diff options
| -rw-r--r-- | compiler/GHC/Utils/Panic.hs | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/compiler/GHC/Utils/Panic.hs b/compiler/GHC/Utils/Panic.hs index 94d9e7cefd..0a95ea4d1e 100644 --- a/compiler/GHC/Utils/Panic.hs +++ b/compiler/GHC/Utils/Panic.hs @@ -7,6 +7,8 @@ {-# LANGUAGE CPP #-} {-# LANGUAGE ScopedTypeVariables, LambdaCase #-} +#include <ghcautoconf.h> + -- | Defines basic functions for printing error messages. -- -- It's hard to put these functions anywhere else without causing @@ -236,6 +238,11 @@ signalHandlersRefCount = unsafePerformIO $ newMVar (0,Nothing) -- | Temporarily install standard signal handlers for catching ^C, which just -- throw an exception in the current thread. withSignalHandlers :: ExceptionMonad m => m a -> m a +#if !defined(HAVE_SIGNAL_H) +-- No signal functionality exist on the host platform (e.g. on +-- wasm32-wasi), so don't attempt to set up signal handlers +withSignalHandlers = id +#else withSignalHandlers act = do main_thread <- liftIO myThreadId wtid <- liftIO (mkWeakThreadId main_thread) @@ -295,6 +302,7 @@ withSignalHandlers act = do mayInstallHandlers act `MC.finally` mayUninstallHandlers +#endif callStackDoc :: HasCallStack => SDoc callStackDoc = prettyCallStackDoc callStack |