Fix "warn-unused-do-bind" warnings where we really do want to ignore the result

[ghc-base.git] / Foreign / Marshal / Pool.hs

diff --git a/Foreign/Marshal/Pool.hs b/Foreign/Marshal/Pool.hs
index 9c07558..47e4f86 100644 (file)
--- a/Foreign/Marshal/Pool.hs
+++ b/Foreign/Marshal/Pool.hs
@@ -143,7 +143,7 @@ pooledRealloc = pr undefined
 pooledReallocBytes :: Pool -> Ptr a -> Int -> IO (Ptr a)
 pooledReallocBytes (Pool pool) ptr size = do
    let cPtr = castPtr ptr
-   throwIf (not . (cPtr `elem`)) (\_ -> "pointer not in pool") (readIORef pool)
+   _ <- throwIf (not . (cPtr `elem`)) (\_ -> "pointer not in pool") (readIORef pool)
    newPtr <- reallocBytes cPtr size
    ptrs <- readIORef pool
    writeIORef pool (newPtr : delete cPtr ptrs)