#14051: Unboxed sums-related panic: getUnboxedSumName 513 -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.1-rc2 Resolution: | Keywords: UnboxedSums Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * cc: bgamari (added) * failure: GHC accepts invalid program => None/Unknown * component: Compiler (Type checker) => Compiler Comment: The fact that the code in `Main` doesn't typecheck is unimportant, since you can also trigger the panic with this code that does typecheck: {{{#!hs -- Bug.hs {-# LANGUAGE UnboxedSums #-} module Main where import Testing main :: IO () main = print $ case func () of (# True | #) -> 123 _ -> 321 }}} cc'ing Ben, who wrote the `getUnboxedSumName` function in 34d933d6a821edf5abfcbee76d9325362fc28a13. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14051#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler