Invalid warning from GHCi
C:\Neil>ghci -Wall
GHCi, version 6.10.3.20090530: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer ... linking ... done.
Loading package base ... linking ... done.
Prelude> x <- return True
<interactive>:1:0: Warning: Defined but not used: `x'
Prelude> x
True
Prelude>
This error comes up in practice when writing .ghci files, for example for HLint. The user who reported it to me was running GHC 6.12.1.
Trac metadata
Trac field | Value |
---|---|
Version | 6.10.4 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | GHCi |
Test case | |
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Blocking | |
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