getExecutablePath doesn't return absolute path on OpenBSD (and maybe other OS also)
System.Environment.getExecutablePath doesn't return absolute path to executable in OpenBSD. This happens because getExecutablePath uses argv[0] to determine path and argv[0] might not be absolute path.
My environment:
$ uname -a
OpenBSD fizbuz.pilkki.ciz.fi 6.0 GENERIC.MP#2274 amd64
$ ghc -V
The Glorious Glasgow Haskell Compilation System, version 7.10.3
This test program in OpenBSD:
module Main where
import System.Environment
main = getExecutablePath >>= print
returns
$ ./test
"./test"
For example in OS X the call returns absolute path:
$ ./test
"/Users/oherrala/tmp/test"
OpenBSD is one of the operating systems which gets fall back to using argv[0] to determine exec's location:
https://git.haskell.org/ghc.git/blob/HEAD:/libraries/base/System/Environment/ExecutablePath.hsc#l152
Maybe the argv[0] result should be wrapped with realpath(3) to get absolute path?
This bug is also present in cabal-install and reported here: https://github.com/haskell/cabal/issues/3512#issuecomment-231604356
Trac metadata
Trac field | Value |
---|---|
Version | 8.0.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | libraries/base |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |