#14972: MacOS panic on TH -------------------------------------+------------------------------------- Reporter: harpocrates | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.4.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by ezyang): This is even simpler to reproduce: `ghc --interactive` doesn't work on Mac OS X: {{{ MacBook-Pro-97:unifier-ghc ezyang$ ~/Dev/ghc/inplace/bin/ghc-stage2 --interactive GHCi, version 8.5.20180327: http://www.haskell.org/ghc/ :? for help ghc-stage2: loadArchive: Failed reading header from `/Users/ezyang/Dev/ghc/libraries/integer-gmp/dist-install/build/gmp' ghc-stage2: panic! (the 'impossible' happened) (GHC version 8.5.20180327 for x86_64-apple-darwin): loadArchive "/Users/ezyang/Dev/ghc/libraries/integer-gmp/dist- install/build/gmp": failed Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} This was a 'perf' build of: {{{ commit b58282a009ae67cbd4befbe062452026c82afd51 (HEAD -> master, origin/master, origin/HEAD) Author: Ben Gamari <ben@smart-cactus.org> Date: Tue Mar 27 09:57:01 2018 -0400 More format string fixes }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14972#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler