#9823: --show-iface panics with HEAD -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Driver | Version: 7.9 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Moderate (less | Type of failure: GHC than a day) | doesn't work at all Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Let's say I compile an empty module: {{{#!hs module Foo where }}} Now, this works: {{{ ghc-stage2 --show-iface Foo.hi }}} But this panics: {{{ ghc-stage2 Foo.hi --show-iface ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20141120 for x86_64-unknown-linux): ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20141120 for x86_64-unknown-linux): v_unsafeGlobalDynFlags: not initialised Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} Does not happen with 7.8.3. I guess one of recent DynFlags changes must have caused this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9823 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler