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 | |
| Differential revisions | |
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| CC | |
| Operating system | |
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