crash in gc with > 2 generations

[dynamic-wind]

using ghci from binary distribution built w/mingw command line arguments +RTS -G3 enter:

let n=[1..10000000] last n

sometimes hereafter ghc crashes in various fashions, e.g. "evacuate: unknown closure type: 0" reproducing the crash may require several attempts seems like only 2 spaced gc works ok?

[igloo]

Thanks for the report. The stable branch crashes even earlier than that for me, on amd64/Linux:

ghc/stage2-inplace/ghc --interactive +RTS -G3
GHCi, version 6.10.3.20090702: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer ... linking ... done.
Loading package base ... linking ... done.
zsh: segmentation fault  ghc/6.10-branch/ghc/ghc/stage2-inplace/ghc --interactive +RTS -G3

I can't reproduce the problem with the HEAD.

[simonmar]

I'm validating the fix for this.

[simonmar]

Fixed:

Mon Jul  6 04:22:27 PDT 2009  Simon Marlow <marlowsd@gmail.com>
  * Fix generational GC bug (#3348)

[igloo]

Merged