From c9ad23b0b5be6d0767e490cc55b00c169a5ec226 Mon Sep 17 00:00:00 2001 From: Simon Marlow Date: Tue, 28 Apr 2009 08:53:45 +0000 Subject: [PATCH] improve the finalizer callback error message --- rts/Schedule.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/rts/Schedule.c b/rts/Schedule.c index e82115b..9792302 100644 --- a/rts/Schedule.c +++ b/rts/Schedule.c @@ -285,7 +285,9 @@ schedule (Capability *initialCapability, Task *task) if (running_finalizers) { errorBelch("error: a C finalizer called back into Haskell.\n" - " use Foreign.Concurrent.newForeignPtr for Haskell finalizers."); + " This was previously allowed, but is disallowed in GHC 6.10.2 and later.\n" + " To create finalizers that may call back into Haskll, use\n" + " Foreign.Concurrent.newForeignPtr instead of Foreign.newForeignPtr."); stg_exit(EXIT_FAILURE); } -- 1.7.10.4