EVACUATED object entered! (when doing FFI)

[Francis Girard]

Good morning,

I wrote a very small program, and it executed ok.
I wanted to export a function in "C", and therefore wrote a "C" wrapper 
function over it to invoke peekCString and peekArray on the input; newCString 
and newArray on the output.

I then did a small "C" driver program. Everything compiled and linked 
correctly.

But at execution the program prints :

EVACUATED object entered!

as soon as "startupHaskell" is invoked (i.e. even before I call my foreign 
exported function !)

What is the meaning of this message ?

Thank you

Francis Girard
Le Conquet
France