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[engine] Support UTF-8 paths in Windows filesystem and path APIs - #191360

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[engine] Support UTF-8 paths in Windows filesystem and path APIs#191360
auto-submit[bot] merged 10 commits into
flutter:masterfrom
bkonyi:investigation/issue-64758

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@bkonyi bkonyi commented Aug 19, 2026

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This change fixes hot reload failures and path resolution issues on Windows when project or temporary directory paths contain UTF-8 characters with non-ASCII code points (e.g. Japanese, Chinese, accented characters).

Root Cause

  1. During hot reload, the VM reads .dill files using tonic::filesystem::ReadFileToBytes in file.cc. On Windows, standard C library open() was used, which expects ANSI-encoded paths.
  2. If the path contained UTF-8 characters not representable in the active ANSI code page, open() failed.
  3. This failure triggered a fallback to compile from source via CompileToKernel, which attempted to start the Kernel Isolate. Because the Kernel Isolate is disabled in Flutter (start_kernel_isolate = false), it failed with the misleading error: Error while starting Kernel isolate task.
  4. Related path APIs in tonic/filesystem (AbsolutePath, GetAbsoluteFilePath) and fml/paths (AbsolutePath) similarly used ANSI Win32 APIs (_fullpath, CreateFileA, GetFinalPathNameByHandleA).

Solution

  1. Added shared UTF-8 / UTF-16 conversion utilities (Utf8ToWide, WideToUtf8) in tonic/filesystem/filesystem/windows_utils.h.
  2. Updated tonic::filesystem::ReadFileToString and ReadFileToBytes to use _wopen with wide strings on Windows.
  3. Updated tonic::filesystem::AbsolutePath and GetAbsoluteFilePath to use _wfullpath, CreateFileW, and GetFinalPathNameByHandleW.
  4. Updated fml::paths::AbsolutePath to use fml::Utf8ToWideString, _wfullpath, and fml::WideStringToUtf8.
  5. Added an integration test packages/flutter_tools/test/integration.shard/hot_reload_non_ascii_path_test.dart verifying that hot reload succeeds when the project is in a directory containing non-ASCII characters (試験).

Fixes #64758

Pre-launch Checklist

bkonyi added 4 commits August 18, 2026 22:33
@bkonyi
[engine] Fix hot reload failure on Windows with UTF-8 paths
b2bee71 
On Windows, `tonic::filesystem::ReadFileToBytes` and `ReadFileToString` used the standard `open()` function, which expects paths in the active ANSI code page. If the project path (or temp path) contained UTF-8 characters not representable in the active code page, the file read failed.

This failure triggered a fallback to compile from source via the Kernel Isolate, which is not started in Flutter, resulting in a misleading "Error while starting Kernel isolate task" error.

This change fixes the issue by:
1. Implementing a `Utf8ToWide` helper on Windows using `MultiByteToWideChar`.
2. Using `_wopen` with wide-character paths on Windows in `ReadFileToBytes` and `ReadFileToString`.

Also added an integration test `hot_reload_non_ascii_path_test.dart` to verify hot reload works when the project is in a directory with non-ASCII characters.

Fixes flutter#64758
@bkonyi
[engine] Support UTF-8 paths in Windows path and filesystem APIs
e7bb208 
Updates AbsolutePath and GetAbsoluteFilePath in tonic/filesystem and fml/paths to convert UTF-8 strings to wide characters and call wide Win32 APIs (_wfullpath, CreateFileW, GetFinalPathNameByHandleW), avoiding ANSI encoding failures on Windows for paths with non-ASCII characters.
@bkonyi
[tonic] Extract shared Utf8ToWide and WideToUtf8 helpers into windows…
4ff38ad 
…_utils.h

Consolidates duplicate Utf8ToWide and WideToUtf8 definitions from file.cc and path_win.cc into a shared windows_utils.h header in tonic/filesystem.
@bkonyi
[tonic] Address code review comments for Windows UTF-8 path helpers
00c4931 
1. Move windows_utils.h include inside OS_WIN block in file.cc so non-Windows builds pass gn check.
2. Accept std::string_view and std::wstring_view in Utf8ToWide and WideToUtf8 to avoid temporary string allocations.
3. Handle UNC path prefixes (\\?\UNC\) properly in GetAbsoluteFilePath.
@github-actions github-actions Bot added tool Affects the "flutter" command-line tool. See also t: labels. engine flutter/engine related. See also e: labels. labels Aug 19, 2026
@bkonyi bkonyi added the CICD Run CI/CD label Aug 19, 2026
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bkonyi marked this pull request as ready for review August 19, 2026 17:08
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bkonyi requested a review from gmackall August 19, 2026 17:08
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Code Review

This pull request updates the Windows implementation of AbsolutePath to use wide-string APIs (_wfullpath) to support non-ASCII paths, and adds an integration test verifying hot reload on paths containing Japanese characters. Feedback suggests avoiding the fixed-size MAX_PATH buffer in AbsolutePath by allowing _wfullpath to dynamically allocate the buffer, which prevents potential failures on long paths.

Comment thread engine/src/flutter/fml/platform/win/paths_win.cc Outdated
@bkonyi
bkonyi requested review from gaaclarke and removed request for gmackall August 19, 2026 17:08
bkonyi added 2 commits August 19, 2026 17:11
@bkonyi
[engine] Use dynamically allocated buffers for _wfullpath and GetFina…
6427931 
…lPathNameByHandleW

Avoid MAX_PATH buffer limit issues by passing nullptr to _wfullpath to allocate the required buffer dynamically, and reallocate GetFinalPathNameByHandleW buffer if return size exceeds initial buffer.
@bkonyi
Merge branch 'master' into investigation/issue-64758
27cf1c9
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The fixes are probably good but continuing to maintain windows specific filesystem code is no longer necessary after c++17. Can we please leverage std::filesystem since they are simpler and cleaner?

Comment thread engine/src/flutter/fml/platform/win/paths_win.cc Outdated
Comment thread engine/src/flutter/fml/platform/win/paths_win.cc Outdated
Comment thread engine/src/flutter/third_party/tonic/filesystem/filesystem/path_win.cc Outdated
Comment thread engine/src/flutter/third_party/tonic/filesystem/filesystem/path_win.cc Outdated
Comment thread engine/src/flutter/third_party/tonic/filesystem/filesystem/path_win.cc Outdated
Comment thread engine/src/flutter/third_party/tonic/filesystem/filesystem/path_win.cc Outdated
Comment thread engine/src/flutter/third_party/tonic/filesystem/filesystem/windows_utils.h Outdated
Comment thread engine/src/flutter/third_party/tonic/filesystem/filesystem/windows_utils.h Outdated
bkonyi added 2 commits August 20, 2026 01:54
@bkonyi
[tonic] Use C++20 std::filesystem::path for Utf8ToWide and WideToUtf8…
eecbb29 
… conversions

Replaces Win32 MultiByteToWideChar and WideCharToMultiByte calls with standard C++20 std::filesystem::path conversions.
@bkonyi
[engine] Use std::filesystem for AbsolutePath and starts_with for pre…
9b90cc2 
…fix checks

1. Update AbsolutePath in fml and tonic to use std::filesystem::absolute and lexically_normal.
2. Use starts_with for UNC and long path prefix checks in tonic GetAbsoluteFilePath.
3. Add explanatory documentation for UNC prefix handling.
@bkonyi
bkonyi requested a review from gaaclarke August 20, 2026 02:02
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Looking good, just a few notes

Comment thread engine/src/flutter/fml/platform/win/paths_win.cc
Comment thread engine/src/flutter/fml/platform/win/paths_win.cc Outdated
Comment thread engine/src/flutter/third_party/tonic/filesystem/filesystem/path_win.cc
Comment thread engine/src/flutter/third_party/tonic/filesystem/filesystem/windows_utils.h Outdated
@bkonyi
[engine] Add logging on AbsolutePath failure and rename path conversi…
5efb658 
…on helpers

1. Add FML_DLOG/tonic::Log on AbsolutePath failure in fml and tonic.
2. Remove unused helper functions in fml paths_win.cc.
3. Rename Utf8ToWide/WideToUtf8 to Utf8PathToWide/WidePathToUtf8 to clarify path conversion semantics.
gaaclarke
gaaclarke previously approved these changes Aug 20, 2026
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lgtm! thanks

@bkonyi bkonyi added the autosubmit Merge PR when tree becomes green via auto submit App label Aug 20, 2026
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autosubmit label was removed for flutter/flutter/191360, because - The status or check suite Mac_arm64_verify_binaries has failed. Please fix the issues identified (or deflake) before re-applying this label.

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autosubmit label was removed for flutter/flutter/191360, because - The status or check suite Mac_arm64_verify_binaries has failed. Please fix the issues identified (or deflake) before re-applying this label.

@bkonyi bkonyi added the autosubmit Merge PR when tree becomes green via auto submit App label Aug 20, 2026
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autosubmit label was removed for flutter/flutter/191360, because - The status or check suite Dashboard Checks has failed. Please fix the issues identified (or deflake) before re-applying this label.

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autosubmit label was removed for flutter/flutter/191360, because - The status or check suite Dashboard Checks has failed. Please fix the issues identified (or deflake) before re-applying this label.

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Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions) (#12619)
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Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions)

flutter/flutter@9a82789...15d8908

2026-08-25 engine-flutter-autoroll@skia.org Roll Packages from df2ba94 to 740f093 (17 revisions) (flutter/flutter#191734)
2026-08-25 dacoharkes@google.com [record_use] Remove const_finder (flutter/flutter#191702)
2026-08-25 48625061+muradhossin@users.noreply.github.com Warn when SwiftPM is disabled (flutter/flutter#188695)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from b1a31575c373 to 480540178356 (1 revision) (flutter/flutter#191723)
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2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from bfa276ed9ac5 to b1a31575c373 (1 revision) (flutter/flutter#191717)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 0818e6dc28cc to 8996935d3d0a (2 revisions) (flutter/flutter#191706)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 31799e707cd4 to bfa276ed9ac5 (1 revision) (flutter/flutter#191701)
2026-08-25 chris@bracken.jp iOS: Add null check for touch rate correction task runner (flutter/flutter#191641)
2026-08-25 chris@bracken.jp iOS: Add test for engineAllowHeadlessExecution (flutter/flutter#191635)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from cfae2af1bfeb to 31799e707cd4 (4 revisions) (flutter/flutter#191649)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 2b75c83ddd77 to 0818e6dc28cc (1 revision) (flutter/flutter#191643)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 4a2fddefd3d8 to cfae2af1bfeb (1 revision) (flutter/flutter#191642)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 256c15026b91 to 4a2fddefd3d8 (6 revisions) (flutter/flutter#191633)
2026-08-25 97480502+b-luk@users.noreply.github.com Remove octant_offset_c uniform from ubersdf, reorder/document ubersdf uniforms (flutter/flutter#191597)
2026-08-25 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 8Xu4ujBJniC0nQGx3... to MstTWE1RDOT-RnrtH... (flutter/flutter#191621)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 78bbc37b6ff6 to 2b75c83ddd77 (3 revisions) (flutter/flutter#191614)
2026-08-24 bkonyi@google.com [flutter_tools] Fix $git typo in shared.bat to restore cache invalidation on Windows (flutter/flutter#191217)
2026-08-24 87962825+kyungilcho@users.noreply.github.com Skip removed observers during app exit requests (flutter/flutter#190343)
2026-08-24 bkonyi@google.com [engine] Support UTF-8 paths in Windows filesystem and path APIs (flutter/flutter#191360)
2026-08-24 okorohelijah@google.com Migrate ios driver tests batch 3 to simulators (flutter/flutter#191333)
2026-08-24 jmccandless@google.com Migrate texture example to material_ui (flutter/flutter#190673)
2026-08-24 116356835+AbdeMohlbi@users.noreply.github.com Remove outdated test todo about `dither` property of `Paint` (flutter/flutter#190936)
2026-08-24 47866232+chunhtai@users.noreply.github.com Add agent rule to prevent using material and cupertino in widget tests (flutter/flutter#191588)
2026-08-24 bkonyi@google.com [flutter_tools] Prevent crash when stdout is broken and print fails (flutter/flutter#191356)
2026-08-24 robert.ancell@canonical.com Add FlViewRendererSubsurface (flutter/flutter#191389)
2026-08-24 43054281+camsim99@users.noreply.github.com [Android] Inject `route` into manifest when specified on the command line in release mode (flutter/flutter#191328)
2026-08-24 269567208+reidbaker-agent@users.noreply.github.com [AGP 9.1.0 Migration #3] Add buildModeFor overloads and wire Flutter dependencies through the new DSL (flutter/flutter#191218)
2026-08-24 engine-flutter-autoroll@skia.org Roll Skia from 698c60bf58f1 to 256c15026b91 (1 revision) (flutter/flutter#191586)
2026-08-24 15619084+vashworth@users.noreply.github.com On iOS 27+ devices, manually process lldb stops (flutter/flutter#191434)
2026-08-24 bkonyi@google.com [flutter_tools] Handle missing Xcode gracefully in getInfo and buildMacOS (flutter/flutter#191180)
2026-08-24 bkonyi@google.com [flutter_tools] Handle null version gracefully in CachedArtifact and MaterialFonts (flutter/flutter#191494)
2026-08-24 bkonyi@google.com [flutter_tools] Do not treat 'daemon' argument as daemon command in logger initialization (flutter/flutter#191442)
2026-08-24 bkonyi@google.com [flutter_tools] Resolve workspace root when running widget preview from member package (flutter/flutter#190952)
2026-08-24 dacoharkes@google.com [native_assets] Roll native packages (flutter/flutter#191253)
2026-08-24 bkonyi@google.com [flutter_tools] Add --force flag to flutter channel (flutter/flutter#191579)
2026-08-24 engine-flutter-autoroll@skia.org Roll Skia from 57968d087d18 to 698c60bf58f1 (1 revision) (flutter/flutter#191577)

If this roll has caused a breakage, revert this CL and stop the roller
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Please CC bmparr@google.com,stuartmorgan@google.com on the revert to ensure that a human
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To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose

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danielleon-cmd pushed a commit to victogomez-cs/packages-fork that referenced this pull request Aug 27, 2026
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Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions) (flutte…
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Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions)

flutter/flutter@9a82789...15d8908

2026-08-25 engine-flutter-autoroll@skia.org Roll Packages from df2ba94 to 740f093 (17 revisions) (flutter/flutter#191734)
2026-08-25 dacoharkes@google.com [record_use] Remove const_finder (flutter/flutter#191702)
2026-08-25 48625061+muradhossin@users.noreply.github.com Warn when SwiftPM is disabled (flutter/flutter#188695)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from b1a31575c373 to 480540178356 (1 revision) (flutter/flutter#191723)
2026-08-25 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#191726)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from bfa276ed9ac5 to b1a31575c373 (1 revision) (flutter/flutter#191717)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 0818e6dc28cc to 8996935d3d0a (2 revisions) (flutter/flutter#191706)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 31799e707cd4 to bfa276ed9ac5 (1 revision) (flutter/flutter#191701)
2026-08-25 chris@bracken.jp iOS: Add null check for touch rate correction task runner (flutter/flutter#191641)
2026-08-25 chris@bracken.jp iOS: Add test for engineAllowHeadlessExecution (flutter/flutter#191635)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from cfae2af1bfeb to 31799e707cd4 (4 revisions) (flutter/flutter#191649)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 2b75c83ddd77 to 0818e6dc28cc (1 revision) (flutter/flutter#191643)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 4a2fddefd3d8 to cfae2af1bfeb (1 revision) (flutter/flutter#191642)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 256c15026b91 to 4a2fddefd3d8 (6 revisions) (flutter/flutter#191633)
2026-08-25 97480502+b-luk@users.noreply.github.com Remove octant_offset_c uniform from ubersdf, reorder/document ubersdf uniforms (flutter/flutter#191597)
2026-08-25 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 8Xu4ujBJniC0nQGx3... to MstTWE1RDOT-RnrtH... (flutter/flutter#191621)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 78bbc37b6ff6 to 2b75c83ddd77 (3 revisions) (flutter/flutter#191614)
2026-08-24 bkonyi@google.com [flutter_tools] Fix $git typo in shared.bat to restore cache invalidation on Windows (flutter/flutter#191217)
2026-08-24 87962825+kyungilcho@users.noreply.github.com Skip removed observers during app exit requests (flutter/flutter#190343)
2026-08-24 bkonyi@google.com [engine] Support UTF-8 paths in Windows filesystem and path APIs (flutter/flutter#191360)
2026-08-24 okorohelijah@google.com Migrate ios driver tests batch 3 to simulators (flutter/flutter#191333)
2026-08-24 jmccandless@google.com Migrate texture example to material_ui (flutter/flutter#190673)
2026-08-24 116356835+AbdeMohlbi@users.noreply.github.com Remove outdated test todo about `dither` property of `Paint` (flutter/flutter#190936)
2026-08-24 47866232+chunhtai@users.noreply.github.com Add agent rule to prevent using material and cupertino in widget tests (flutter/flutter#191588)
2026-08-24 bkonyi@google.com [flutter_tools] Prevent crash when stdout is broken and print fails (flutter/flutter#191356)
2026-08-24 robert.ancell@canonical.com Add FlViewRendererSubsurface (flutter/flutter#191389)
2026-08-24 43054281+camsim99@users.noreply.github.com [Android] Inject `route` into manifest when specified on the command line in release mode (flutter/flutter#191328)
2026-08-24 269567208+reidbaker-agent@users.noreply.github.com [AGP 9.1.0 Migration #3] Add buildModeFor overloads and wire Flutter dependencies through the new DSL (flutter/flutter#191218)
2026-08-24 engine-flutter-autoroll@skia.org Roll Skia from 698c60bf58f1 to 256c15026b91 (1 revision) (flutter/flutter#191586)
2026-08-24 15619084+vashworth@users.noreply.github.com On iOS 27+ devices, manually process lldb stops (flutter/flutter#191434)
2026-08-24 bkonyi@google.com [flutter_tools] Handle missing Xcode gracefully in getInfo and buildMacOS (flutter/flutter#191180)
2026-08-24 bkonyi@google.com [flutter_tools] Handle null version gracefully in CachedArtifact and MaterialFonts (flutter/flutter#191494)
2026-08-24 bkonyi@google.com [flutter_tools] Do not treat 'daemon' argument as daemon command in logger initialization (flutter/flutter#191442)
2026-08-24 bkonyi@google.com [flutter_tools] Resolve workspace root when running widget preview from member package (flutter/flutter#190952)
2026-08-24 dacoharkes@google.com [native_assets] Roll native packages (flutter/flutter#191253)
2026-08-24 bkonyi@google.com [flutter_tools] Add --force flag to flutter channel (flutter/flutter#191579)
2026-08-24 engine-flutter-autoroll@skia.org Roll Skia from 57968d087d18 to 698c60bf58f1 (1 revision) (flutter/flutter#191577)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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Please CC bmparr@google.com,stuartmorgan@google.com on the revert to ensure that a human
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To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose

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@justinmc justinmc mentioned this pull request Aug 28, 2026
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victorsanni pushed a commit to victorsanni/packages that referenced this pull request Sep 9, 2026
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Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions) (flutte…
ed6616d 
…r#12619)

Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions)

flutter/flutter@9a82789...15d8908

2026-08-25 engine-flutter-autoroll@skia.org Roll Packages from df2ba94 to 740f093 (17 revisions) (flutter/flutter#191734)
2026-08-25 dacoharkes@google.com [record_use] Remove const_finder (flutter/flutter#191702)
2026-08-25 48625061+muradhossin@users.noreply.github.com Warn when SwiftPM is disabled (flutter/flutter#188695)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from b1a31575c373 to 480540178356 (1 revision) (flutter/flutter#191723)
2026-08-25 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#191726)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from bfa276ed9ac5 to b1a31575c373 (1 revision) (flutter/flutter#191717)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 0818e6dc28cc to 8996935d3d0a (2 revisions) (flutter/flutter#191706)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 31799e707cd4 to bfa276ed9ac5 (1 revision) (flutter/flutter#191701)
2026-08-25 chris@bracken.jp iOS: Add null check for touch rate correction task runner (flutter/flutter#191641)
2026-08-25 chris@bracken.jp iOS: Add test for engineAllowHeadlessExecution (flutter/flutter#191635)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from cfae2af1bfeb to 31799e707cd4 (4 revisions) (flutter/flutter#191649)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 2b75c83ddd77 to 0818e6dc28cc (1 revision) (flutter/flutter#191643)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 4a2fddefd3d8 to cfae2af1bfeb (1 revision) (flutter/flutter#191642)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 256c15026b91 to 4a2fddefd3d8 (6 revisions) (flutter/flutter#191633)
2026-08-25 97480502+b-luk@users.noreply.github.com Remove octant_offset_c uniform from ubersdf, reorder/document ubersdf uniforms (flutter/flutter#191597)
2026-08-25 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 8Xu4ujBJniC0nQGx3... to MstTWE1RDOT-RnrtH... (flutter/flutter#191621)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 78bbc37b6ff6 to 2b75c83ddd77 (3 revisions) (flutter/flutter#191614)
2026-08-24 bkonyi@google.com [flutter_tools] Fix $git typo in shared.bat to restore cache invalidation on Windows (flutter/flutter#191217)
2026-08-24 87962825+kyungilcho@users.noreply.github.com Skip removed observers during app exit requests (flutter/flutter#190343)
2026-08-24 bkonyi@google.com [engine] Support UTF-8 paths in Windows filesystem and path APIs (flutter/flutter#191360)
2026-08-24 okorohelijah@google.com Migrate ios driver tests batch 3 to simulators (flutter/flutter#191333)
2026-08-24 jmccandless@google.com Migrate texture example to material_ui (flutter/flutter#190673)
2026-08-24 116356835+AbdeMohlbi@users.noreply.github.com Remove outdated test todo about `dither` property of `Paint` (flutter/flutter#190936)
2026-08-24 47866232+chunhtai@users.noreply.github.com Add agent rule to prevent using material and cupertino in widget tests (flutter/flutter#191588)
2026-08-24 bkonyi@google.com [flutter_tools] Prevent crash when stdout is broken and print fails (flutter/flutter#191356)
2026-08-24 robert.ancell@canonical.com Add FlViewRendererSubsurface (flutter/flutter#191389)
2026-08-24 43054281+camsim99@users.noreply.github.com [Android] Inject `route` into manifest when specified on the command line in release mode (flutter/flutter#191328)
2026-08-24 269567208+reidbaker-agent@users.noreply.github.com [AGP 9.1.0 Migration flutter#3] Add buildModeFor overloads and wire Flutter dependencies through the new DSL (flutter/flutter#191218)
2026-08-24 engine-flutter-autoroll@skia.org Roll Skia from 698c60bf58f1 to 256c15026b91 (1 revision) (flutter/flutter#191586)
2026-08-24 15619084+vashworth@users.noreply.github.com On iOS 27+ devices, manually process lldb stops (flutter/flutter#191434)
2026-08-24 bkonyi@google.com [flutter_tools] Handle missing Xcode gracefully in getInfo and buildMacOS (flutter/flutter#191180)
2026-08-24 bkonyi@google.com [flutter_tools] Handle null version gracefully in CachedArtifact and MaterialFonts (flutter/flutter#191494)
2026-08-24 bkonyi@google.com [flutter_tools] Do not treat 'daemon' argument as daemon command in logger initialization (flutter/flutter#191442)
2026-08-24 bkonyi@google.com [flutter_tools] Resolve workspace root when running widget preview from member package (flutter/flutter#190952)
2026-08-24 dacoharkes@google.com [native_assets] Roll native packages (flutter/flutter#191253)
2026-08-24 bkonyi@google.com [flutter_tools] Add --force flag to flutter channel (flutter/flutter#191579)
2026-08-24 engine-flutter-autoroll@skia.org Roll Skia from 57968d087d18 to 698c60bf58f1 (1 revision) (flutter/flutter#191577)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-packages
Please CC bmparr@google.com,stuartmorgan@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose

...
victorsanni pushed a commit to victorsanni/packages that referenced this pull request Sep 9, 2026
@engine-flutter-autoroll @victorsanni
Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions) (flutte…
0f4e9a9 
…r#12619)

Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions)

flutter/flutter@9a82789...15d8908

2026-08-25 engine-flutter-autoroll@skia.org Roll Packages from df2ba94 to 740f093 (17 revisions) (flutter/flutter#191734)
2026-08-25 dacoharkes@google.com [record_use] Remove const_finder (flutter/flutter#191702)
2026-08-25 48625061+muradhossin@users.noreply.github.com Warn when SwiftPM is disabled (flutter/flutter#188695)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from b1a31575c373 to 480540178356 (1 revision) (flutter/flutter#191723)
2026-08-25 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#191726)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from bfa276ed9ac5 to b1a31575c373 (1 revision) (flutter/flutter#191717)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 0818e6dc28cc to 8996935d3d0a (2 revisions) (flutter/flutter#191706)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 31799e707cd4 to bfa276ed9ac5 (1 revision) (flutter/flutter#191701)
2026-08-25 chris@bracken.jp iOS: Add null check for touch rate correction task runner (flutter/flutter#191641)
2026-08-25 chris@bracken.jp iOS: Add test for engineAllowHeadlessExecution (flutter/flutter#191635)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from cfae2af1bfeb to 31799e707cd4 (4 revisions) (flutter/flutter#191649)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 2b75c83ddd77 to 0818e6dc28cc (1 revision) (flutter/flutter#191643)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 4a2fddefd3d8 to cfae2af1bfeb (1 revision) (flutter/flutter#191642)
2026-08-25 engine-flutter-autoroll@skia.org Roll Skia from 256c15026b91 to 4a2fddefd3d8 (6 revisions) (flutter/flutter#191633)
2026-08-25 97480502+b-luk@users.noreply.github.com Remove octant_offset_c uniform from ubersdf, reorder/document ubersdf uniforms (flutter/flutter#191597)
2026-08-25 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 8Xu4ujBJniC0nQGx3... to MstTWE1RDOT-RnrtH... (flutter/flutter#191621)
2026-08-25 engine-flutter-autoroll@skia.org Roll Dart SDK from 78bbc37b6ff6 to 2b75c83ddd77 (3 revisions) (flutter/flutter#191614)
2026-08-24 bkonyi@google.com [flutter_tools] Fix $git typo in shared.bat to restore cache invalidation on Windows (flutter/flutter#191217)
2026-08-24 87962825+kyungilcho@users.noreply.github.com Skip removed observers during app exit requests (flutter/flutter#190343)
2026-08-24 bkonyi@google.com [engine] Support UTF-8 paths in Windows filesystem and path APIs (flutter/flutter#191360)
2026-08-24 okorohelijah@google.com Migrate ios driver tests batch 3 to simulators (flutter/flutter#191333)
2026-08-24 jmccandless@google.com Migrate texture example to material_ui (flutter/flutter#190673)
2026-08-24 116356835+AbdeMohlbi@users.noreply.github.com Remove outdated test todo about `dither` property of `Paint` (flutter/flutter#190936)
2026-08-24 47866232+chunhtai@users.noreply.github.com Add agent rule to prevent using material and cupertino in widget tests (flutter/flutter#191588)
2026-08-24 bkonyi@google.com [flutter_tools] Prevent crash when stdout is broken and print fails (flutter/flutter#191356)
2026-08-24 robert.ancell@canonical.com Add FlViewRendererSubsurface (flutter/flutter#191389)
2026-08-24 43054281+camsim99@users.noreply.github.com [Android] Inject `route` into manifest when specified on the command line in release mode (flutter/flutter#191328)
2026-08-24 269567208+reidbaker-agent@users.noreply.github.com [AGP 9.1.0 Migration flutter#3] Add buildModeFor overloads and wire Flutter dependencies through the new DSL (flutter/flutter#191218)
2026-08-24 engine-flutter-autoroll@skia.org Roll Skia from 698c60bf58f1 to 256c15026b91 (1 revision) (flutter/flutter#191586)
2026-08-24 15619084+vashworth@users.noreply.github.com On iOS 27+ devices, manually process lldb stops (flutter/flutter#191434)
2026-08-24 bkonyi@google.com [flutter_tools] Handle missing Xcode gracefully in getInfo and buildMacOS (flutter/flutter#191180)
2026-08-24 bkonyi@google.com [flutter_tools] Handle null version gracefully in CachedArtifact and MaterialFonts (flutter/flutter#191494)
2026-08-24 bkonyi@google.com [flutter_tools] Do not treat 'daemon' argument as daemon command in logger initialization (flutter/flutter#191442)
2026-08-24 bkonyi@google.com [flutter_tools] Resolve workspace root when running widget preview from member package (flutter/flutter#190952)
2026-08-24 dacoharkes@google.com [native_assets] Roll native packages (flutter/flutter#191253)
2026-08-24 bkonyi@google.com [flutter_tools] Add --force flag to flutter channel (flutter/flutter#191579)
2026-08-24 engine-flutter-autoroll@skia.org Roll Skia from 57968d087d18 to 698c60bf58f1 (1 revision) (flutter/flutter#191577)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-packages
Please CC bmparr@google.com,stuartmorgan@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose

...
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@gaaclarke gaaclarke gaaclarke approved these changes
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