Set TextStyle(height: double.nan), App Crash #175248

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4. PaniniA commented on Sep 12, 2025

   

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6. PaniniA commented on Sep 12, 2025

   

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   abstract final class double extends num {
   static const double nan = 0.0 / 0.0;
   // ...
   // ...
   }
   I do not think so height can be nan.

   @PaniniA For us to further investigate this issue, please provide a completed and minimal reproducible code sample that doesn’t include 3rd party plugins or complex production code. Also, please share the output flutter doctor -v. Thank you!

   Text('data',style: TextStyle(fontSize: 0, height: 0 / 0)), Set the fontSize to 0 and the height to 0/0 at the same time, then wait for many seconds, My app crashed

   

   👀React with 👀1Reacted by Mohellebi Abdessalem
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17. tirth-patel-nc

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    has reproducible stepsThe issue has been confirmed reproducible and is ready to work onThe issue has been confirmed reproducible and is ready to work on

    found in release: 3.35Found to occur in 3.35Found to occur in 3.35

    found in release: 3.37Found to occur in 3.37Found to occur in 3.37

    frameworkflutter/packages/flutter repository. See also f: labels.flutter/packages/flutter repository. See also f: labels.

    p: material_uimaterial_ui package in flutter/packagesmaterial_ui package in flutter/packages

    d: api docsIssues with https://api.flutter.dev/Issues with https://api.flutter.dev/

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19. justinmc commented on Sep 16, 2025

    

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    I guess this probably shouldn't work, but we should have a much better error message and a consistent outcome on every platform.

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20. AbdeMohlbi commented on Oct 1, 2025

    

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    I think this can be prevented by adding an assert to text_style.dart ?
21. auto-submit

    closed this as completedin #186617on Jul 10, 2026
22. pull

    added a commit that references this issue on Jul 10, 2026

    Assert TextStyle height is not NaN (flutter#186617)

    ...

    bc6a4c8
23. github-actions commented on Jul 24, 2026

    

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    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.
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    locked as resolved and limited conversation to collaborators on Jul 24, 2026