Change sigTTOU/TTIN to IGNORE by default

[Volker Stolz]

On Thu, Jan 11, 2001 at 02:22:59AM -0800, Simon Marlow wrote:
> > My local copy of ghc-4.08.1 likes to stop a program when running it
> > with "&" (nohup) by default, I have to call
> >   Posix.installHandler Posix.sigTTOU Posix.Ignore Nothing
> 
> I couldn't reproduce this problem: just ran "hello world" in the
> background, it printed the message and exited.  Could you give more
> details?

In fact I can produce a simple example, either. So just the facts:

perftest at monster [11:46:35]> ./Reader &
[2] 86029
perftest at monster [11:46:40]> jobs
[2]+  Stopped                 ./Reader

Sourcecode-snippet of Reader:

> main = do
>   -- Posix.installHandler Posix.sigTTOU Posix.Ignore Nothing
>   hSetBuffering stdout NoBuffering
>   Distributed.start (do
>     register "Reader"
>     ....

and the relevant fragment of Distributed.start up to the first few
putStrs:

> start :: DIO msg () -> String -> IO ()
> start f node = do
>   putStr "DHS: Starting"
>   putStr " Arguments"
>   args <- DHSOptions.getArgs
>   ...

Inserting a linefeed or using putStrLn don´t cause any change.

GHC was last built on Nov 15 18:25. I remember reporting a signal-handler
related bug a couple of weeks ago which got fixed, but maybe I haven´t
fixed my ghc and this is because of the same reason...
-- 
\usepackage[latin1]{inputenc}!
Volker Stolz * stolz at i2.informatik.rwth-aachen.de * PGP + S/MIME