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improve the finalizer callback error message
[ghc-hetmet.git]
/
rts
/
Schedule.c
diff --git
a/rts/Schedule.c
b/rts/Schedule.c
index
e82115b
..
9792302
100644
(file)
--- 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"
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);
}
stg_exit(EXIT_FAILURE);
}