Overlapping patterns warning misplaced
Consider
{-# OPTIONS_GHC -fwarn-overlapping-patterns #-}
len [] = 0
len (_:t) = 1 + len t
len _ = error "urk"GHC reports the problem with this definition at the first line of it. I think it would be more helpful to have it at the last line, which is the pattern that will never match.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.7 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | low |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |