[project @ 1999-07-08 13:51:17 by sof]

foreign export regression test

ghc/tests/programs/fexport/For.hs

+module For where
+
+{-
+import IOExts
+import Addr
+--y = putChar
+
+count :: IORef Int -> IO Int
+count ref = do
+  x <- readIORef ref
+  writeIORef ref (x+1)
+  return x
+
+createCounter :: IO Addr
+createCounter = do
+  ref <- newIORef 0
+  mkCounter (count ref)
+
+foreign import "sin" msin :: Double -> IO Double
+-}
+
+foreign export "putChar" putChar :: Char -> IO ()
+
+--foreign export "createCounter" createCounter :: IO Addr
+--foreign export dynamic mkCounter :: (IO Int) -> IO Addr

ghc/tests/programs/fexport/Makefile

+TOP = ..
+include $(TOP)/mk/boilerplate.mk
+
+SRC_HC_OPTS += -fglasgow-exts -no-hs-main
+
+CC = $(HC)
+
+all :: runtest
+
+include $(TOP)/mk/target.mk

ghc/tests/programs/fexport/fexport.stdout

+Hello, world

ghc/tests/programs/fexport/test.c

+#include "For_stub.h"
+
+int
+main(int argc, char *argv[])
+{
+  int i;
+  char msg[] = "Hello, world\n";
+
+  startupHaskell(argc,argv);
+
+  for (i=0; i < sizeof(msg) - 1; i++) {
+     putChar(msg[i]);
+  }
+  shutdownHaskell();
+}