int' in type cast
#0      List.length= (dart:core-patch/growable_array.dart:222:12)
#1      _IntListMixin.+ (dart:typed_data-patch/typed_data_patch.dart:156:9)

While null safety is on (SDK >= 2.12.0-0).

Expected output:

[1, 2]

Dart SDK Version (dart --version)

Dart SDK version: 2.13.0-30.0.dev (dev) (Fri Feb 12 04:33:47 2021 -0800) on "windows_x64"
@lrhn lrhn added area-core-library SDK core library issues (core, async, ...); use area-vm or area-web for platform specific libraries. area-vm Use area-vm for VM related issues, including code coverage, and the AOT and JIT backends. library-typed-data type-bug Incorrect behavior (everything from a crash to more subtle misbehavior) labels Mar 1, 2021
@lrhn lrhn self-assigned this Mar 1, 2021
@lrhn lrhn mentioned this issue Mar 2, 2021
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dart-bot pushed a commit that referenced this issue Mar 10, 2021
@lrhn @athomas
Fix null-safety issue in VM's typed-data + operators.
be614fb 
Fixes #45140.

Bug: http://dartbug.com/45140
Change-Id: I95f45c64d86428ddb67d176cdd2d50cfdbadfe8b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/188283
Reviewed-by: Martin Kustermann <[email protected]>
Commit-Queue: Lasse R.H. Nielsen <[email protected]>
@RootSoft RootSoft mentioned this issue Jun 20, 2021
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area-core-library SDK core library issues (core, async, ...); use area-vm or area-web for platform specific libraries. area-vm Use area-vm for VM related issues, including code coverage, and the AOT and JIT backends. library-typed-data type-bug Incorrect behavior (everything from a crash to more subtle misbehavior)
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