[ANR] Curves.easeOut.transform({value>1.0}) triggers ANR #171364
Description
Steps to reproduce
- Create a button:
FilledButton(
onPressed: () {
Curves.easeOut.transform(2.0);
},
child: Text("ANR Test"),
),
- Run the app in release mode on any Oneplus/Vivo/oppo devices and press the button. The while loop in Cubic.transformInternal runs indefinitely
- Touch anything on the app
- You'll see You app not responding
Expected results
Throw an exception or resolve the loop/ANR
Actual results
The code Cubic.transformInternal > while loop runs indefinitely
Code sample
Code sample
FilledButton(
onPressed: () {
Curves.easeOut.transform(2.0);
},
child: Text("ANR Test"),
),Screenshots or Video
Screenshots / Video demonstration
Logs
Logs of Cubic.transformInternal
I/flutter (32736): Cubic: start=1.0, end=1.0, t=2.0
I/flutter (32736): Cubic: start=1.0, end=1.0, t=2.0
...Flutter Doctor output
Doctor output
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.29.3, on macOS 15.5 24F74 darwin-arm64, locale en-IN)
[✓] Android toolchain - develop for Android devices (Android SDK version 36.0.0)
[✗] Xcode - develop for iOS and macOS
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sudo xcodebuild -runFirstLaunch
✗ CocoaPods not installed.
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[✓] Chrome - develop for the web
[✓] Android Studio (version 2025.1)
[✓] Connected device (3 available)
[✓] Network resources