[GHC] #14871: With process substitiution, ghc didn't read filedescriptor.

28 Feb 2018

      #14871: With process substitiution, ghc didn't read filedescriptor.
-------------------------------------+-------------------------------------
           Reporter:  octaltree      |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.2.2
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 I ran ghc with process substitution as filename but ghc couldn't read the
 filedescriptor.
 I ran this script with bash and zsh, then I got the error.
 {{{#!sh
 #!/bin/sh
 H='''
 main = putStrLn "Hello, World!
 '''
 P='''
 print("Hello, World!")
 '''
 R='''
 puts "Hello, World!"
 '''

 stack ghc -- --version
 bash --version
 zsh --version
 cat --version
 python --version
 ruby --version
 echo '-----------------------'
 cat <(echo -n "$H")
 echo '-----------------------'
 stack ghc <(echo -n "$H")
 echo '-----------------------'
 python <(echo -n "$P")
 ruby <(echo -n "$R")
 }}}
 {{{
 The Glorious Glasgow Haskell Compilation System, version 8.2.2
 GNU bash, バージョン 4.4.19(1)-release (x86_64-unknown-linux-gnu)
 Copyright (C) 2016 Free Software Foundation, Inc.
 ライセンス GPLv3+: GNU GPL バージョン 3 またはそれ以降
 http://gnu.org/licenses/gpl.html

 This is free software; you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
 zsh 5.4.2 (x86_64-unknown-linux-gnu)
 cat (GNU coreutils) 8.29
 Copyright (C) 2017 Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later
 https://gnu.org/licenses/gpl.html.
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.

 作者 Torbjorn Granlund および Richard M. Stallman。
 Python 3.6.4
 ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-linux]
 -----------------------

 main = putStrLn "Hello, World!
 -----------------------
 target ‘/dev/fd/63’ is not a module name or a source file
 -----------------------
 Hello, World!
 /dev/fd/63: No such file or directory @ realpath_rec -
 /proc/4024/fd/pipe:[1855404] (Errno::ENOENT)
 }}}

 I already reported to ruby.

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14871
GHC http://www.haskell.org/ghc/
The Glasgow Haskell Compiler