#1905: runProcess: misbehaving exception on nonexistent working directory
-------------------------------+--------------------------------------------
Reporter: wferi | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: libraries/process | Version: 6.6.1
Severity: normal | Keywords: runProcess, exception,
segfault
Testcase: | Architecture: x86
Os: Linux |
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Compiling and running the attached Fork.hs gives unexpected results:
* The first line is mostly OK: the working directory does not exist.
(Unfortunately it's not clear from the message ''what'' does not
exist...)
* The ensuing `ps` output is also OK, but already shows strange
process states and hierarchy:
* Why is the parent `Fork` in D state?
* Why is `ps` a grandchild of it, instead of being another child of the
parent `Fork`?
* The last line is ''Segmentation fault'', which is '''bad'''.
{{{
$ ./Fork
sleep: runProcess: does not exist (No such file or directory)
PID TTY STAT TIME COMMAND
3504 ? Ss 0:00 urxvt
3505 ? S 0:00 \_ urxvt
3506 pts/1 Ss 0:00 \_ bash
5571 pts/1 D+ 0:00 \_ ./Fork
5572 pts/1 S+ 0:00 \_ ./Fork
5573 pts/1 R+ 0:00 \_ ps xf
Segmentation fault
}}}
(I elided the irrelevant part of the `ps` output.)
Somebody on IRC got ''Bus error'' instead.
Others, testing under GHC 6.8, did not even get an exception.
I have got the impression that exception handling inside or around
`runProcess`
is broken.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1905>
GHC <http://www.haskell.org/ghc/>
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