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DsIdentitiesFound -> 4214 #279

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PPKFS opened this issue Jun 13, 2022 · 1 comment

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type:error-message-index-task

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PPKFS commented Jun 13, 2022

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[Tasks] All tasks #307

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PPKFS added the type:error-message-index-task label

david-christiansen transferred this issue from haskell/error-messages

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BinderDavid commented Sep 3, 2023 •

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Corresponds to the warning -Widentities:

Causes the compiler to emit a warning when a Prelude numeric conversion converts a type T to the same type T; 
such calls are probably no-ops and can be omitted. 
The functions checked for are: toInteger, toRational, fromIntegral, and realToFrac.

GHC issue tracker which introduced this: https://gitlab.haskell.org/ghc/ghc/-/issues/4488

BinderDavid self-assigned this

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