#7695: Hang when locale-archive and gconv-modules are not there -------------------------------------+------------------------------------- Reporter: hpd | Owner: Type: bug | Status: closed Priority: highest | Milestone: 7.10.2 Component: None | Version: 7.8.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime crash | Unknown/Multiple Blocked By: | Test Case: Related Tickets: #8977, #10298 | Blocking: | Differential Revisions: Phab:D898 -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"d69dfba4e27c4ec33459906fd87c9a56a371f510/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="d69dfba4e27c4ec33459906fd87c9a56a371f510" Fix self-contained handling of ASCII encoding D898 was primarily intended to fix hangs in the event that iconv was unavailable (namely #10298 and #7695). In addition to this fix, it also introduced self-contained handling of ANSI terminals to allow compiled executables to run in minimal environments lacking iconv. However, the behavior that the patch introduced is highly suspicious. Specifically, it gives the user a UTF-8 encoding even if they requested ASCII. This has the potential to break quite a lot of code. At very least it breaks GHC's Unicode terminal detection logic, which attempts to catch an invalid character when encoding a pair of smart-quotes. Of course, this exception will never be thrown if a UTF-8 encoder is used. Here we use the `char8` encoding to handle requests for ASCII encodings in the event that we find iconv to be non-functional. Fixes #10623. Test Plan: Validate with T8959a Reviewers: rwbarton, hvr, austin, hsyl20 Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1059 GHC Trac Issues: #10623 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7695#comment:23 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler