#8306: NegativeLiterals allows negative type-level integers -------------------------------------+------------------------------------- Reporter: monoidal | Owner: thoughtpolice Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: GHC accepts | Difficulty: Easy (less than 1 invalid program | hour) Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------- Comment (by Austin Seipp ): In [changeset:3ee47002dd483e0daa604d37ec45dc33133ff04b/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="3ee47002dd483e0daa604d37ec45dc33133ff04b" Make sure type literals aren't negative (#8306) As Krzysztof pointed out in #8306, with NegativeLiterals and DataKinds, definitions such as: type T = -1 were accepted, although type literals must be greater than zero. Signed-off-by: Austin Seipp }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8306#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#8306: NegativeLiterals allows negative type-level integers -------------------------------------+------------------------------------- Reporter: monoidal | Owner: thoughtpolice Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: GHC accepts | Difficulty: Easy (less than 1 invalid program | hour) Test Case: | Blocked By: tests/typecheck/should_fail/T8306.hs| Related Tickets: Blocking: | -------------------------------------+------------------------------------- Changes (by thoughtpolice): * status: new => closed * testcase: => tests/typecheck/should_fail/T8306.hs * resolution: => fixed -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8306#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler