Add string parameter to WASM_UNREACHABLE (#2499)

This works more like llvm's unreachable handler in that is preserves
information even in release builds.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/shell-interface.h b/src/shell-interface.h
index e73ce4c48..63cbd9807 100644
--- a/src/shell-interface.h
+++ b/src/shell-interface.h
@@ -120,7 +120,7 @@ struct ShellExternalInterface : ModuleInstance::ExternalInterface {
             assert(false && "exnref not implemented yet");
           case none:
           case unreachable:
-            WASM_UNREACHABLE();
+            WASM_UNREACHABLE("unexpected type");
         }
       }
     });