#12628: __GLASGOW_HASKELL_LLVM__ is no longer an Int -------------------------------------+------------------------------------- Reporter: nicolast | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.2 Component: Driver | Version: 8.0.1 Keywords: llvm cpp | Operating System: Unknown/Multiple Architecture: | Type of failure: Other Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- From the user guide (http://ghc.readthedocs.io/en/8.0.1/phases.html#index-8) {{{ __GLASGOW_HASKELL_LLVM__ Only defined when -fllvm is specified. When GHC is using version x.y.z of LLVM, the value of __GLASGOW_HASKELL_LLVM__ is the integer ⟨xy⟩. }}} This is not the case, though, due to 29310b622801733e1b29a9a61988406872db13ca which changes {{{figureLlvmVersion :: DynFlags -> IO (Maybe Int)}}} into {{{figureLlvmVersion :: DynFlags -> IO (Maybe (Int, Int))}}}, and the driver just {{{show}}}ing the result (https://github.com/ghc/ghc/blob/29310b622801733e1b29a9a61988406872db13ca/com...) As a result, the macro value which used to be a numeric value is now something like {{{(3, 7)}}}. I'm now using a work-around (https://github.com/NicolasT/reedsolomon/commit/9d25ad6a26a29c90b82daacbf4063...), but ''or'' the 'tuple value' should become 'official API', ''or'' this is a regression to be fixed. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12628 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler