Support for -fwarn-unused-do-bind and -fwarn-wrong-do-bind, as per #3263

[ghc-hetmet.git] / compiler / main / SysTools.lhs

diff --git a/compiler/main/SysTools.lhs b/compiler/main/SysTools.lhs
index 357616b..26c85bd 100644 (file)
--- a/compiler/main/SysTools.lhs
+++ b/compiler/main/SysTools.lhs
@@ -608,8 +608,8 @@ builderMainLoop dflags filter_fn pgm real_args mb_env = do
   -- and run a loop piping the output from the compiler to the log_action in DynFlags
   hSetBuffering hStdOut LineBuffering
   hSetBuffering hStdErr LineBuffering
-  forkIO (readerProc chan hStdOut filter_fn)
-  forkIO (readerProc chan hStdErr filter_fn)
+  _ <- forkIO (readerProc chan hStdOut filter_fn)
+  _ <- forkIO (readerProc chan hStdErr filter_fn)
   -- we don't want to finish until 2 streams have been completed
   -- (stdout and stderr)
   -- nor until 1 exit code has been retrieved.