Pattern quotations warn about unused matches
If I say
{-# LANGUAGE TemplateHaskell #-}
{-# OPTIONS_GHC -fwarn-unused-matches #-}
module Pat where
foo = [p| (x, y) |]I get
Pat.hs:6:12: Warning: Defined but not used: ‘x’
Pat.hs:6:15: Warning: Defined but not used: ‘y’This is silly.
Patch forthcoming.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.8.3 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Template Haskell |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |