#5813: Offer a compiler warning for failable pattern matches
---------------------------------+------------------------------------------
Reporter: snoyberg | Owner:
Type: feature request | Status: new
Priority: normal | Milestone: 7.6.1
Component: Compiler | Version: 7.2.2
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
---------------------------------+------------------------------------------
Comment(by maeder):
Replying to [comment:5 simonmar]:
> In reply to maeder: the manual desugaring you describe is not semantics-
preserving, so it's not surprising that you suddently get a new warning.
I know, the missing cases are turned into nice _fail_ message (including
the file position) that I would like to create explicitly by a suitable
(non-pure?) function.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5813#comment:6>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
_______________________________________________
Glasgow-haskell-bugs mailing list
Glasgow-haskell-bugs@haskell.org
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
