On Fri, Apr 25, 2014 at 04:10:37PM +0200, Nicola Squartini wrote:
Hi,
I already mentioned this problem earlier on this mailing list, but now I have some extra information.
It's the following (on GHCi):
Prelude> :m Language.Haskell.Exts Prelude Language.Haskell.Exts> parseFileContents "main = putStrLn \"Hello World\"" Loading package array-0.5.0.0 ... linking ... done. Loading package filepath-1.3.0.2 ... linking ... done. Loading package deepseq-1.3.0.2 ... linking ... done. Loading package old-locale-1.0.0.6 ... linking ... done. Loading package time-1.4.2 ... linking ... done. Loading package bytestring-0.10.4.0 ... linking ... done. Loading package unix-2.7.0.1 ... linking ... done. Loading package directory-1.2.1.0 ... linking ... done. Loading package old-time-1.1.0.2 ... linking ... done. Loading package text-1.1.0.1 ... linking ... done. Loading package polyparse-1.9 ... linking ... done. Loading package cpphs-1.18.4 ... linking ... done. Loading package pretty-1.1.1.1 ... linking ... done. Loading package haskell-src-exts-1.15.0.1 ... linking ... done. Illegal instruction (core dumped)
This affects everything that depends on haskell-src-exts, like hlint and stylish-haskell. The bug shows up only on my two AMD Athlon II X2 computers, but not on my other Intel Sandybridge.
I think it is related to -fllvm flag because I didn't have this bug with the 1.15.0 version, which didn't have the flag.
Can someone with similar AMD architecture try to replicate it, please?
Ouch! The reason for using LLVM is this: http://ghc.haskell.org/trac/ghc/ticket/8768 So you probably should raise this as a ticket against GHC. I hope the last comment on that ticket is correct and that it's fixed in 7.8.3. /M -- Magnus Therning OpenPGP: 0xAB4DFBA4 email: magnus@therning.org jabber: magnus@therning.org twitter: magthe http://therning.org/magnus In a hierarchy, every employee tends to rise to his level of incompetence. -- The Peter Principle