#9964: GHC crash with NOINLINE and weird IO stuff -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Description changed by dfeuer: Old description:
{{{#!hs {-# LANGUAGE UnboxedTuples #-} module Crash where
import GHC.Base
crash :: IO Int crash = IO (\s -> let {-# NOINLINE s' #-} s' = s in (# s', 1::Int #)) }}}
This compiles under 7.6.3, but both 7.8.3 and head choke:
{{{ ghc: panic! (the 'impossible' happened) (GHC version 7.8.3 for x86_64-unknown-linux): StgCmmEnv: variable not found s{v sLw} [lid] local binds for:
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}}
New description: {{{#!hs {-# LANGUAGE UnboxedTuples #-} module Crash where import GHC.Base crash :: IO () crash = IO (\s -> let {-# NOINLINE s' #-} s' = s in (# s', () #)) }}} This compiles under 7.6.3, but both 7.8.3 and head choke: {{{ ghc: panic! (the 'impossible' happened) (GHC version 7.8.3 for x86_64-unknown-linux): StgCmmEnv: variable not found s{v sLw} [lid] local binds for: Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9964#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler