#13576: Runtime crashes on arm64 (iOS) ----------------------------------+------------------------------- Reporter: jp.rider63 | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: Resolution: | Keywords: Operating System: MacOS X | Architecture: aarch64 Type of failure: Runtime crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ----------------------------------+------------------------------- Comment (by jp.rider63): As mentioned on irc, applying D3290 before building the cross-compiler did not work. The diff of nm is ~800k lines so I don't think it will be much help (the x86 library was built with a different version of ghc so there are different library versions and different symbols). I've been trying to create a minimal example to demonstrate the crash. So far I have had mixed results. Calling `hs_AAPublicKeyAlgorithm` by itself does cause the crash. Oddly, when I call `hs_testf` (defined below) before `hs_AAPublicKeyAlgorithm`, the crash goes away. {{{ class Test a b | a -> b where testF :: a -> b instance Test String String where testF = id foreign export ccall hs_astr :: IO (StablePtr String) hs_astr :: IO (StablePtr String) hs_astr = newStablePtr "a string" foreign export ccall hs_testf :: StablePtr String -> IO (StablePtr String) hs_testf :: StablePtr String -> IO (StablePtr String) hs_testf s = do s' <- deRefStablePtr s newStablePtr $ testF s' }}} I was thinking that maybe the functional dependency from `ToAlgorithm t a | t -> a` is causing the crash, but I'm not really sure. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13576#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler