Template Haskell should warn about non-exhaustive pattern matches
When using Typed Template Haskell, There are no warings for non-exhaustive patterns inside the quote.
{-# LANGUAGE TemplateHaskell #-}
module Foo where
import Language.Haskell.TH.Lib
foo :: Maybe Int -> TExpQ Bool
foo x = [||case x of
Nothing -> False||]
Instead the warnings appear where the code is spliced.
{-# LANGUAGE TemplateHaskell #-}
module Bar where
import Foo
x = $$(foo (Just 1))
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.8.2 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Template Haskell |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |