[GHC] #10957: getExecutablePath adds " (deleted)" suffix if executable was deleted under linux
#10957: getExecutablePath adds " (deleted)" suffix if executable was deleted under linux -------------------------------------+------------------------------------- Reporter: aslpavel | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Core | Version: 7.10.2 Libraries | Keywords: | Operating System: Linux Architecture: | Type of failure: Incorrect result Unknown/Multiple | at runtime Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- If we remove current executable or update it with a new one, getExecutablePath returns path with added " (deleted)" suffix. I think it is incorrect behavior , for example if you updated binary and want to exec a new one, the obvious way to go is to call getExecutablePath and use it. Moreover it is inconsistent between platforms. Problem stems from the fact the getExecutablePath is implemented as readlink on /proc/self/exe and it contains gibberish once file has been deleted. Example: {{{#!hs module Main (main) where import System.Environment (getExecutablePath) import System.Directory (removeFile) main :: IO () main = do before <- getExecutablePath putStrLn $ "Before: " ++ before removeFile before after <- getExecutablePath putStrLn $ "After: " ++ after }}} Output: {{{ $ ./getExecutablePath Before: /mnt/data/Maggot/getExecutablePath After: /mnt/data/Maggot/getExecutablePath (deleted) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10957 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#10957: getExecutablePath adds " (deleted)" suffix if executable was deleted under linux -------------------------------------+------------------------------------- Reporter: aslpavel | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 7.10.2 Resolution: | Keywords: Operating System: Linux | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by thomie): What are you proposing? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10957#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#10957: getExecutablePath adds " (deleted)" suffix if executable was deleted under linux -------------------------------------+------------------------------------- Reporter: aslpavel | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 7.10.2 Resolution: | Keywords: Operating System: Linux | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by aslpavel): API break is not very good choice, otherwise I would suggest return some optional type, so we can add an explicit hack to handle this Linux quirk by either returning trimmed string or throwing an exceptin -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10957#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#10957: getExecutablePath adds " (deleted)" suffix if executable was deleted under linux -------------------------------------+------------------------------------- Reporter: aslpavel | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 7.10.2 Resolution: | Keywords: Operating System: Linux | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by oherrala): * cc: oherrala (added) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10957#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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