From: Simon Marlow <marlowsd@gmail.com>
Date: Tue, 29 Jul 2008 15:05:18 +0000 (+0000)
Subject: FIX #2327: a fault in the thunk-selector machinery (again)
X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=commitdiff_plain;h=890f5a1a6e70ff4021cd58463f5152f10c47b395;hp=890f5a1a6e70ff4021cd58463f5152f10c47b395

FIX #2327: a fault in the thunk-selector machinery (again)
This program contains an expression of the form

   let x = snd (_, snd (_, snd (_, x)))

(probably not explicitly, but that's what appears in the heap at
runtime).  Obviously the program should deadlock if it ever enters
this thing, but apparently the test program in #2327 never does.

The GC tries to evaluate the snd closures, and gets confused due to
the loop.  In particular the earlier fix for #1038 was to blame.
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