[Hugs]Unexpected signal from FFI

[Marco Vezzoli]

(sorry for the cross-posting with hugs-user -- I 've found this ml
later)
Hi,
I'm learning how to use ffi with hugs (latest version, on Solaris 8, gcc
3.0.2). 
I can compile this simple example without errors

----Test.hs-----------------------
module Test where
import Foreign.C.String
import Foreign.C.Types

foreign import ccall "test.h incr" incr :: Int->IO Int

foreign import ccall "test.h times" times :: CChar->Int->IO CString

testTimes = do{j<-times (castCharToCChar 'a') 3;c <- peekCString j
;putStr c}

testIncr = do{j<-incr 1;putStr $show j}
----Test.hs-----------------------
----test.c-----------------------
#include <stdlib.h>
#include "test.h"
int incr(int i){
        return i+1;
}
char* times(char c,int i){
        printf("times running %d\n",i);
        char* ret;
        char* itr;
        ret=(char*)malloc(i*sizeof(char)+1);
        for (itr=ret;itr<ret+i;itr++){
                *itr=c;
        }
        *itr=0;
        return ret;
}
----test.c-----------------------
----test.h-----------------------
int incr(int);
char* times(char,int);
----test.h-----------------------
the command I use is 
  ffihugs -P{Hugs}/libraries/:{Hugs}/oldlib +G +L"test.c" Test.hs 
and generates Test.c and Test.so
Hugs loads correctly the module but fails one of the tests:

[vezzoli at web:883] ffi ->hugs -P{Hugs}/libraries/:{Hugs}/oldlib Test.hs 
__   __ __  __  ____   ___     
_________________________________________
||   || ||  || ||  || ||__      Hugs 98: Based on the Haskell 98
standard
||___|| ||__|| ||__||  __||     Copyright (c) 1994-2002
||---||         ___||           World Wide Web: http://haskell.org/hugs
||   ||                         Report bugs to: hugs-bugs at haskell.org
||   || Version: November 2002 
_________________________________________

Haskell 98 mode: Restart with command line option -98 to enable
extensions
[loading prints removed]
Test.hs
Type :? for help
Test> testIncr
2
Test> testTimes

Unexpected signal
[vezzoli at web:884] ffi ->

The C code compiles and works correctly with a stand-alone test.
Thank you in advance for any help.
        Marco
-- 
Marco Vezzoli      tel. +39 039 603 6852
STMicroelectronics fax. +39 039 603 5055
-- 
Marco Vezzoli	   tel. +39 039 603 6852
STMicroelectronics fax. +39 039 603 5055