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Bad interaction between prefer_int_literals and Enhanced type inference for generic invocations with function literals #58856

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Pante opened this issue Sep 5, 2022 · 1 comment
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analyzer-linter Issues with the analyzer's support for the linter package area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. linter-false-positive P3 A lower priority bug or feature request type-bug Incorrect behavior (everything from a crash to more subtle misbehavior)

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@Pante
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Pante commented Sep 5, 2022

Describe the issue
This issue is related to #58490

At the moment, there's a bad interaction between prefer_int_literals and Enhanced type inference for generic invocations with function literals introduced in 2.18.

The following snippet of code will cause the lint to emit a warning:

final sum = [1.0,  2.0].fold(0.0, (a, b) => a + b); // Triggered by 0.0

However, the code snippet is no longer valid once the suggested fix is applied.

final sum = [1.0,  2.0].fold(0, (a, b) => a + b); // Fails to compile with error: "The return type 'double' isn't a 'int', as required by the closure's context"
@pq
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pq commented Sep 6, 2022

Thanks for the report!

@bwilkerson bwilkerson added type-bug Incorrect behavior (everything from a crash to more subtle misbehavior) P3 A lower priority bug or feature request labels Oct 3, 2022
@devoncarew devoncarew added analyzer-linter Issues with the analyzer's support for the linter package area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. labels Nov 19, 2024
@devoncarew devoncarew transferred this issue from dart-lang/linter Nov 19, 2024
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Labels
analyzer-linter Issues with the analyzer's support for the linter package area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. linter-false-positive P3 A lower priority bug or feature request type-bug Incorrect behavior (everything from a crash to more subtle misbehavior)
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