unused variable warning in view pattern is wrong
{-# OPTIONS_GHC -Wall #-}
{-# LANGUAGE ViewPatterns #-}
test x = let (r,(r++) -> rs) = x in rs
Warning: Defined but not used: `r'
This seems only to happen in let (not in function clauses, or in lambdas, or in case).
Trac metadata
Trac field | Value |
---|---|
Version | 6.12.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | vogt.adam@gmail.com |
Operating system | |
Architecture |