Make sure that a CheckedModeBanner doesn't crash in 0x0 environment #180280
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This pull request adds a regression test for issue #6537, where CheckedModeBanner crashes when painting in a zero-sized area. The test correctly reproduces the scenario by wrapping a CheckedModeBanner in a SizedBox.shrink and appears to be well-written. However, the pull request seems to be incomplete as it does not contain the fix for the bug it's testing against. The fix, as suggested in the issue, would likely involve adding a check at the beginning of BannerPainter.paint to return early if the canvas size is empty. Assuming the fix will be added in a subsequent commit, this test is a good addition to prevent future regressions.
dkwingsmt
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Dec 26, 2025
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Checklist:
- The test is in the correct file
- The test name goes “does not crash at zero area”
- The target widget is wrapped by
Center(or is fullscreen) - The target widget does not have an overlay, or the overlay is tested
- The target widget is expected to have a size of exactly
Size.zero
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Roll Flutter from 60d8165 to 13b2b91 (34 revisions) flutter/flutter@60d8165...13b2b91 2026-01-03 engine-flutter-autoroll@skia.org Roll Skia from 229239fde9e9 to 2f257bbea23a (1 revision) (flutter/flutter#180461) 2026-01-03 engine-flutter-autoroll@skia.org Roll Dart SDK from be125a188f41 to 8e711d05b844 (1 revision) (flutter/flutter#180460) 2026-01-03 engine-flutter-autoroll@skia.org Roll Dart SDK from 0e6419d14382 to be125a188f41 (1 revision) (flutter/flutter#180454) 2026-01-02 engine-flutter-autoroll@skia.org Roll Dart SDK from 5e4b7dc3a134 to 0e6419d14382 (4 revisions) (flutter/flutter#180449) 2026-01-02 engine-flutter-autoroll@skia.org Roll Skia from 5a8d480365e2 to 229239fde9e9 (9 revisions) (flutter/flutter#180448) 2026-01-02 47866232+chunhtai@users.noreply.github.com Relands "Feat: Add a11y for loading indicators (#165173)" (flutter/flutter#178402) 2026-01-02 bungeman@chromium.org Add SK_SUPPORT_LEGACY_UNSPANNED_GRADIENTS to SkUserConfig.h (flutter/flutter#180443) 2026-01-02 jmccandless@google.com Some cleanup of cross library test imports (flutter/flutter#177029) 2026-01-02 engine-flutter-autoroll@skia.org Roll Dart SDK from df175c998021 to 5e4b7dc3a134 (1 revision) (flutter/flutter#180366) 2026-01-02 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from nzgy72aZ9kvHxTDM6... to 1pPgo5DrQ5ITdz3Uy... (flutter/flutter#180438) 2026-01-01 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 23suNuzNQCwRbDrys... to nzgy72aZ9kvHxTDM6... (flutter/flutter#180424) 2025-12-31 srawlins@google.com Remove @OverRide annotations from things which are not overrides (flutter/flutter#180417) 2025-12-31 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from t1eBl_kzKGV5K28OU... to 23suNuzNQCwRbDrys... (flutter/flutter#180409) 2025-12-31 engine-flutter-autoroll@skia.org Roll Skia from 8851d5318c9d to 5a8d480365e2 (1 revision) (flutter/flutter#180400) 2025-12-31 ahmedsameha1@gmail.com Make sure that a DecoratedBox doesn't crash in 0x0 environment (flutter/flutter#180329) 2025-12-31 engine-flutter-autoroll@skia.org Roll Skia from d0e12d575173 to 8851d5318c9d (2 revisions) (flutter/flutter#180399) 2025-12-31 iliyazelenkog@gmail.com Improve Container color/decoration error message clarity (flutter/flutter#178823) 2025-12-30 ahmedsameha1@gmail.com Make sure that a CheckedModeBanner doesn't crash in 0x0 environment (flutter/flutter#180280) 2025-12-30 engine-flutter-autoroll@skia.org Roll Skia from 32c27424accb to d0e12d575173 (1 revision) (flutter/flutter#180394) 2025-12-30 dkwingsmt@users.noreply.github.com [Framework] iOS style blurring and `ImageFilterConfig` (flutter/flutter#175473) 2025-12-30 evanwall@buffalo.edu Fix issue with getUniformFloat crashing with hot reload (flutter/flutter#180138) 2025-12-30 jmccandless@google.com Test cross import lint (flutter/flutter#178693) 2025-12-30 engine-flutter-autoroll@skia.org Roll Skia from d64da765cee6 to 32c27424accb (1 revision) (flutter/flutter#180393) 2025-12-30 engine-flutter-autoroll@skia.org Roll Skia from 4c438e0537fc to d64da765cee6 (1 revision) (flutter/flutter#180390) 2025-12-30 engine-flutter-autoroll@skia.org Roll Packages from b3c3ca8 to 30dd810 (1 revision) (flutter/flutter#180388) 2025-12-30 engine-flutter-autoroll@skia.org Roll Skia from 27b587c4b160 to 4c438e0537fc (1 revision) (flutter/flutter#180384) 2025-12-30 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from DdllqZRZYriOd7Q8v... to t1eBl_kzKGV5K28OU... (flutter/flutter#180378) 2025-12-30 engine-flutter-autoroll@skia.org Roll Skia from 11690456a90d to 27b587c4b160 (1 revision) (flutter/flutter#180377) 2025-12-30 evanwall@buffalo.edu Allow setting vector uniforms by name. (flutter/flutter#179927) 2025-12-30 engine-flutter-autoroll@skia.org Roll Skia from 7abf754bce14 to 11690456a90d (6 revisions) (flutter/flutter#180374) 2025-12-29 logic@deltaq.org Add support for Shift-Delete, Ctrl-Insert and Shift-Insert (flutter/flutter#178561) 2025-12-29 engine-flutter-autoroll@skia.org Roll Skia from c85d3e2b12d7 to 7abf754bce14 (1 revision) (flutter/flutter#180371) 2025-12-29 engine-flutter-autoroll@skia.org Roll Packages from 2164da9 to b3c3ca8 (2 revisions) (flutter/flutter#180365) 2025-12-29 engine-flutter-autoroll@skia.org Roll Skia from c29a475066f5 to c85d3e2b12d7 (1 revision) (flutter/flutter#180363) 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 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 To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 ...
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This is my attempt to handle #6537 for the CheckedModeBanner widget.