1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/wasm/WasmException.h b/js/src/wasm/WasmException.h
new file mode 100644
index 0000000000..d9cfcfb8b0
--- /dev/null
+++ b/js/src/wasm/WasmException.h
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ *
+ * Copyright 2021 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef wasm_exception_h
+#define wasm_exception_h
+
+namespace js {
+namespace wasm {
+
+static const uint32_t CatchAllIndex = UINT32_MAX;
+static_assert(CatchAllIndex > MaxTags);
+
+}  // namespace wasm
+}  // namespace js
+
+#endif  // wasm_exception_h