id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
1905	runProcess: misbehaving exception on nonexistent working directory	wferi	simonmar	"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."	bug	closed	normal	6.8.2	libraries/process	6.6.1	duplicate	runProcess, exception, segfault		Linux	x86		Unknown