Move tests from tests/ghc-regress/* to just tests/*

1 files changed, 19 insertions, 0 deletions

diff --git a/testsuite/tests/ffi/should_run/1679.hs b/testsuite/tests/ffi/should_run/1679.hs
new file mode 100644
index 0000000000..15f8630004
--- /dev/null
+++ b/testsuite/tests/ffi/should_run/1679.hs
@@ -0,0 +1,19 @@
+{-# LANGUAGE ForeignFunctionInterface #-}
+import System.Mem
+import Foreign
+import Control.Exception
+
+-- Test for #1679.  If there's a GC during a foreign call, the
+-- interpreter could sometimes crash, because it was using the old
+-- pointer to the byte code instructions, which has now moved.  The
+-- tricky bit is allocating enough so that the old instructions are
+-- overwritten, hence performGC followed by sum [1..100000].
+
+foreign import ccall "wrapper" mkF :: IO () -> IO (FunPtr (IO ()))
+foreign import ccall "dynamic" call_F :: FunPtr (IO ()) -> IO ()
+
+main = do
+  fun <- mkF (do performGC
+                 print (sum [1..100000]))
+  call_F fun
+  putStrLn "ok"