February 2015 - ghc-tickets

Re: [GHC] #3649: inconsistent exception between unix/windows for running non-existant program
by GHC 17 Feb '15

17 Feb '15

#3649: inconsistent exception between unix/windows for running non-existant program -------------------------------------+------------------------------------- Reporter: duncan | Owner: snoyberg Type: bug | Status: closed Priority: low | Milestone: 7.12.1 Component: Core Libraries | Version: 6.10.4 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by snoyberg): * status: new => closed * resolution: => fixed Comment: Duncan, I've implemented a fix for this at: https://github.com/snoyberg/process/commit/2fe95e32adff6d03cd04e3cf0f6d99f6…. I'm going to close this issue as resolved, if there is still a problem please reopen. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3649#comment:15> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9135: readProcessWithExitCode leaks when the program does not exist
by GHC 17 Feb '15

17 Feb '15

#9135: readProcessWithExitCode leaks when the program does not exist -------------------------------------+------------------------------------- Reporter: luite | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: libraries/process | Version: 7.8.2 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- {{{#!haskell import Control.Monad import System.Process import qualified Control.Exception as C try' :: IO a -> IO (Either C.SomeException a) try' = C.try main = replicateM_ 1000 $ do try' (readProcessWithExitCode "doesnotexist" [] "") print =<< try' (readProcessWithExitCode "/bin/echo" ["it works"] "") }}} This eventually runs out of file descriptors and fails to start the existing process. Tested with process 1.2.0.0 and GHC 7.8.2 on OS X -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9135> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8844: Pseudo terminal and process-1.2.0.0
by GHC 17 Feb '15

17 Feb '15

#8844: Pseudo terminal and process-1.2.0.0 -------------------------------------+------------------------------------- Reporter: ksamborski | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: libraries/process | Version: 7.6.3 Keywords: pty | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- Hello, I'm writing simple app which execute process and communicate with it via pseudo terminal. Here is some sample code: import System.Posix.Terminal import System.Process main = do (master, slave) <- openPseudoTerminal hslave <- fdToHandle slave hSetBuffering hslave NoBuffering (_,_,_,ph) <- createProcess (shell "mc"){ env = Just [("TERM", "xterm")] , std_in = UseHandle hslave , std_out = UseHandle hslave , std_err = UseHandle hslave , close_fds = True } forkIO $ readTerm master -- my function which reads output from process waitForProcess ph The problem is that mc still wants some input from stdin but not from slave terminal. But when I changed function runIteractiveProcess from runProcess.c like this: ... /* Reset the SIGINT/SIGQUIT signal handlers in the child, if requested */ if (reset_int_quit_handlers) { struct sigaction dfl; (void)sigemptyset(&dfl.sa_ mask); dfl.sa_flags = 0; dfl.sa_handler = SIG_DFL; (void)sigaction(SIGINT, &dfl, NULL); (void)sigaction(SIGQUIT, &dfl, NULL); } /********************************************************************************/ setsid(); //Make the current process a new session leader ioctl(0, TIOCSCTTY, 1); //As the child is a session leader, set the controlling terminal to be the slave side of the PTY /********************************************************************************/ /* the child */ if (environment) { // XXX Check result execvpe(args[0], args, environment); } else { // XXX Check result execvp(args[0], args); } childFailed(forkCommunicationFds[1], forkExecFailed); ... it worked as expected, I'm not proposing patch or solution but is there any chance to add support for pseudo terminals in the process library? Maybe just add another record field in CreateProcess like pty :: Bool and then call these two additional instructions in runIteractiveProcess? Best regards, Karol Samborski -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8844> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7997: waitForProcess and getProcessExitCode are unsafe against asynchronous exceptions
by GHC 17 Feb '15

17 Feb '15

#7997: waitForProcess and getProcessExitCode are unsafe against asynchronous exceptions -------------------------------------+------------------------------------- Reporter: dfranke | Owner: snoyberg Type: bug | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by snoyberg): * cc: core-libraries-committee@… (added) * owner: ekmett => snoyberg -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7997#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5761: Getting stdout and stderr as a single handle from createProcess does not work on Windows
by GHC 17 Feb '15

17 Feb '15

#5761: Getting stdout and stderr as a single handle from createProcess does not work on Windows -------------------------------------+------------------------------------- Reporter: SimonHengel | Owner: snoyberg Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Core Libraries | Version: Resolution: | Keywords: Operating System: Windows | Architecture: x86 Type of failure: Incorrect result | Test Case: at runtime | Blocking: Blocked By: | Differential Revisions: Related Tickets: | -------------------------------------+------------------------------------- Changes (by snoyberg): * cc: core-libraries-committee@… (added) * owner: ekmett => snoyberg -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5761#comment:9> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3998: strace breaks System.Process(?)
by GHC 17 Feb '15

17 Feb '15

#3998: strace breaks System.Process(?) -------------------------------------+------------------------------------- Reporter: greenrd | Owner: snoyberg Type: bug | Status: new Priority: normal | Milestone: ⊥ Component: Core Libraries | Version: 6.12.1 Resolution: | Keywords: Operating System: Linux | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by snoyberg): * cc: core-libraries-committee@… (added) * owner: ekmett => snoyberg -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3998#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3649: inconsistent exception between unix/windows for running non-existant program
by GHC 17 Feb '15

17 Feb '15

#3649: inconsistent exception between unix/windows for running non-existant program -------------------------------------+------------------------------------- Reporter: duncan | Owner: snoyberg Type: bug | Status: new Priority: low | Milestone: 7.12.1 Component: Core Libraries | Version: 6.10.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by snoyberg): * cc: core-libraries-committee@… (added) * owner: ekmett => snoyberg -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3649#comment:14> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5376: Quotation in System.Process.system for Windows
by GHC 17 Feb '15

17 Feb '15

#5376: Quotation in System.Process.system for Windows -------------------------------------+------------------------------------- Reporter: simonpj | Owner: snoyberg Type: bug | Status: new Priority: low | Milestone: 7.12.1 Component: Core Libraries | Version: 7.0.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by snoyberg): * cc: core-libraries-committee@… (added) * owner: ekmett => snoyberg -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5376#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2123: implement waitForProcess using signals
by GHC 17 Feb '15

17 Feb '15

#2123: implement waitForProcess using signals -------------------------------------+------------------------------------- Reporter: simonmar | Owner: snoyberg Type: task | Status: new Priority: lowest | Milestone: 7.12.1 Component: Core Libraries | Version: 6.8.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by snoyberg): * cc: core-libraries-committee@… (added) * owner: ekmett => snoyberg -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2123#comment:18> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3628: exceptions reported to stderr when they propagate past forkIO
by GHC 17 Feb '15

17 Feb '15

#3628: exceptions reported to stderr when they propagate past forkIO -------------------------------------+------------------------------------- Reporter: duncan | Owner: ekmett Type: bug | Status: new Priority: normal | Milestone: ⊥ Component: Core Libraries | Version: 6.10.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by snoyberg): * cc: core-libraries-committee@… (added) * failure: => None/Unknown Comment: I'm in favor of closing this issue: it doesn't not seem like something we are going to change at this point. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3628#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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