#2228: runghc screws up terminal buffering mode and doesn't reset it
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Reporter: guest | Owner: igloo
Type: bug | Status: new
Priority: normal | Milestone: 6.8.3
Component: GHCi | Version: 6.8.2
Severity: major | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: Multiple
Os: Linux |
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Comment (by simonmar):
Yes, zsh saves the terminal settings and restores them after every
program; use `ttyctl -u` to stop it doing that.
There are a couple of problems here.
* GHCi is setting stdin/stdout to `NoBuffering` in runghc, and it
shouldn't be.
I think this is because runghc is executing multiple commands, and GHCi
is
resetting the buffering between the commands.
* GHCi is exiting via `topHandlerFastExit` which omits all of the
shutdown cleanup
that the RTS normally does, in particular the restoring of the terminal
state
(`RtsStartup.c:hs_exit_()`).
igloo: I can probably fix this, but I'm not completely sure about the
second issue - I think it was you that introduced the `topHandlerFastExit`
thing. It doesn't look quite right to me.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2228#comment:6>
GHC <http://www.haskell.org/ghc/>
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