GHCi (7.4.0.20111219) sometimes segfaults when reading .ghci

[konn]

If ~/.ghci is set to load some module when startup, GHCi sometimes raises SEGV. "Sometimes" means that ghci sometimes launched successfully and sometimes not. So please try it more than three times.

Below is the minimal .ghci file to reproduce the problem:

:m Prelude

I use virthualenv package to use GHC-7.4.1RC. I installed it as below:

$ wget http://www.haskell.org/ghc/dist/7.4.1-rc1/ghc-7.4.0.20111219-x86_64-apple-darwin.tar.bz2
$ virthualenv --ghc=/***/***/install/ghc-7.4.0.20111219-x86_64-apple-darwin.tar.bz2

Used virthualenv package is built on GHC 7.0.4.

[igloo]

I can't reproduce this on amd64/Linux validate builds. I'll try on the OS X 64 RC.

[igloo]

May be unrelated to .ghci; see also this thread:  http://www.haskell.org/pipermail/glasgow-haskell-users/2011-December/021370.html

[igloo]

I can't reproduce it by installing ghc-7.4.0.20111219-x86_64-apple-darwin.tar.bz2 either. Tried both with and without .ghci.

[igloo]

I can't reproduce it by installing with virthualenv either.

[simonmar]

I managed to repro it here with the RC1 tarball. Looking into it further...

[igloo]

The plan is to just document the installer as requiring OS X >= 10.7 and XCode >= 4.1.

Ideally we'd also have the installer warn if it finds it is being used on an older version.

[igloo]

pumpkin, here's another installer enhancement that would be useful: The ability to make the installer warn if you have XCode < some_version, or OS X < some_version. Thanks!