#10298: Infinite loop when shared libraries are unavailable -------------------------------------+------------------------------------- Reporter: snoyberg | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: Component: Runtime System | Version: 7.10.1 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Runtime crash | (amd64) Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by hsyl20): I have an additional fix to propose for this bug: handle Unicode to ASCII conversions in GHC without Iconv: {{{ diff --git a/libraries/base/GHC/IO/Encoding.hs b/libraries/base/GHC/IO/Encoding.hs index 31683b4..c67f317 100644 --- a/libraries/base/GHC/IO/Encoding.hs +++ b/libraries/base/GHC/IO/Encoding.hs @@ -243,6 +243,7 @@ mkTextEncoding' cfm enc = case [toUpper c | c <- enc, c /= '-'] of "UTF32" -> return $ UTF32.mkUTF32 cfm "UTF32LE" -> return $ UTF32.mkUTF32le cfm "UTF32BE" -> return $ UTF32.mkUTF32be cfm + "ANSI_X3.41968" -> return char8 -- match "ANSI_X3.4-1968" (ASCII) #if defined(mingw32_HOST_OS) 'C':'P':n | [(cp,"")] <- reads n -> return $ CodePage.mkCodePageEncoding cfm cp _ -> unknownEncodingErr (enc ++ codingFailureModeSuffix cfm) }}} It seems that static binaries fall back to ASCII even if the current locale is UTF-8. ASCII is identified with the string "ANSI_X3.4-1968" on my system (Linux 4.0, glibc 2.21). Maybe we should match other possible aliases? I tested this patch with a single static binary in a initramfs and it works fine now. It should fix #7695 too (single static binary in a chrooted environment). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10298#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler